A SWIMMING TEST FOR PREDICTION OF MAXIMUM OXYGEN CONSUMPTION by David Mario Santeusanio A Thesis Submitted to the Faculty o f the DEPARTMENT OF PHYSICAL EDUCATION In P a r t i a l F u l f i l l m e n t o f the Requirements For the Degree o f Master of Science In the Graduate College THE UNIVERSITY OF ARIZONA 19 8 0 STATEMENT BY AUTHOR This thesis has been submitted in p a r t i a l f u l f i l l m e n t of re quirements f o r an advanced degree a t The U n iv e r s it y o f Arizona and is deposited in the U n iv e r s it y Li br ar y to be made a v a i l a b l e to borrowers under rules of the L i b r a r y . B r i e f quotations from t h is th esi s ar e a llo w ab le without special permission, provided t h a t accurate acknowledgment of source is made. Requests f o r permission f o r extended quotation from or reproduction o f t h is manuscript in whole or in pa rt may be granted by the head of the major department or the Dean of the Graduate College when in his judg ment the proposed use of the mat er ial is in the i n t e r e s t s o f sch olar ship. In a l l ot her instances, however, permission must be obtained from the author. SIGNED APPROVAL BY THESIS DIRECTOR This thesis has been approved on the date shown below: "3 JACK H. WILMORE ProfeA&or o f Physical Education Date DEDICATION This thesis is dedicated to the physical educators who c o n t i n u a l l y s t r i v e to expand the boundaries of our f i e l d arid education. in research With the Lord's help may t h i s the si s serve as a constant reminder of my commitment to excellence in the f i e l d . ACKNOWLEDGMENTS It Is w ith my si nce re a p p re c ia ti o n th at I extend thanks to Dr. Jack H. Wilmore f o r his help in advising and d i r e c t i n g the w r i t i n g of t h is t h e s i s . His continuous encouragement and expert knowledge in t h i s area of i n v e s t i g a t i o n was a tremendous advantage. Because of his loyal endeavors toward excellen ce and his impeccable honesty I hold him in the highest regard as a professional and a man. I would l i k e to thank my committee members, Dr. Margaret B. Anderson and Dr. Fred B. Roby, f o r t h e i r v al u ab le time and a d d i t i o n a l assis ta nc e. A sincere thanks is extended to my f e l l o w graduate students f o r t h e i r help in the c o l l e c t i o n o f the data. Also, a special thanks Is extended to P r i s c i l l a G i l l i a m without whose i n s p i r a t i o n and support the w r i t i n g of t h is thesis might have lagged on i n d e f i n i t e l y . And f i n a l l y , I wish to acknowledge t h a t wit hou t the t a l e n t s given me by the Lord t h i s endeavor would never have reached i t s completion. TABLE OF CONTENTS Page LIST OF TABLES .......................... LIST OF ILLUSTRATIONS . . ABSTRACT vi . ...vi i .......................... vi i i ............................ i CHAPTER 1 INTRODUCTION . . . Statement o f the Purpose . . . . . . . 2 , REVIEW OF LITERATURE .......................................... Running/Walking Tests ...................................................... Cycling Tests ................................................. Bench Stepping T e s t s ............................... 3 k .............................. EXPERIMENTAL D E S I G N ............................. . . . . . .. . . Subjects . . . . . .................. Determination o f VO2 . ..................................... 800 Meter S w i m ................................................................................ S t a t i s t i c a l Analysis . . . ............................................... 5 5 8 9 10 10 13 18 19 h RESULTS .................................................................................. 20 5 DISCUSSION..................................... .... ................................................................ 28 6 SUMMARY 35 . . . . . . . . . . . . . . .................................................................................. APPENDIX A: SUBJECT CONSENTFORM APPENDIX B: METHOD USED TO CALCULATE STANDARD LOAD PROGRESSIONS FOR ESTIMATED MAXIMUM LOADS = 4. 0 0 KG ................................................. 39 APPENDIX C: INDIVIDUAL SUBJECTCHARACTERISTICS . . . . . . 40 APPENDIX D: PREDICTED VO2 MAX CALCULATED FROM THE REGRES SION EQUATIONANDCONVERTED TO ML/KG X MIN. . . 44 LIST OF REFERENCES . . . . ......................... 37 ....................................................... v 46 LIST OF TABLES T a b le I. II. III. IV. Page Mean Subject Data f o r According to T r a i n i n g Total Group andf o r Each Group Level...................................................................... 11 C o r r e l a t io n M a t r i x (N = 50) 21 ..................................... Commonality Analysis o f P r e d ic t o r Vari abl es w ith VO- max in L i t e r s / M i n ................................................................................................... V a l i d i t y o f Fi e l d Tests f o r Pr e d ic t i n g Vo^ Max. . . . . . . vi 26 33 LIST OF ILLUSTRATIONS F ig u re Page 1. Swimming Ergometer, Side View . . . . . . . . . 2. Swimming Ergometer, Overhead View ....................... 15 3. Breathing Apparatus .......................................................... 17 4. S c a tt e r Diagram o f Performance Time and VO. max in ml / kg x mi n ............................... 22 S c a t t e r Diagram o f Performance Time and VO max in 1 i te rs/mi n . . . . . . . .................................... .... . . . . . . 23 5. vi i ........................ 14 ABSTRACT The p r e d i c t a b i l i t y of maximum oxygen uptake (VO2 max) from performance time in an a l l - o u t 800 meter f r o n t crawl swim and selected physical c h a r a c t e r i s t i c s was evaluated in 50 males, 15-25 years o f age. VO2 max was determined v i a the open-ci rcui t method during te thered swimming and compared w ith age, body weight, t r a i n i n g l e v e l , and performance time in the 800 meter swim. Regression ana lys is revealed t h a t body weight and performance time were the most s i g n i f i e cant p r ed ic to r s o f VO2 max. A m u l t i p l e regression equation was con str uct ed using these two v a r i a b l e s to p r e d i c t \10^ max in 1 i t e r s / m i n . The c o r r e l a t i o n c o e f f i c i e n t was R = 0. 84 (p < 0 . 0 0 1 ) . R e lia b ilitie s f o r te s t s of VO2 max and 800 meter swim times were r = 0.9 6 and r = 0.99, respectively. The high r e l i a b i l i t y of the f i e l d t e s t and the strong r e l a t i o n s h i p between VO2 max w ith body weight and performance. time in dicates t h a t the 800 meter swim t e s t is a good p r e d i c t o r of VO2 max. CHAPTER 1 INTRODUCTION Swimming Is recognized as one of America's most popular a c t i v e sports. In a study conducted by P e r r i e r (1 97 9 ), swimming was found to be the second l a r g e s t p a r t i c i p a t o r y sport in the United St a t e s , second only to walking. Twenty-six m i l l i o n people are involved in some form of swimming a c t i v i t y , competition. of a l l including r e c r e a t i o n , physical con dit io nin g and Swimming is one of the best physical a c t i v i t i e s f o r people ages, as well as f o r those who have various physical d i s a b i l i t i e s or i n c a p a c it a t in g i n j u r i e s . Vigorous, rhythmic a c t i v i t y performed in the water has been shown to r e s u l t in s i g n i f i c a n t a l t e r a t i o n s b ility , in f l e x i strength and c a r d i o r e s p i r a t o r y endurance (Andrew e t a l . 1972; Clarke 1973; Stewart and Gut In 1976). Improving the general he al th and f i t n e s s o f the p a r t i c i p a n t one of the most important b e n e fi t s derived from swimming. lar, is In p a r t i c u swimming improves c a r d i o r e s p i r a t o r y endurance c a p a c i t y , the most important hea lth r e l a t e d component o f physical f i t n e s s and Henschel Newton 1963). 1955; Astrand 1956; M i t c h e l l , ( T a y l o r , Buskirk, Sproule, and Chapman 1958; C a r d io r e s p ir a t o r y endurance capacity is best represented p h y s i o l o g i c a l l y by the i n d i v i d u a l ' s maximal oxygen uptake (VO^ max) (Astrand 1956; M it c h e l l e t a l . 1958; Newton 1963; Astrand 1973) • max has t r a d i t i o n a l l y been used to represent the i n d i v i d u a l ' s VC^ level of f i t n e s s as well as to q u a n ti f y changes in f i t n e s s w it h endurance co n d it io n in g . The a c t u a l measurement o f oxygen consumption t o de t e r m in e VO^ max, a v e r y c o s t l y and t im e consuming l a b o r a t o r y t e c h n i q u e , im p ra ctica l is v e r y f o r use by coaches and t ea c he r s on a r e g u l a r b a s i s . A l t e r n a t i v e l y , methods, have been de vi se d t o p r e d i c t o r e s t i m a t e max by e v a l u a t i n g performance on a p a r t i c u l a r work t a s k w i t h e s t a b l i s h e d norms (Brouha 1943; As t r a n d and Rhyming 1954; Ba lke 1963; Cooper 1968). These methods have proven val uab le f o r f i e l d testing where many in d iv id u a ls are to be tested in a short period of time. It is the major purpose o f the present study to devise such a f i e l d t e s t t h a t uses swimming as the work task. In the la bo ra to ry determination of VO^ max, the r e s u l t s of a number of i n v e s t i g a t io n s have indic ate d t h a t the r e s u l t i n g value is hi gh ly dependent on the mode of t e s t i n g (Carey, Stensland, and Ha rt l e y 1974; Cunningham, Goode, and C r i t z 1975; Str^mme, I n g j e r , and Meen 1977; W?1more 1979; Secher and Oddershede 1975). Research in t h i s area has shown t h a t the various ph ys iolog ica l are s p e c i f i c to the type o f a c t i v i t y , swimming. i.e ., responses to exercise running, c y c l i n g , and I f v a l i d and useful data are to be obtained when t e s t i n g , a t h l e t e s must be tested in a way t h a t most clo se ly resembles t h e i r performance during actual competition. Distance runners do not achieve maximal endurance performance when tested on a b i c y c l e ergometer when compared to t h e i r maximal performance on a motorized treadm ill. In swimming, swimmers should be tested in the water under 3 conditions most s i m i l a r to actual competition. In t h i s study tethered swimming was used to simulate the most optimal conditions f o r t e s t in g VO^ max of swimmers. A recent study by Bonen et a l . th at VO^ max during f r e e , (1980) revealed tethered and flume swimming was not s i g n i ficantly differen t. The l i t e r a t u r e also provides evidence to support the theory that a s p e c if ic it y of tra in in g results in phy sio logical adaptations in the body, which are s p e c i f i c to the type o f t r a i n i n g each p a r t i c u l a r a c t i v i t y et a l . (Hartung 1973; Pechar et a l . 1975; Wilmore 1979). the physiological a l t e r a t i o n s involved in 1974; Magel T h e re fo r e, when eva lu a tin g and monitoring in a t r a i n i n g program the mode of t e s t ing used should c l o s e l y resemble the t r a i n i n g a c t i v i t y i f the appro p r i a t e responses are to be e l i c i t e d . With t h is participants in mind, when p r e d i c t i n g the VO^ max of a t h l e t e s or in selected sports or a c t i v i t i e s , the mode of t e s t in g should be used which is most s p e c i f i c to the p a r t i c u l a r type of a c t i v i t y used in t r a i n i n g f o r t h a t sport or a c t i v i t y . For example, a running t e s t should be used to p r e d i c t VO^ max in runners, a b i c y c l e t e s t to p r e d i c t VOg max in c y c l i s t s , and a swimming t e s t to p r e d i c t VO^ max in swimmers. This would maximize the accuracy of p r e d i c t io n s f o r each i ndi vi du al in t h e i r p a r t i c u l a r a c t i v i t y . There have been methods of f i e l d t e s t i n g est ab li sh ed which p r e d i c t VO^ max by using running, c yc lin g and bench stepping as the mode of ex e rc is e (Cooper 1968; Astrand and Rhyming 1954; Brouha 1943). L i t t l e or no research, however, has been reported which has est abl is hed a method of p r e d i c t in g the VO^ max of swimmers during swimming. Obviously, since ph ys iolog ica l demands are s p e c i f i c to the task, it would be highl y d e s ir a b l e to devise a method of t e s t i n g the ca r d i o r e s p i r a t o r y endurance cap acity o f swimmers which is more s p e c i f i c to the act io n o f swimming. Statement of the Purpose The general purpose of t h i s study was to develop a f i e l d t e s t f o r es ti ma tin g c a r d i o r e s p i r a t o r y endurance ca p a c i ty , i.e ., maximal oxygen uptake (VOg max), f o r swimmers t h a t could be used by coaches, i n s t r u c to r s and others w ith an i n t e r e s t in swimming. Specifically, t h i s study was designed to determine the r e l a t i o n s h i p between VO^ max, as assessed during te th ere d swimming, and maximum performance in an a l l - o u t 800 meter swim f o r time. CHAPTER 2 REVIEW OF LITERATURE Past research has est abl ish ed the v a l i d i t y o f u t i l i z i n g f i e l d tes ts as p r ed ic to r s o f VO^ max. Most of these studies have been conducted w ith running, s t a t i o n a r y cyc lin g and bench stepping as the mode of ex e r ci s e. A review of past research ind ica tes t h a t no f i e l d has been devised which uses swimming as the mode o f e x e r c is e . Run nin g/Wa lkin g Tests Balke (1963) and Cooper (1968) in itia lly developed w a l k - r u n t e s t s t o e s t i m a t e VO^ max on th e b a s i s o f t h e d i s t a n c e covered in a g i v e n t im e p e r i o d , o r the t im e r e q u i r e d t o run a g i v e n d i s t a n c e . Cooper (19 68 ), using a m o d i fi c a t i o n o f the Balke f i e l d (Balke 1963), developed the 12-minute walk-run t e s t . test for fitness In studying 115 A i r Force o f f i c e r s , age 17-52 y e a r s , he reported a c o r r e l a t i o n of r = 0.897 between the distance covered in 12 minutes and VOg max. Ri b i s l and Kachadorian (1969) reported a c o r r e l a t i o n of r = - 0 . 7 9 between VO^ max and 1- m ile run time, and an r = - 0 . 8 5 between V0^ max and 2 - m i l e run time in co ll ege -a ge males. Katch and Henry (1972) conducted a study which d e a l t w ith the r e l a t i o n s h i p between running performance and VO^ max in col le ge -a ge males. In t h is study they reported a c o r r e l a t i o n of r = 0.5 4 in the r e l a t i o n s h i p between 12-minute run performance and VO^ max. 5 Using the same sub jec ts. an r = - 0 . 5 5 c o r r e l a t i o n was found in comparing 2- m il e time and VO^ max. Gregory (19 70 ), age males, in comparing the 12-minute run and VO^ max of c o l l e g e - reported an r = 0 . 6 6 . Custer and Chaloupka (1977) determined the r e l a t i o n s h i p between predicted V0^ max, as determined by the Astrand b i c y c l e ergometer t e s t (Astrand and Rhyming 1954) and performance in the 6, 9, and 12-minute runs f o r co l l e g e women between the ages of 18 and 21 years (N = 4 0 ) . C o rre la tio ns o f r = 0 . 4 5 , r = 0 .3 7 and r = 0.49 were found f o r the 6, 9 and 12-minute runs, r e s p e c t i v e l y . The use of such a design, however, jeopard ize s the accuracy o f any c o r r e l a t i o n when a r e l a t i o n s h i p is est abl is hed using one predict ed v a r i a b l e aga inst a second predicted variable. D o o l i t t l e and Bigbee ( l 968) administered the 12-minute walkrun t e s t to 153 ninth grade males. Using the rank order c o r r e l a t i o n technique, VO^ max and 12-minute run performance e x h ib i t e d a c o r r e l a t io n of r = 0. 90 using only nine of these boys. The t e s t - r e t e s t c o e f f i c i e n t of r e l i a b i l i t y f o r the 12-minute walk-run t e s t was r = 0. 9 7 6 . Maksud and Coutts (1971) (N = 153) reported a c o r r e l a t i o n o f r = 0. 65 between 12-minute walk-run performance and VO^ max using 17 male su b jec ts, age 11 to 14 years. R e l i a b i l i t y , es t a b li s h e d on a population of 80 male su b jec ts, was r = 0 . 9 2 . Jackson and Coleman (1976) i nv est ig at ed the v a l i d i t y of distance run te s t s to p r e d i c t c a r d i o r e s p i r a t o r y endurance cap ac ity f o r elemen t a r y school c h i l d r e n , f o u r th through s i x t h grade. A f a c t o r analysis e st abl is hed the construct v a l i d i t y of the distance runs and gave credence to the 9 and 12-minute runs. VO^ max and the 9-minute run c o r r e l a t e d r = 0. 8 2 f o r boys (N = 2 2 ) , and r = 0.71 f o r g i r l s (N = 2 5 ) . VO^ max and the 12-minute run als o c o r r e l a t e d r = 0. 82 and r = 0 . 7 1 , r e s p e c t i v e l y , f o r boys and g i r l s . Krahenbuhl e t a l . (1 9 7 8 ), studying 69 males and 48 females, f i r s t through t h i r d grades, in reported m u l t i p l e c o r r e l a t i o n s whose c o e f f i c i e n t s f o r a 1600 meter run were s l i g h t l y higher than r = - 0 . 6 0 when r e l a t e d to V0^ max expressed as a f unc tio n of body weight. The t e s t - r e t e s t r e l i a b i l i t y c o e f f i c i e n t s ranged from a low of r = 0.824 f o r f i r s t grade females to a high of r = 0.918 f o r t h i r d grade males. Several i n v e s t i g a t o r s have examined the v a l i d i t y of the 600 yard walk-run t e s t as an index o f c a r d i o r e s p i r a t o r y endurance cap aci ty and reported r a t h e r low c o r r e l a t i o n s w it h VOg max. reported a v a l i d i t y Falls, o f r = - 0 . 5 3 f o r 76 males, Is m a il , and McLeod (1966) Olree e t a l . 16-17 years o f age. reported a v a l i d i t y o f r = - 0 . 6 4 in 87 a d u l t s , 23 to 58 years of age. D o o l i t t l e and Bigbee (1968) reported a v a l i d i t y o f r = - 0 . 6 2 using only 9, nin th grade boys. and Wilmore (1975) Vodak i nv es ti ga te d the v a l i d i t y , of the 600 yard walk-run t e s t and the 6-minute walk-run t e s t in 69 young males, 9 to 12 years o f age, and found c o r r e l a t i o n s of r = - 0 . 5 0 and r = 0 . 5 0 , It (1965) is evident t h a t f i e l d respectively. te s t s of running distance g r e a t e r than 1 m ile (1600 meters) or o f a durati on longer than 9 minutes have been success ful with populations ranging from o l d e r adults to younger c h i l d r e n . 8 Cycli ng Tests Attempts a t p r e d i c t in g VO^ max from te s t s conducted with s t a t i o n a r y cyc ling have also been reported in the l i t e r a t u r e . Astrand and Rhyming (1954) devised a t e s t of submaximal e f f o r t , which included stationary cycling, to p r e d i c t maximal endurance c a p a c i ty . They reported t h a t during the higher workloads of 1200 kpm f o r men and 900 kpm f o r women, the percent e r r o r of VO^ max p r e d i c t i o n was only 6.7% f o r men and 9.4% f o r women. U n fo r t u n a t e l y , c o e f f i c i e n t s of v a l i d i t y were not recorded in the o r i g i n a l DeVries and Klafs (1965) study. included the Astrand-Rhyming t e s t in t h e i r ev a lu a ti o n o f several submaxima 1 te s t s which are commonly used f o r p r e d i c t io n of maximal physical working c a p a c i ty . They reported a c o r r e l a t i o n c o e f f i c i e n t of r = 0.736 between actual and predicted V02 max in 16 c o l l e g e age men using a b i c y c l e ergometer. et a l . (1965) • Glassford reported an r = 0. 77 between actual VO2 max and predicted VO2 max expressed in ml/kg x min from the Astrand-Rhyming bike t e s t 24 males, ages 17-33 years. in In a study conducted on 24 males, ages 16-28 yea rs , Wojtczak-Jarosowa and Banaszkiewicz (1974) reported th a t there was no s i g n i f i c a n t d i f f e r e n c e between actual V02 max and VO2 max predicted from the Astrand-Rhymi ng Tes t. DeVries and Klafs (1965) also examined the r e l a t i o n s h i p of actual VO2 max and VO2 max pr edicted from the Sjostrand bike t e s t , as modified by Adams, Linde, and Miyake (19 61 ). In t h i s study they reported a c o r r e l a t i o n c o e f f i c i e n t of r = 0.877 between actual and 9 predict ed VO^ max. From the above st u d ie s , appear to be very successful s t a t i o n a r y cy cl in g tests in p r e d i c t i n g VO^ max. Bench Stepping Tests Several of the o r i g i n a l field te s t s o f physical f i t n e s s were based on the recovery he a rt r a t e responses f ol lo w in g a standardized work task o f bench stepping. Among the e a r l i e r , more popular te s t s are the T u t t l e Pu lse-R atio Te s t, developed by T u t t l e (1 93 1 ), and the Harvard Step Te s t, developed by Brouha (19^3). attempt to p r e d i c t VO^ max but r a t h e r , These o r i g i n a l rated physical studies did not f i t n e s s on an a r b i t r a r y scoring index r e l a t i v e to recovery heart r a t e s . In the ev a lu a ti o n of submaxima 1 te s t s commonly used f o r pre d i c t i o n of V02 max by deVries and Klafs (19 65 ), the Harvard Step Test and the Progressive Pu ls e -R at io Test (Waxman 1959) were among those t e s t s examined. The t e s t s were c o r r e l a t e d wit h the actual VO^ max of a group of 16 c ol le ge age males w i t h c o r r e l a t i o n s o f r = 0.766 and r = 0.7U reported f o r each t e s t , respectively. It is evi den t from these r e s u l t s and the r e s u l t s of ot he r in ve s t i g a t io n s reported in the literatu re, t h a t p r e d i c t i v e methods o f determining VO^ max have proven to be very s uc ce ss fu l. CHAPTER 3 EXPERIMENTAL DESIGN This chapter shall provide information concerning s u b j e c t s , determination of VO^ max, the 800 meter swim, and f i n a l l y a s t a t i s t i c a l ana lys is o f the study. Subjects F i f t y male su b jec ts, ages 15*25 years, volunteered to p a r t i c i pate in t h is study. Table 1. C h a r a c t e r i s t i c s of t h is group can be found in Due to the nature of the study, subjects had to have pre vious swimming experience to be e l i g i b l e to p a r t i c i p a t e in the study. A large degree of v a r i a t i o n in swimming a b i l i t y was noted in the sub j e c t population ranging from moderately s k i l l e d r e c r e a t i o n a l swimmers to 1976 Olympic champions. Subjects from t h i s age group were selected based upon the following. First, i t was decided to examine a population t h a t con tained subjects w ith a wide v a r i a t i o n in swimming a b i l i t y and VO^ max, t h e r e f o r e , subjects who were c u r r e n t l y engaged in a swim t r a i n i n g program, as well as subjects who were not , were s e l e c t e d . The age range of 15 to 25 years is where most h i g h l y - t r a i n e d swimmers are found and also includes many l o w -t ra in e d swimmers. Secondly, t h i s age category would include a wide range of VO^ max values independent of age. t r a i n i n g level of each subject was determined fo r the purpose of 10 The Table I . Mean S u b je c t Data f o r T o t a l Group and f o r Each Group Ac cording t o T r a i n i n g Le v e l. ' High-Trained (n = 24) Trained (n = 16) Total (n = 10) V02 max (ml/kg x mi n) VO2 max ( l i ters/min) Age ( y r ) Weight (kg) 18.7 72.4 624.8 55.8 4. 0 3.1 11.3 68.9 4. 7 0 .6 42.8-64.6 15-25 48.7-94.6 21.7 72.5 692.1 51.5 3.7 2.9 5.8 78.9 3.8 0. 4 16-25 Low-Trained 800 Meter Performance Time (sec) 60.9-84.3 5 07 .3 - 793.7 600. 2- 937.2 44.2- 57. 1 2.94-5.14 2.90-4.36 23.5 71.1 928.9 46.3 3-3 2 .2 5.3 136.5 5. 9 0. 4 3 8 . 6- 60.0 18-25 62.2-78.4 Mean 20.6 72.2 707.2 52.5 3.8 Sigma 3.4 8.6 145.5 6.0 0. 6 Range 15-25 797.7-11 77. 3 2.67-3.93 (n = 50) 48.7-94.6 507.3 -1 17 7. 3 38.6-64.6 2.67-5.14 12 - i d e n t i f y i n g possible s i g n i f i c a n t r e l a t i o n s h ip s w i t h i n s p e c i f i c a b i l i t y groups. Each subject was assigned to one of the f o llo w in g three training le v e ls : Hi g h - t ra in e d (n = 24) — those swimmers who were c u r r e n t l y competing and had been t r a i n i n g f o r more than 3 months at over 30,000 meters/week. Trained (n = 16) — those swimmers who may have competed w i t h i n the previous year and had been t r a i n i n g between 3,000 and 30,000 meters/week f o r the previous s i x months. Low-trained (n = 10) — those swimmers who had not com peted w i t h i n the past ye a r , or who had never competed, and who had been t r a i n i n g less than 3,000 meters/week f o r the previous s i x months. The subjects were informed as to the nature of the study and the ex te nt o f involvement requ ir ed. Each subject was then allowed to observe a l l t e s t i n g procedures and to experience prior to consenting to p a r t i c i p a t e . the tethered swimming task The subjects indic ate d t h e i r w il li n g n e s s to p a r t i c i p a t e by signing the form of informed consent (Appendix A) which had been pr evi ous ly read and explained to them. The experimental protocol and informed consent form had been previously reviewed and approved by the U n i v e r s i t y o f Arizona Human Subjects Committee. 13 - Determination o f V0„ Max Each subject had his VO^ max determined during performance of the f r o n t crawl stroke w h il e tethe red to a cable and p u l l e y system which allowed resi st anc e to be app lied s y s te m a ti c a l ly (Figures 1 and 2 ) . This tethe red swimming apparatus is s i m i l a r to t h a t developed by C o s t i l l (1966). A continuous work task was used to e l i c i t a maximum e f f o r t from the swimmer. This work task was developed by Curry e t a l . (1979) and was designed to evoke maximum values w i t h i n 4% to 5 i minutes of ex e r c is e . Standard work protocols were estab lish ed based on a short p r e t e s t to determine, the maximum r e s i s t a n c e ” t h a t an in d iv id u al could support f o r 30 seconds. Using t h i s p r e t e s t value as an estimate of the maximum resi st an ce to be supported in the t e s t i t s e l f , f o r weight increments was determined f o r each subject In divid ua l d i ff e r e n c e s a progression (Appendix B ) . in swimming a b i l i t y were accounted f o r by ad ju st in g the workload acc ord in gly . The p r e t e s t consisted o f having the subject swim w h il e attached to the tethe red swimming apparatus to determine the g r e a t e s t amount o f resi st anc e in kilograms the swimmer could maintain f o r approximately 30 seconds. The actual t e s t f o r determination of V0^ max began with a f i v e minute warm-up period o f tethe red swimming a t a base workload which was es ta bl is hed as a percentage of the i n d i v i d u a l ' s predetermined work load as pr evi ous ly described above. s y s te m a ti c a l ly u n t i l achieved. The resistance was then increased the maximum r es is ta nc e f o r each in di v id u al was Toward the end of the t e s t , the subject experienced d i f f i c u l t y maintaining the o r i g i n a l forward p o s iti on in the water and began 14 eys Weight Pan Ru11ey Pool Deck Rubber B r ick on Bottom Figure 1. Swimming Ergometer, Side View. 15 Bel P l a s t i c Coated Cable Wooden Dowel Main Cable Figure 2. Swimming Ergometer, Overhead View. to be pul 1ed backward as the resi st an ce was increased. When the weights came to r e s t on the ground, the swimmer was i nst ru cte d to give a f i n a l a l l - o u t e f f o r t to move forward to the o r i g i n a l This a l l - o u t e f f o r t was maintained u n t i l po s it io n in the w ater. VO^ max was reached, as evidenced, by c r i t e r i a est abli she d below or u n t i l the subject volun t a r i l y terminated the t e s t . Throughout the t e s t , the subject breathed through a Hans Rudolph Respiratory Valve, Series #2700, which was attached to i n h a l a t i o n and e x h al a tio n tubing (Figure 3) • This breathing arrangement allowed the swimmer to maintain a h or iz on ta l po s it io n in the water and perform the crawl st roke in a manner as s i m i l a r as possible to f r e e swimming. . Expired gases were c o l l e c t e d and analyzed a t 30 second i n t e r v a l s during the t e s t using a Beckman Metabolic Measurment Cart. This instrument has been v a l i d a t e d by Wilmore, Davis, and Norton ( 1 97 6 ). Before and a f t e r each t e s t , the 0M-11 oxygen and LB-2 carbon dioxide analyzers were c a l i b r a t e d w ith gases of known con ce nt ra tio n. The con c e n t r a t i o n of the c a l i b r a t i o n gases was v e r i f i e d by the Scholander microtechnique p r i o r to and during the study. Gas volumes were measured w ith a biased flow t u r b in e which was c a l i b r a t e d d a i l y , before and dur ing t e s t i n g , a t the flow r a t e using a c a l i b r a t e d syringe (1.020 l i t e r s ) estimated f o r t ha t day's t e s t i n g . Max VO^ was i d e n t i f i e d f o r each subject a f t e r c a r e fu l adherence to predetermined c r i t e r i a . Subjects performed a second maximum teth er ed swimming t e s t w i t h i n 1k days of the f i r s t between t e s t s , t e s t , w ith a t le a s t one day re st to determine t e s t r e l i a b i l i t y . Subjects whose maximum 17 Hans Rudolph Valve Series #2700 Exhalation Tubing # ■uuiiiiiiiiiniiiiiimiHiinimmmuiimuiinuuiiiaiiim!} Mouthpiece In h al at io n Tubing 'iiijiiniiinniniinniim ilL Flexible Lightweight Tubing Figure 3. Breathing Apparatus. Adjustable Headgear values on these i n i t i a l two te s t s d i f f e r e d by more than 2 . 5 ml/kg x min were rete ste d a t h i r d time, w ith the two cl ose st values being averaged to provide the c r i t e r i o n VO^ max value (Appendix C ) . For some subje ct s, a second (n = 4) or a t h i r d could not be obtained. In these cases, as with a l l (n = 5) t e s t ot h e r subjects, the incomplete data was accepted only i„f they met the f o llo w in g c r i t e r i a 1) an R value equal to or g r e a t e r than 1.1; 2) a sharp increase in v e n t i l a t i o n without an accompanying r i s e in oxygen uptake; 3) a peak or plateau of oxygen uptake in the f i n a l minutes o f the t e s t . 800 Meter Swim Following the i n i t i a l t e s t to determine VO^ max, subjects performed an a l l - o u t 800 meter swim, timed to the nearest 0. 1 0 second, using the f r o n t crawl st rok e. They were i nst ru cte d to swim the 800 meters as qu i c k l y as pos si b le , stopping only i f necessary. s t a r t e d in the water and f l i p ducted in a 50 meter p o o l . turns were allowed. In several Al l subjects The swims were con instances (n = 6 ) , t e s t in g schedules forced subjects to perform both the 800 meter swim and the VO^ max t e s t on the same day. administered f i r s t . In these cases, the 800 meter swim was A minimum of one hour was then allowed before the V0g max t e s t was administered. The 800 meter swim was administered twice and the best time was used in the a n a l y s i s . 19 S ta tis tic a l T est-retest r e l i a b i l i t y Analysis co e ffic ie n ts , usi ng t h e Pearson c o r r e l a t i o n method, f o r the VO^ max d e t e r m i n a t i o n and th e 800 meter swim were c a l c u l a t e d t o assur e r e p e a t a b i l i t y data on a l l in o b t a i n i n g tho se measures. 50 s u b j e c t s were then s u b m it t e d t o r e g r e s s i o n analyses t o d e te r m in e th e p r e d i c t a b i l i t y o f VO^ max from s e l e c t e d v a r i a b l e s , age, body w e i g h t , swim. The tra in in g i.e . , l e v e l , and performance t im e i n t h e 800 meter Those v a r i a b l e s which were shown t o be s i g n i f i c a n t c o n t r i b u t o r s t o th e p r e d i c t i o n o f VO^ max were then used t o c o n s t r u c t a m u l t i p l e regression e q u a tio n . mined on a l l Le v e ls o f s t a t i s t i c a l s i g n i f i c a n c e were d e t e r t e s t s w i t h acceptance e s t a b l i s h e d a t t h e 0. 05 l e v e l . CHAPTER 4 RESULTS The subjects in t h is study formed a heterogeneous group char a c t e r i z e d by a wide range of v a r i a b i l i t y in. tethe red swimming VC^ max (38.6 to 64.6 ml/kg x min), performance in the 800 meter swim (507.3 to 1, 177 .3 s e c ) , and selected physical c h a r a c t e r i s t i c s (Table t ) . values f o r oxygen uptake and the performance swim fo r j e c t s are displayed in Appendix C (n = 5 0 ) . Maximal in di v id u al sub The t e s t - r e t e s t r e l i a b i l i t y c o e f f i c i e n t f o r VO^ max, as determined by tethered swimming (n = 4 5 ) , was r = 0. 96 and the r e l i a b i l i t y c o e f f i c i e n t f o r the times in the 800 meter swim (n = 33) was r = 0 . 9 9 . The m at ri x o f c o r r e l a t i o n s between VO2 max, performance time and the various physical characteristics appears in Table I I . T r a d i t i o n a l l y , oxygen consumption has been expressed r e l a t i v e to body we ight, bearing a c t i v i t y i.e. ml/kg x min and since swimming is a non-weight i t was decided to examine the VOg max r e l a t i o n s h i p with 800 meter swim performance time w ith VO. max expressed both in ml/kg x min and in l i t e r s / m i n . Figures 4 and 5 are s c a t t e r diagrams r e l a t i n g the swimming performance times w it h VO2 max expressed in ml/kg x min and l i t e r s / m i n , respectively, f o r each su b je c t. The simple c o r r e l a t i o n between performance time and VO^ max f o r the t o t a l sample (n = 50) was r = - O .63 (p < 0. 001) when expressed in ml/kg x min, and r = - 0 . 5 7 (p < 0. 001 ) when expressed in l i t e r s / m i n . 20 21 Table I I . C o r r e l a t io n M a tr i x (N = 50) Age Weight T ra in in g Level Performance Time Age, y r s . Weight, kg. 0,40 T r ai ni ng Level 0.56 -0.05 Performance Time 0.33 -0.12 0.7 4 0.11 0.68 -0.47 " 0 .56 - 0.31 -0.16 - 0 . 6l - O .63 VO^ max, 1i t e r s / m i n V02 max, ml/kg x mi n 1200. 00 O n o z > x x 3 o " n z i « i T 3 1120. 00 O 1040. 00 0 - HIGH -T R A IN E D A -T R A IN E D D - L O W -T R A IN E D 960. 00 080. 00 0 0 0 0 €> ms — -* Q 000. 00 0 A A ' A© z — 720. 00 A t/i o z <=} n m <st 640. 00 0 o ° % 560. 00 o e 400. 00 400. 00 I 30. 00 I I 30. 00 34. 00 I I 46. 00 42. 00 50. 00 OXYGEN CONSUMPTION ure 4. t 54. 00 1 L 70. 00 62. 00 50. 00 66. 00 ML/KG X MIN S c at te r Diagram of Performance Time and VO^ max i n ml/kg x mi n . 23 1200 . 00 moz»s^Jo"n3)mTJ 1 120. 00 O- h ig h - t r a in ed A - TRAI NED O- LOW-TRAINED 9 6 0 . 00 8 80. 00 rn k —■ -i □D 8 00. 00 Z — 7 2 0 . 00 □ z o o m </) 6 4 0 . 00 560. 00 400. 00 2 . 00 1. 00 1. 50 4. 00 3. 00 2 .5 0 3. 50 OXYGEN CONSUMPTION Figure 5. 6 . 00 5. 00 4. 50 5. 50 LITERS/M 1N S c at te r Diagram of Performance Time and VO^ max in Liters/M in. . 24 These c o r r e l a t i o n s were not s i g n i f i c a n t l y d i f f e r e n t . diagrams and c o r r e l a t i o n c o e f f i c i e n t s Both the s c a t t e r i n d ic a t e t h a t l i n e a r i t y of regression can be s a f e l y assumed between the performance swim and VOg max, t h e r e f o r e , strengthening any p r e d i c t i v e value f u r t h e r obtained from t h i s r e l a t i o n s h i p . Ad dition al statistical those v a r i a b l e s t h a t w i l l v a r i a b l e s were se l e c t e d , analyses were conducted to e s t a b l i s h suc ces sf ul ly p r e d i c t VO^ max. i.e ., age, body we igh t, t r a i n i n g level and performance time in the 800 meter swim. its i ndiv idu al Four p r e d i c t o r Each v a r i a b l e was examined f o r r e l a t i o n s h i p r e l a t i v e to the c r i t e r i o n VO^ max. c o r r e l a t i o n m a t ri x between a l l A paired measurements was es ta bl is hed in order to examine the i n t e r r e l a t i o n s h i p s among the p r e d i c t o r va r i a b l e s and the r e l a t i o n s h i p o f each p r e d i c t o r to the c r i t e r i o n v a r i a b l e of VO^ max (Table I I ) . It is undesirable in a regression ana lys is to incorporate the same v a r i a b l e into both the c r i t e r i o n v a r i a b l e and the p r e d i c t o r variable. This would h e a v il y weight t h a t v a r i a b l e as a p r e d i c t o r o f the c r i t e r i o n and produces a spurious c o r r e l a t i o n . This would be the case i f body weight were assigned as a p r e d i c t o r v a r i a b l e and were also contained in the c r i t e r i o n v a r i a b l e VO^ max (ml /kg x mi n r ) . Consequently, regression ana lys is was conducted w i t h VO^ max expressed in 1?t e r s / m i n . To determine the s p e c i f i c r o l e o f each of the v a r i a b l e s in p r e d i c t in g VO^ max the data f o r the t o t a l commonality a n a ly s is . tio n f o r a l l sample were subjected to a This an a ly s is determined the m u l t i p l e c o r r e l a of the p r e d i c t o r v a r i a b l e s combined; i d e n t i f i e d those 25 s i n g l e p r ed ic to r s which made s i g n i f i c a n t c o n tr i b u t io n s VOg max; and indicated the percentage of the t o t a l by each p r e d i c t o r . in pr e d i c t in g va ri anc e con tribut ed The F - t e s t was then used to determine i f the con t r i b u t i o n s were s i g n i f i c a n t a t the 0. 0 5 l e v e l . In Table I I I , the commonality o f the pr e d i c t o r s in the t o t a l c o r r e l a t i o n with VO^ max ( 1 i t e r s / m i n ) can be seen. 0.7 3 and an R = 0.8 6 (p < 0. 001) An value o f represent the v a l i d i t y of the f u l l regression equation c a l c u l a t e d w ith a l l o f the p r e d i c t o r v a r i a b l e s . 2 The R values f o r regression equations containing each s i n g l e p r e d i c t o r 2 v a r i a b l e sep ar at el y are labeled TOTAL R . The corresponding independent co n tr ib u t io n s of each v a r i a b l e to the t o t a l 2 UNIQUE R . the f u l l c o r r e l a t i o n are labeled 2 The percentage t h a t each v a r i a b l e represents of the R f o r regression equation is labeled PERCENT. Tests o f s i g n i f i c a n c e 2 2 were computed f o r both TOTAL R and UNIQUE R f o r a l l Independent co n tr ib u t io n s and are labeled UNIQUE and TOTAL (Veldman 1978). Upon examining each of the v a r i a b l e s made s i g n i f i c a n t co n tr i b u t io n s to the t o t a l in Table M l , those t h a t c o r r e l a t i o n both as inde pendent pr e d i c t o r s and in combination w it h each ot he r were selec te d. The v a r i a b l e s o f body we igh t, t r a i n i n g level and performance time were selected as the best set of p r e d i c t o r s , and a m u l t i p l e regression equation was constructed. Y '= where: Y' The equation was as fo ll o w s : 1 . 9 6 3 8 + .0425 (Xj ) - . 1 3 5 9 (X2) - is the pr edicted VO^ max ( l i t e r s / m i n ) ; (kg) of the sub ject; X^ Is the t r a i n i n g level 3.0 correspond to h i g h - t r a i n e d , .0014 (Xg) X^ is the body weight (values o f 1 . 0 , 2 . 0 , and t r a i n e d , and l o w - t r a i n e d , r e s p e c t iv e ly ) 26 Table I I I . Commonality Analysis of P r e d ic t o r Va ria bl es w ith VO. max in L i t e r s / M i n u t e TOTAL P r e d ic t o r V a ri a b l e UNIQUE R2 PERCENT Age 0.01 0.01 1.81 Weight 0.46 0. 22 Training Level 0.22 Performance Time 0. 32 Total R = 0 . 7 3 , Total UN IQUE TOTAL P = 0.139 P = 0.427 30.50 P < 0.001** P < 0.001** 0.02 3.66 P = 0. 0 0 3 7 * P = 0.001** 0. 05 89 6. 89 P = 0.006** P < 0.001** R = 0 .8 6 , S i g n i f i c a n t a t the 0. 0 5 level S i g n i f i c a n t a t the 0.01 level P < 0.001 27 of the sub jec t; and is the performance time (sec) f o r the 800 meter swim f o r each su b je c t. equation was R = 0. 85 It The c o r r e l a t i o n c o e f f i c i e n t f o r t h i s regression (P < 0 . 0 0 1 ) . is noted from the above t h a t t r a i n i n g level makes the le a s t absolute c o n t r i b u t i o n o f the t hr ee p r e d i c t o r s . Although i t is s t a t i s t i c a l l y s i g n i f i c a n t and does account f o r some o f the vari anc e, its practical significance is,sm all. The absolute e f f e c t t h a t t r a i n ing level makes on the pr edicted value o f VO^ max is so sm al l, ± 0.0042 liters/m in, t ha t i t s p r a c t i c a l val ue. inclusion in the regression equation o f f e r s little Consequently, t r a i n i n g level was del eted as a p r e d i c tor variable resulting in no s i g n i f i c a n t decrease in the value of the m ultiple correlation c o e ffic ie n t, R = 0. 8 5 to R = 0 . 8 4 . The f i n a l m u l t i p l e regression equation was as f ol lo w s: Y' = 2.1494 + .042 (X j) where: - .002 (X2) Y ' is the predict ed VO^ max ( l i t e r s / m i n ) ; X^ is the body weight (kg) o f the^subject; and X^ is the performance time (sec) meter swim. f o r the 800 The c o r r e l a t i o n f o r t h i s regression equation was R = 0. 84 (P < 0 . 0 0 1 ) . Using the f i n a l regression equation, a chart was constructed (Appendix D) t h a t provides the complete range of pred ict ed values o f VO^ max from the two p r e d i c t o r v a r i a b l e s . The v a r i a b l e s were ranged in body weight from 45 to 117 kg. and in performance time from 500 to 1000 sec. Values of VO^ max in l i t e r s / m i n were converted on the ch ar t to ml/kg x mi n. The standard e r r o r of p r e d i c t i o n was 0. 48 l i t e r s / m i n . CHAPTER 5 DISCUSSION The maximal oxygen uptake values obtained from the subjects in t h i s study were moderately high, min. i.e ., the mean value was 52. 5 ml/kg x This is most l i k e l y due to the la rg e number o f h ig h ly t ra in e d (n = 2k) subjects included in the study. These values are in agreement w i t h those reported by ot he r i n v e s t i g a t o r s measuring the VO^ max o f swimmers (Magel and Faulkner 1967; McArdle e t a l . 1971; Dixon and Faulkner 1971; Nomura 1978). The r e s u l t s o f t h i s study i n d ic a t e th at it is possible to pre d i c t VO^ max using body weight and performance time in an a l l - o u t , meter swim as the p r e d i c t o r v a r i a b l e s 800 in a m u l t i p l e regression equation. The c o e f f i c i e n t of m u l t i p l e c o r r e l a t i o n , R = 0.84, i nd ic at es a r e l a t i v e l y O high degree o f accuracy in the p r e d i c t i o n o f VO^ max. Approximately 70 percent o f the variance in VO^ max was accounted f o r by these two v a r i a bles alone. The standard e r r o r of p r e d i c t i o n , 0.4 8 1i t e r s / m i n , is c e r t a i n l y w i t h i n acceptable p r e d i c t i o n accuracy, and approaches the mag nitude of d i f f e r e n c e seen on repeat te s t s when VO^ max is measured directly. Body weight was found to have a la rg e influe nc e on the pr e d ic t io n of VO^ max, even though swimming is considered to be a non-weight bearing a c t i v i t y . Energy expenditure in swimming is t h e o r e t i c a l l y divided into two components. One component involves the energy cost 28 of f l o a t i n g . Obviously, t h i s l a r g e r amounts of f a t . is less f o r people who have r e l a t i v e l y The second component involves the energy cost o f producing the propu lsive for ce required to overcome water r es is ta nc e . This cost here is less f o r the l ea n er , more streamlined i n d i v i d u a l . Although t h i s theory indic at es t h a t both f a t weight and lean body weight c o n tr i b u t e in some degree to performance and VO^ max w h i l e swimming, body composition was not determined f o r the subjects in t h i s study. Further i n v e s t i g a t i o n into the r o l e o f body composition in swimming performance is in d ic a t e d . The p r e d i c t o r v a r i a b l e of performance time made a s i g n i f i c a n t influe nc e on the p r e d i c t io n o f VOg max. This s p e c i f i c performance task was selected to most a c c u r a t e ly r e f l e c t the i n d i v i d u a l ' s swimming endurance cap aci ty as i t r e l a t e d to VO^ max. I t was assumed t h a t the higher an i n d i v i d u a l ' s VO^ max the less time i t would take him to f i n i s h the performance tas k. The distance of 800 meters was designated as the performance task because of the f o ll o w in g reasons. F i r s t , a distance was needed which assured a predominant r e l i a n c e on the aerobic pathways to supply energy. Results o f running studies (Krahenbuhl e t a l . 1978; Ribi sl and Kachadorian 1969) have indic ate d t h a t an a l l - o u t run at distances in excess o f one m ile places considerable r e l i a n c e on the aerobic energy system. Krahenbuhl et a l . (1978) showed t h a t an 800 meter run and a 1200 meter run c o r r e l a t e d r = - 0 . 2 2 and r = - 0 . 4 7 w ith V0^ max, r e s p e c t i v e l y , mile) in young males. Whereas, the 1600 meter (0.992 run c o r r e l a t e d r = - 0 . 6 0 w ith VOg max. Rib isl and Kachadorian (1969) demonstrated t h a t an 880-yard run, a 1-mile run and a 2- m ile run c o r r e l a t e d r = 0 . 6 7 , 0. 79 and 0. 8 5 w it h VO^ max, r e s p e c t i v e l y , cating the dur ation of the run is c r i t i c a l o f aerobic ca p a c i ty . indi to the accurate p r e d i c t io n Jackson and Coleman (1976) have sub stantiated t h a t 9 and 12-minute runs provide accurate estimations o f endurance ca p a c i ty . . Other running studies have reported s i m i l a r r e s u l t s , indi cating t h a t distances re q u i r in g 10 to 12 minutes to complete adequately stress the aerobic energy system. Secondly, the r e s u l t s of an i n v e s t i g a t i o n by Jackson, Jackson, and Frank?ewicz (1979) i n d i c a t e t h a t the distance covered in a 12-minute swim is a v a l i d measure of swimming endurance. An 800 meter swim normally takes between 10 and 15 minutes to complete. The average time to complete the 800 meter swim in t h i s study was 11.8 minutes. This time frame places i t w i t h i n close approximation to a 12-minute swim. Thirdly, the performance task in t h i s study was defined as the time to complete a f i x e d distance as opposed to the dista nce covered in a f i x e d time, as i t allowed f o r g r e a t e r accuracy in measurement. When swimming f o r a f ix e d time, the swimmer may be somewhere in the middle o f the pool a t the end o f the t e s t . the t o t a l distance covered. Some accuracy is l o s t when estimating Also, i t was f e l t t h a t i t is considerably e a s ie r to perceive the magnitude of a task when the exact distance is known. This g r e a t l y f a c i l i t a t e s the swimmer's pacing and s t r a te g y , which are important considerations w ith regard to subject m ot iv a tio n. M ot iv at io n plays a s i g n i f i c a n t r o l e in the a d m i n i s tr a t i o n of the 800 meter a l l - o u t swim. It is e s s en t ia l t h a t the swimmers be motivated to push themselves to t h e i r peak aerobic capacity f o r t h i s to be considered a v a l i d t e s t of t h e i r maximum endurance ca p a c i ty . A test is only as good as the e f f o r t provided by the swimmer. Upon s e l e c t i n g the v a r i a b l e s to be used in the p r e d i c t i o n , a question arose w ith regard to the inclusion of t r a i n i n g v a r i a b l e in the f i n a l regression equation. level as a Although t r a i n i n g level was a strong independent p r e d i c t o r of VO^ max, when combined w ith the o th er variables, i t did not make a s i g n i f i c a n t change in the p r e d i c t io n accuracy o f the f u l l regression equation. due to the f a c t t ha t t r a i n i n g level mance time of the 800 meter swim. This phenomena is most l i k e l y is a c t u a l l y r e f l e c t e d in the p e r f o r I t would be expected t h a t the more experienced, h i g h l y - t r a i n e d swimmers would swim f a s t e r than the less experienced, lo w - t ra in e d swimmers*. Also, VO2 max values w i l l be higher in the more h i g h l y - t r a i n e d swimmers a n d , lower in the l e s s e r - t r a i n e d swimmers. Hence, t h i s would account f o r the la rg e c o n t r i b u t i o n of t r a i n ing level as a s i n g l e p r e d i c t o r of \J0^ max and the smaller c o n t r i b u t io n i t made when combined w it h performance time. Of p a r t i c u l a r i n t e r e s t in t h i s study was the i ncl usi on of two subjects who were h i g h l y - t r a i n e d distance runners w it h VO^ max values g r e a t e r than 60.0 ml/kg x min when tested on the t r e a d m i l l . inexperienced swimmers and were c l a s s i f i e d They were in the l o w - t ra in e d group. Although t h e i r swimming VO^ max values were r at he r high, 60. 0 and 48.2 ml/kg x min, t h e i r swimming performances were two of the thr ee slowest times. city. Obviously, t h i s data serves to r e i n f o r c e the concept o f s p e c i f i I t st ron gl y suggests, t h a t endurance capacity is s p e c i f i c to the type o f a c t i v i t y involved, i.e ., a grea t endurance cap aci ty f o r running does not mean t h a t you w M 1 have a gr ea t endurance cap aci ty f o r swimming. Also, t h i s implies t h a t s p e c i f i c i t y in t e s t i n g methods is necessary to insure accurate and v a l i d measurement of endurance cap ac ity in any a c t i v i t y , a l l o f which f u r t h e r supports the o r i g i n a l purpose of t h i s study, which was to develop a t e s t of c a r d i o r e s p i r a t o r y endurance capacity s p e c i f i c to swimmers. The success of p r e d i c t i n g VO^ max from body weight and p e r f o r mance time in the 800 meter swim is indicated by the m u l t i p l e c o r r e l a t io n c o e f f i c i e n t R = 0 . 8 4 . This value is f a r above the g e n e r a ll y accepted lev el s of r = 0. 6 0 f o r a useful fitness test (Mathews 1973). In order to comprehend the magnitude o f such a c o r r e l a t i o n it is neces sary to compare i t w ith the success of ot he r p r e d i c t i v e methods. The . v a l i d i t y c o e f f i c i e n t s o f various p r e d i c t i v e methods reported by other i n v e s t i g a t o r s are displayed in Table IV. I t can be seen t h a t the 800 meter swim compares very well w ith ot he r studies attempting to p r e d i c t V02 max. Table IV. V a lid ity of F i e l d T e s t s f o r P r e d i c t i n g VO^ Max. n Sex Age Duration of Test 12 min. run-wa1k 115 M 17-52 12 min. 12 min. run-wa1k 600 yd. run-wa1k 9 9 M M 14-15 14-15 12 min. 600 yds. 12 min. run-wa1k 22 25 22 25 M 9-11 9-11 9-11 9-11 87 - A c t i v i t y and Test V a l i d i t y C o e f f i c ie n t Reference Run/Wa1k 9 min. run-wa1k 600 yd. run-walk 12 min. run-wa1k 2 mile run-wa1k 1600 m. run-walk F M F 12 12 9 9 min. min. min. min. 0.897 0.90 -0.62 Cooper 1968 D o o l i t t l e and Bigbee 1968 0.82 0.71 0.82 0.71 Jackson and Coleman 1976 23-58 600 yds. -0.64 F a l l s et a l . 1966 M M Col 1ege Col 1ege 12 min. 2 mile 0.54 -0.55 Katch and Henry 1972 117 M-F 6-8 1600 m. -0.60 Krahenbuhl et a l . 1978 - 12 min. run-walk 80 M 11-14 12 min. 0.65 Maksud and Coutts 1971 600 yd. run-walk 76 M 16-17 600 yd. 0.53 01ree et a l . 1965 UJ CO Table IV. Continued. Duration of Test Sex Age run-wa1k run-wa1k run-wa1k run-wa1k 11 11 11 24 M M M M 18-22 18-22 18-22 30-48 880 yd. 1 mile 2 miles 2 miles -0.67 -0.79 -0.85 -0.86 Ribisl and Kachadorian 1969 600 yd. run-waIk 6 min. run-wa1k 69 69 M M 9-12 9-12 600 yd. 6 min. -0.50 0.50 Vodak and WiImore 1975 Astrand-Rhymi ng Sjostrand 16 16 M M Col 1ege Col 1ege Astrand-Rhymi ng 24 M 17-33 16 16 M M Col 1ege Col 1ege 50 M 15-25 880 yd. 1 mile 2 mile 2 mile V a lid ity Coefficient Reference n A c t i v i t y and Test Bicycle 0.736 0.877 deVries and Klafs I 965 0.77 Glassford 1965 0.766 0.711 deVries and Klafs 1965 0.84 Santeusanio 1980 Bench Step Harvard Step Progress ive Pulse-Rat io Swim 800 meter f r o n t crawl 800 m. CHAPTER 6 SUMMARY F i f t y male subjects were studied in an attempt to determine the r e l a t i o n s h i p of selected v a r i a b l e s in p r e d i c t i n g VO^ max w h il e swimming. Age, body we igh t, t r a i n i n g l e v e l , performance time in an a l l - o u t 800 meter swim, and VO^ max during tethe red swimming were determined f o r each su b je c t. Test-retest r e l i a b i l i t i e s f o r the 800 meter swim and the VO^ max determinations were c a l c u l a t e d and found to be R = 0. 99 and R = 0.96, respectively. The v a r i a b l e s were submitted to regression a n a ly s is to d e t e r mine how each one r e l a t e d to V0^ max and to i d e n t i f y the best pr e d ic tor variables. I t was found t h a t body w eig ht, t r a i n i n g l e v e l , and performance time in the 800 meter swim were s i g n i f i c a n t l y r e l a te d (R = 0 . 6 8 , - 0 . 4 7 , and - 0 . 5 6 , o f VO^ max. R = 0. 85 r e s p e c t i v e l y ) as independent pr ed ic to rs The m u l t i p l e c o r r e l a t i o n of a l l (P < 0 . 0 0 1 ) . three v a r i a b l e s was I t was noted t h a t t r a i n i n g level made the l ea st absolute c o n t r i b u t io n of the thr ee v a r i a b l e s . Although i t was s t a t i s t ic a lly significant s i g n i f i c a n c e was small. (P = 0.037)» its practical Hence, t r a i n i n g level was deleted as a p r e d i c t o r v a r i a b l e . The f i n a l m u l t i p l e regression equation was constructed using body weight and performance time in the 800 meter swim as p r e d i c t o r v a r i a b l e s . The m u l t i p l e c o r r e l a t i o n f o r t h i s regression equation was R = 0. 84 (P < 0.001). The standard e r r o r of p r e d i c t i o n was 0. 48 35 liters/m in. The 36 magnitude o f t h i s c o r r e l a t i o n was s i m i l a r to c o r r e l a t i o n s of other successful p r e d i c t i v e methods using running, c y c l i n g , and bench stepping as the mode o f ex e r c is e . The r e s u l t s of t h i s study suggest the VO^ max w h il e swimming can be predicted suc ces sf ul ly based upon the r e l a t i o n ship between an a l l - o u t 800 meter swim, body weight and actual VO^ max determination in men ages 15 to 25 years of age. APPENDIX A SUBJECT CONSENT FORM P ro je c t T i t l e : A Swimming T e s t f o r P r e d i c t i o n o f Maximum Oxygen Consumption In v e s tig a to r : David M. S a nte usanio T h is is a re s e a rc h s tu d y in te n d e d t o d e ve lo p a t e s t f o r e s t i m a t ing th e endurance c a p a c it y o f an i n d i v i d u a l w h i l e swimming th e f r o n t c ra w l s t r o k e . The s tu d y w i l l be cond ucte d a t th e U n i v e r s i t y o f A r iz o n a McKale Pool and w i l l r e q u i r e each s u b j e c t t o r e p o r t on f o u r s e p a ra te days f o r t e s t i n g and t o f i l l o u t a P r e - E x e r c is e M edical H i s t o r y Form. Those who choose t o ta k e p a r t in t h i s s tu d y w i l l be r e q u ir e d t o swim th e f r o n t craw l s t r o k e in a s t a t i o n a r y p o s i t i o n u n t i l near exhaus t i o n w h i l e a tta c h e d t o a t e t h e r e d swimming e r g o m e te r . The t e t h e r e d swimming erg o m e te r c o n s i s t s o f a b e l t t h a t is p la ce d around th e swimmer's w a i s t and a tta c h e s t o a c a b le w h ich is run th ro u g h a s e r i e s of. p u l l e y s where a c e r t a i n amount o f w e ig h t w i l l be added f o r th e swimmer t o h o ld up w h i l e swimming. E x p ire d a i r w i l l be c o l l e c t e d and a n a ly z e d d u r in g th e swim t o d e te rm in e how much oxygen y o u r body used d u r in g th e t e s t . In o r d e r f o r th e e x p ir e d a i r t o be c o l l e c t e d i t w i l l be nece ssary t o b r e a th e i n t o a s p e c i a l l y designe d m o uthpiece t h r o u g h o u t th e t e s t . H e a rt r a t e w i l l be m o n ito re d d u r in g th e t e s t by th e placem ent o f t h r e e s u r fa c e e l e c t r o d e s on th e c h e s t . A t t h i s t im e , you may e x p e r i ence some m in o r d i s c o m f o r t from s k in a b r a s io n w h ich i s n e ce ssary t o ass u re p r o p e r a tta c h m e n t o f th e e l e c t r o d e s . T h is d i s c o m f o r t is te m p o ra ry and sh o u ld d is a p p e a r p r i o r t o e l e c t r o d e p lacem ent. On a subsequent day you w i l l r e t u r n t o McKale Pool where you w i l l swim 800 m eters ( a p p r o x im a t e ly 875 y a r d s ) u s in g th e f r o n t craw l s t r o k e . The tim e i t ta k e s you t o com ple te th e swim w i l l be re c o rd e d and compared w i t h y o u r maximum oxygen co n su m p tio n . I t w i l l be n e ce ssary f o r you t o r e p e a t both o f th e s e two t e s t s w i t h i n two weeks o f each o t h e r in o r d e r t o assu re t h a t we a re o b t a i n i n g a c c u r a t e measures. We w i l l s c h e d u le y o u r t e s t i n g p e r io d s in advance and you w i l l be e xpe cted t o a r r i v e p re p a re d f o r swimming. I t w i l l ta k e a p p r o x im a te ly f i f t y (50) m in u te s f o r each swimming e rg o m e te r t e s t and tw e n ty (20) m inutes f o r each 800 m eter swim. 37 38 A l l d a ta c o l l e c t e d from th e s tu d y w i l l be c o n f i d e n t i a l and a c c e s s i b l e o n l y f o r th e i n v e s t i g a t o r and th e t h e s i s com m ittee members. No r e s u l t s w i l l be i d e n t i f i e d w i t h r e s p e c t t o an i n d i v i d u a l ' s name. F i n a n c i a l com pensation f o r wages and tim e l o s t and th e c o s ts o f m edical c a re and h o s p i t a l i z a t i o n is n o t a v a i l a b l e and must be borne by th e s u b j e c t . T h is co n s e n t form w i l l be f i l e d in an a rea d e s ig n a te d by th e Human S u b je c ts Committee w i t h access r e s t r i c t e d t o th e p r i n c i p a l i n v e s t i g a t o r o r a u t h o r iz e d r e p r e s e n t a t i v e o f th e p a r t i c u l a r d e p a r tm e n t. A copy o f t h i s conse n t form is a v a i l a b l e upon r e q u e s t . The o b j e c t i v e s , p r o c e d u r e s , and r i s k s o f t h i s s tu d y have been e x p la in e d t h o r o u g h ly t o me. I am r e q u e s tin g t h a t I p a r t i c i p a t e in t h i s s tu d y and I u n d e rsta n d th e commitment o f p a r t i c i p a t i o n , b u t r e a l i z e I may w ith d r a w from th e s tu d y a t any tim e w i t h o u t i l l w i l l , o r a f f e c t i n g my u n i v e r s i t y s t a n d in g . S u b j e c t 's S ig n a tu r e _____________________________Date________________________ P a r e n t 's S ig n a tu r e ^ ______ ( i f under 18 y e a rs o f age) Da t e Wi tness Date APPENDIX 8 METHOD USED TO CALCULATE STANDARD LOAD PROGRESSIONS FOR ESTIMATED MAXIMUM LOADS = 4. 00 KG. AT TIME WORK LOAD CALCULATED AS FOLLOWS 0.00 Base work load (B^) = 0. 25 1:00 to 4:00 Base work loads B^ through Bj. remain the same. 5:00 , 6:00 • Exercise work load (Est. Max)* r (E.) (Est. Max)* = 0.50 Exercise work load (£ 2) = work load f o r E, plus 35% of A, where A = d i f f e r e n c e between work loads f o r E, and E _ . * * I 5 6:30 Exercise work load ( E , ) E2 plus 28% o f A . * * 5 = work load f o r 7:00 Exercise work load ( E . ) E- plus 22% of A . * * = work load f o r Exercise work load - 1.00 kg. = (Est. Max.) 5 7:30 8:00 8:30 and each a d d it io n a l 30 seconds (EL) b Exercise work load (E^) = E^ + 0.25 kg. Add 0 .2 5 kg. * A l l values rounded to nearest 1/4 kg w ith values ending in ex a c t ly 1 / 8 , 3 / 8 , 5 / 8 , or 7 / 8 kg rounded to the next higher 1/4 kg. * * Cumulative rounding e r r o r s oc c a s i o n a l ly resu lted in a s i t u a t i o n in which one of these work loads had to be a l t e r e d s u b j e c t i v e l y by ± 1/4 kg. A l t e r a t i o n s were based upon: (A) smoothing progressions w i t h i n corresponding load increments across estimated maximum loads, and (B) smoothing the progression w i t h i n the given estimated maximum load across ex e rc is e work loads across E, to Er . I 5 39 APPENDIX C INDIVIDUAL SUBJECT CHARACTERISTICS 40 Subject I .D . 800 Meter Performance ( in seconds) Best Time Other • VOg max Determinations ml/kg x min 1 II III Age (yrs) Weight (kg) Traini ng Leve1* 01 24 85.7 1 516.2 - 58.4 02 23 81.6 1 557.3 - 58.4 03 18 66.6 1 507.3 - 04 19 79.0 1 667.6 05 25 66.2 1 06 22 81.5 07 25 08 6 VO2 max C r i t e r i o n Va ria bl e ml/kg x min 1/min 58.4 5.01 55.5 57.0 4.64 61.6 61.9 61.8 4.12 - 53.5 51 .7 52.6 4.15 607.7 - 65.4 63.4 64.2 4.25 1 550.7 - 55.7 58.5 57.1 4.65 65.0 3 1126.4 - 59.0 61.0 60.0 3-93 18 67.0 1 576.9 - 61.9 62.0 62.0 4.14 09 23 94.6 1 571.5 - 54.3 54.3 54.3 5.14 10 24 91.4 1 563.5 - 55.0 57.2 56.1 5.13 11 19 72.3 1 646.3 652.1 51.1 50.8 51.0 3.68 12 25 67.8 3 839.0 845.8 47.2 47.9 47.6 3.22 13 18 72.1 2 699.3 704.4 47.5 45.5 46 .5 3.38 14 18 62.2 3 807.1 822.0 48.5 50.1 49.3 3.07 15 19 ^ 73.5 2 651.2 651.0 54.3 50.7 51.8 3.81 16 17 77.1 1 681.6 705.3 54.8 52.4 53.6 4.14 17 16 64.7 1 715.7 721.4 49.6 53. 6 54.4 3.52 18 17 63*0 1 717.7 745.5 44.5 49.2 49.2 3.10 18 17 61.3 1 725.1 756.4 54.0 52.6 53.3 3.26 20 24 78.4 3 806.3 - 47.4 44.8 46.1 3.62 63.8 50.4 55.1 bj I .[ Age (yrs) 800 Meter Performance ( in seconds) Best Time Other VOg max Determinations ml/kg x m(n 721.1 - 43.2 46.3 I 11 TT 23 64.7 2 22 24 74.6 2 614.7 661.4 54.8 59.5 23 19 84.5 1 607.4 .612.7 53.5 24 19 87.3 1 793.7 800.0 25 15 66.9 1 598.1 26 16 60.9 2 27 25 81.3 28 25 29 VO2 max C r i t e r i o n Va ria bl e ml/kg x min 1/min III 57.0 OO Tr ai ni ng Level* -3° Weight (kg) 2.90 57.1 4.36 53.4 53.4 4.52 42.6 43.1 42.8 3.74 603-3 56.6 58.7 57.6 3.85 681.4 702.3 57.9 55.4 56.6 3.45 2 630.4 632.3 52.2 50,4 51.3 4.18 77.0 2 625.6 636.7 54.3 54.1 54.2 4.18 25 71.5 3 879.0 901.3 48.4 49.9 49.2 3.52 30 23 71.0 2 698.3 700.1 53.9 52.8 53.4 3.78 31 17 60.2 1 684.2 710.6 52.5 54.6 53.6 3.22 32 17 61 .2 1 63 2 . I 640.0 56.4 57.5 56.9 3.48 33 16 6 9 .O 1 637.5 641.5 52.9 53.2 53.0 3.66 34 22 70.7 2 672.9 - 55.4 55.4 3.92 35 22 74.4 2 623.8 625.8 53.8 53.6 53.6 3.99 36 15 70.4 1 586.4 595.9 55.7 57.4 56.6 3.98 37 .16 73.4 2 682.7 690.6 52.5 54.6 53.6 3.94 38 23 77.0 3 837.2 845.7 39.6 41.4 40.5 3.12 39 25 71.4 3 797.7 800.0 40.9 39.7 40.3 2.88 40 22 75.0 2 600.2 621.6 52.1 49.9 53.0 3.90 41 22 84.3 2 937.2 952.6 44.8 43.7 44.2 3-73 . 53.4 54.0 800 Meter Performance ( in seconds) Best Time Other Age (yrs) Weight (kg) Training Leve1* 42 25 66.8 2 749.3 - 48.3 43 15 48.7 1 622.0 622.3 67.1 60.0 44 23 71.4 3 955.3 1017.8 42.0 45 25 69.1 3 1177.3 1240.6 46 16 66.1 1 646.0 47 21 72.0 2 763.1 48 24 68.0 2 722.5 49 18 72.0 1 583.5 50 22 77.1 3 1064.1 * T ra in in g l e v e l : vo2 VO2 max Determinations ml/kg x min 1 II Ml. Subject I.D . C r i t e r i o n Va ria bl e ml/kg x min 1/min 48.3 3.22 60.4 2.94 43.5 42.8 3.05 38.2 39.1 38.6 2.67 660.2 53.8 55.3 54.6 3.61 - 50.7 50.7 3.65 50.0 3.40 64.6 4.64 48.2 3.71 51.0 49.0 583.8 64.2 64.8 - 48.2 1 = h ig h - t r a i n e d ; 2 = t ra in e d ; 3 = low-trained 60.8 ' APPENDIX D PREDICTED VOg MAX CALCULATED FROM THE REGRESSION EQUATION AND CONVERTED TO ML/KG X MIN 44 Performance Time (seconds) Body W e i g h t 510 920 330 590 5^0 560 370 50R Sop 6»o 610 620 690 600 650 660 670 600 690 700 710 720 730 790 750 760 770 700 790 000 0 |O 02O 030 000 050 060 070 000 090 900 910 920 930 9 00 950 960 970 900 99 0 JQOO AS 40 67 9 67, 8 66 7 66 2 65, 0 65 S 60, 9 60, 0 69 0 63, 9 63, t 62, T 62, 2 68 0 61, 9 60 9 60, a 60, ,0 5 9 , ,9 3 9 , ,1 90, ,7 59, ,2 37, ,0 37, ,3 56, ,9 3 6 , ,9 56 ,,0 55, ,5 55, ,8 So,,7 59, ,2 33, ,9 33, J 92, ,9 5?, ,0 3 2 , ,0 51, ,5 3 1 , ,1 SO,,7 3 0 , ,2 99, ,9 <39,,5 A9,>9 q<3,,0 90,,0 q f , ,5 q7, ,1 46, ,7 96, ,2 95,,9 95,,3 65. g 63. 5 65. 1 60. 7 60. 3 63. 9 63. 4 63. 0 62. 6 62. 5 61. 9 61, a 60. 9 60. 9 60. 8 5°. 7 59. 3 50. 9 98. 9 50. 0 37, 6 97, 2 3 6 , ,8 3 6 . ,9 95, 9 5 5 , ,5 5 5 , ,1 9 4 . ,7 9 9,5 9 3 . ,9 9 3 . ,9 93, 0 52. 6 32. 2 51. 8 51. 0 5 0 . ,9 90. 9 SO. ,3 99. 7 94. 3 9 8, ,9 9 0 .,4 98. ,0 9 7. ,6 97, 2 46, ,0 46, ,0 45, ,9 95. ,9 09,3 SI 60 69 63 63 63 62 62 61 61 68 60 60 39 59 59 58 30 57 37 37 56 36 35 35 S3 90 90 S3 53 93 52 52 92 51 91 30 50 90 99 99 98 90 98 97 97 46 96 46 99 93 49 9 1 8 0 0 6 2 8 0 0 6 2 0 0 9 7 3 9 9 1 7 3 9 5 1 7 3 9 6 2 A Q V 6 2 8 4 0 6 2 9 5 8 7 3 9 9 8 7 3 9 Sq 57 60 63 6 3,3 6 2,9 62.3 62,2 61.9 61,0 61.8 60.7 6 0,3 6 0,0 59.6 39,2 5 8,0 9 0,5 58,8 97,7 9 7,4 9 7,6 96.6 96,2 9 3.9 99.9 35.1 5 o ,e 50.4 99,6 53.7 3 3,3 32.9 92,5 92,2 51,8 5 8.0 51.1 30.7 5 0,3 50,0 4 9.6 99,2 98,0 90.5 90.8 4 7.F 97,4 97,0 96,6 96.2 99,9 45,9 99.1 44,8 62 2 68, 8 61, 9 61, 8 6 0, 8 60, 0 60, 1 9 9, 7 59 a 3 9, 0 38 7 9 8, 3 50 0 3? 6 3 7, s 56 9 36 6 36, ,2 39,,0 35, ,5 55,,1 30,,8 34, ,0 3a,,8 93, ,7 S3, ,4 S3,,0 92, ,7 52, ,3 32, ,0 31, ,6 31, ,3 50, »9 90, ,6 SO,,2 94, ,9 09,,5 99, ,2 90,,0 48, ,9 98,,1 97,,0 97,,9 97, ,8 96,,7 96, ,0 96,,0 99,,7 99,,3 49, ,0 99, ,6 6 1,2 6 9,8 6 0.5 60.2 99,0 3o,g 9 9,2 98,0 5 8,9 98,2 97,9 9 7,9 97,2 96,0 36;3 56,2 55,0 99,9 99,2 59.8 94,3 50,2 53,0 53.3 5 3.2 52.0 9 2,9 92.2 91,0 98.3 91.2 50,0 50.3 50.2 49,0 49,3 99,2 48,0 96.9 9 0.2 97,0 97,3 97.2 46.0 46,9 96,2 95.0 99.9 4 9.2 99.9 4 4,9 6 9,2 39,9 59,6 99,3 99.0 38,7 5 8,3 58,0 97,7 57,0 97.1 96,0 36,0 56,8 99.8 95,3 95.2 34,0 3 0,9 30,2 33.9 3 3,6 93iS 5 2,9 52,6 3 2,3 92,0 9 1,7 31,0 9 1.0 90,7 90,0 90,1 49.8 49,9 9°, 1 48,0 90.9 4P,8 47.9 47,9 47.2 9 6,9 96,6 46,3 96,0 49.6 49,3 99.0 49,7 94.0 66 99 99 90 98 50 97 97 97 97 96 96 96 99 95 99 94 94 94 94 93 93 93 92 92 92 91 98 98 90 90 90 90 49 99 99 40 48 98 97 47 47 97 46 96 46 93 93 95 99 99 99 0 1 0 9 2 4 6 3 0 7 a 8 8 9 2 g 6 3 0 7 0 8 7 a 8 0 9 2 9 6 3 O 7 a 1 0 9 2 9 6 3 0 7 0 8 0 9 2 9 6 3 69 38.7 3 0,0 98.1 97.8 9 7.9 3 7,2 56.9 96.6 36,3 96,0 5 9,0 35,9 9 9.2 54,9 39,6 59,3 59.9 93.7 93.9 53,2 5 2.9 92.0 52,3 9 2,0 91.7 3 1,0 91 i 8 38,0 5 0,3 9 0,3 90,9 00,7 44,0 09.8 40,6 90.9 48.2 4 7.9 97.6 07,0 47.1 9 6.0 96,3 96,2 43,9 09,6 05,3 03.0 99.7 44.9 99.2 72 38 97 97 97 36 96 96 96 95 59 93 54 94 94 90 93 93 93 93 92 92 92 91 91 91 91 90 90 90 49 Q? qg 99 98 98 40 98 47 97 97 46 96 46 96 49 99 99 99 99 94 49 0 7 9 8 g 6 3 Q 7 9 2 9. 6 0 1 0 9 2 0 7 0 1 g 6 3 8 7 9 2 g 6 0 1 0 9 8 0 7 0 1 9 6 3 0 7 9 2 g 6 a 1 (kilogram s) 79 70 08 97.3 37; 8 9 6,0 5 6,9 3 6,3 3 6.0 5 3.7 5 9.9 5 9.2 3 9,4 9 0,7 59,0 30,8 93,9 3 3,6 93*3 93.1 3 2,0 9 2.9 9 2,3 9 2,0 5 1.7 91,9 91,2 9 0,9 30.7 5 0.0 50.8 09,9 04.6 0 9.3 09,1 98,0 90,9 00,3 49,0 07,7 07,9 0 7,2 4 6,9 06.7 96,0. 96,8 49.9 95,6 09,3 99,8 99.8 9 4.9 49,3 94.9 56,7 9 6,3 96.2 96,0 9 3.7 9 9.9 95,2 s o ,g 90,7 90,0 9 0,2 93,9 93,7 53.0 33,1 92,9 3 2,6 92,0 52,1 91,9 3 1.6 91,0 91.1 5 0,8 9*3,6 9 0,3 90.1 4 9.0 09,6 09,3 0 9,0 08,8 08.9 48.3 0 8,9 47,8 9 7,9 97.2 9 7,0 96,7 9 6.9 4 6.2 46,0 45,7 43,3 9 9.2 99.9 49,7 94,4 9 9.2 4 3,9 56.2 99,9 93,7 53,9, 93*2 3 9,0 99,7 9 0.3 50,2 9 4,0 9 3,7 9 3,9 93,2 93,0 32,7 52,9 9 2.2 32,0 9 1,7 91,9 51.3 98,0 50.8 30;9 99,3 38,0 99.8 09.9 0 9,3 0 9,0 98,0 48,9 09,3 09,0 47,8 0 7.5 97,9 07,1 46,0 06,6 06,3 06,1 09,8 09,6 49,3 03,1 44.0 49,6 49.3 49,8 43,8 93 99 33 33 56 94 90 94 33 93 33 93 92 92 92 52 91 91 91 91 90 90 98 90 90 og og og og 08 90 98 40 97 07 47 47 96 46 96 96 95 49 99 99 99 94 49 40 44 93 69 0? 7 4 2 0 7 9 3 0 8 9 3 8 0 6 3 8 9 9 5,2 9 9.9 90,0 34.3 3 0,3 30,1 9 3,8 9 3,6 53.0 93,1 5 2,9 52.7 52.9 92.2 9 2.0 3 1,0 3 8,3 9 1,3 91,1 30,0 9 0.6 3 8.0 30,2 09,9 qg.F 49,9 09,2 09.0 08,0 40.9 48,3 08.1 07,9 0 7.6 07,0 07.2 66,9 06,7 06.9 9 6,2 96,9 95,0 99.6 49.3 49,1 94.9 49,6 99,0 4 9,2 9 3,9 93.7 4 2 9 7 a S 0 7 9 3 0 0 9 3 8 0 6 3 8 9 6 0 2 g '7 4 2 0 7 9 3 0 8 90 90 90 94 94 93 93 93 53 53 92 32 92 92 91 91 si 91 91 SO 50 50 99 og og og og og 40 08 08 08 47 07 07 07 07 46 06 06 46 49 OS 95 95 49 44 04 49 qo 93 43 8 9 3 8 g 7 4 2 0 8 9 9 8 9 7 9 2 0 0 9 3 1 g 7 0 2 0 8 9 3 8 g 7 0 2 0 0 9 3 1 g 7 0 2 0 G 9 3 8 9 7 90 90 93 93 93 93 93 52 52 92 92 92 91 91 58 31 90 90 90 50 90 og qg qg og qg 48 00 40 00 97 @7 07 07 47 46 06 06 06 06 45 09 99 99 90 99 94 09 44 43 93 95 96 99 102 0 1 g 7 9 3 1 9 6 a 2 0 8 6 3 1 9 7 9 3 1 9 6 0 2 0 0 6 3 8 g 7 9 3 8 8 6 0 2 0 8 5 3 8 g 7 9 3 0 A 6 94.0 93,0 93.6 9 3,3 33,1 5 2 ,g 32,7 32,9 92,3 52.1 9 1 .g 91,7 91,9 91,3 91,1 90,0 90,6 30,0 5 0,2 9 0.0 49,0 09*6 09,0 09,2 09,0 00,0 00.6 00.3 00,1 07.9 07,7 07,9 47.3 07.1 06.9 06,7 06,5 06.3 06,1 45.0 49,6 95.0 4 9,2 49,0 44.0 44,6 99,0 44.2 4o.O 43.0 43,6 93.6 53.0 33.2 93.0 52,0 32,6 52,0 52.2 9 2,9 91.0 91.6 91,0 9 1,2 91.0 5 0,0 9 0.6 50,4 50.2 59.0 49.0 09,6 09,0 09,2 09.0 00,8 08,6 00,0 48,2 08,0 47,0 07,9 97,3 07.1 06,9 06,7 06.9 06,3 06,1 99,9 09.7 03.9 09,3 05,8 00,9 00,7 44,3 41.3 44.1 43,9 41.7 43.5 S3,,3 93, ,8 92, ,9 92,,7 3 2,,9 52,,3 92, ,8 91,,9 31, ,7 91,,9 S I , >3 SI ,1 90, ,9 9<",,7 90, ,9 30, >3 90, ,1 og,,9 og, ,7 09, ,3 09, ,3 09, ,2 09, ,0 06, >8 00, ,6 00, ,0 00, ,2 00, ,0 07, ,9 0 7 ,,6 0 7 ;,0 07, >2 07,,0 06,,0 06, ,6 06,,0 06, ,2 06, ,0 05, ,0 43, ,6 45, ,0 45,,2 43,,0 44,,8 44, ,6 44, ,0 44, >2 44, ,1 43, ,g 43,,7 43, ,5 169 100 118 fi 14 117 52, 9 52, A 92. 6 92, 0 92, 2 32, 0 31, 0 31. 6 51. 4 91. 2 91. @ 90. 9 38. 7 30, 9 38. 3 30. 1 09, 9 09, 7 09. 9 09. 3 09, 1 00. 9 00, A 00. 6 00. a 08. 2 09, 6 07. A 07. 6 07. a 07. 2 07, 0 06, 9 06, 7 06, 9 06, 3 06, 1 OS. 9 09. 7 09, 9 <19. 3 03, 1 00, 9 00, 8 00. 6 44. 0 44. 2 44. A 43, 6 43. 6 41. 4 52,,6 32, ,9 92,»3 92, ,1 91, ,9 91,,7 91, ,5 91, 13 91, ,2 91,,0 s«,,0 90, ,6 90, ,0 30, ,2 30, ,0 09, ,9 09,,7 49,,9 09,,3 0 9 ,,1 00, ,9 08, ,0 08,,6 00, ,4 00, ,2 OR,,0 07,,8 07, ,6 o?, ,5 47,,8 07, ,1 06, ,9 06,,7 06,,5 06, ,3 46, ,2 46,,0 45, ,8 45,,6 49, ,0 45, ,2 45, ,0 44, ,9 44, ,7 44, ,5 44,,3 44, ,1 43, ,9 43, ,8 43. ,6 43, ,4 32, ,0 92, ,2 52, ,0 31, ,e 91, ,6 51,,9 91, ,9 51, ,1 90, ,9 9 0,,7 9 0, ,6 99, ,0 54, ,2 98, ,9 09,,9 09, ,7 09, ,9 09, ,3 09,,1 06, ,9 0 8 ,,0 98, ,6 00, ,0 08,,2 60, ,0 07, ,9 07, ,7 07,,9 07, ,3 07, ,1 06, ,9 00, ,8 96,,6 96, ,0 06, ,2 06, ,0 93, ,g 49, ,7 45, ,9 45, ,3 09, ,1 49, ,0 44, ,8 04, ,6 4 0 ,,0 40, 1? 40, I OS,,9 43, ,7 43,,3 4.5,,3 5 2 , ,1 9 1, 9 91, 7 3 1 , ,6 51, 0 S I. 2 51, 0 90. 9 90. 7 38. 9 90. 3 90* e 90, 0 09. 0 09. 6 09, 9 0 ?, 3 09,1 08, 9 08. 7 00, 6 08, a 08, 2 08. 0 07, 9 07, 7 47, 9 07, 3 47, 8 0 7 , t? 06, 0 06, 6 0 6 , .9 96. 3 46, 1 45, 9 49, 8 45, 6 43, 4 45, 2 45, I 44. 9 44, 7 44, 9 94. 0 44,2 44. 0 43, 0 43. 7 43. 9 43. 3 91 . 0 91 .7 91 , 9 91 . 3 91 ,1 91 . 8 30 , 0 50 . 6 90 . 9 9 * .3 90 ,1 41 , 9 49 . 8 49 . 6 91 ,4 09 , 3 49 .1 40 . 9 00 . 7 OP . 6 00 • 4 49 »? 40 .1 47 . 9 47,,7 47 , 4 47 ,1 47 . 2 47 ,4 46 , 9 46 ,7 46 .3 46 .4 46 .2 46 . 8 IS .0 45 ,7 45 . 3 45 . 3 45 . 2 15 ,0 14 ,0 44 ,6 44 , 3 44,, 3 41,,1 41 ,*9 13 .8 43,,6 43, .4 43, Y'- = 2.1494 + .042 (X. ) - .002 ( x J . . . where: Y ' is the predicted V0^ max ( 1 i t e r s / m i n ) ; X is the body weight (kg); X^ is the performance time (sec) f o r the 800 meter swim. vn LIST OF REFERENCES Adams, H., L. M. Linde, and H. Miyake. The physical working capacity of normal school c h i l d r e n . I C alifornia. P e d i a t r i c s 28 :5 5- 64 , 1961 . Heart Andrew, G. M . , M. R. Becklake, J. S. G u l e r i a , and D. V. Bates. and lung funct ion in swimmers and non-a th let es during growth. J. A p pl . P h y s i o l . 32:245-251, 1972. Astrand , P. 0. Human physical f i t n e s s w ith special re ference to sex and age. Physiological Review 36:307 -33 5, 1956. The physiology of maximal performance. Astrand , P. 0. 41 :9 7 -1 0 6, 1973. Mod. Med. A nomogram f o r c a l c u l a t i o n of aerobic Astrand , P. 0 . , and I . Rhyming. ca pacity (physical f i t n e s s ) from pulse r a t e during submaxima1 work. J . Ap pl. P h y s i o l . 7: 21 8 -2 2 1, 1954. Ba 1k e , 3. A simple f i e l d t e s t f o r the assessment of physical f i t n e s s . C . A . R . l . Report. C i v i l Aeromedical Research I n s t i t u t e , Av ia t i o n Agency, Oklahoma C i t y , 1963. Maximal Bonen, ,\ . , B. A. Wilson, M. Yarkony, and A. N. Be lca st ro . oxygen uptake during f r e e , t e t h e r e d , and flume swimming. J. Appl. P h y s i o l . 48:23 2-2 35, 1980. The step t e s t : a simple method of measuring physical f i t n e s s Brouha, L. f o r muscular work in young men. Res. Qua rt . 14: 31 -3 5 , 1943. Carey, 3. , M. Stensland, and L. H. H a r t l e y . Comparison of oxygen uptake during maximal work on the t re a d m i l l and the rowing ergometer. Med. S c i . Sports 6: 101 -10 3, 1974. Clarke, D. H. Adaptations to strength and muscular endurance r e s u l t i n g from ex e r c is e . Exercise and Sport Science Reviews Vol. 1, J. H. Wilmore, e d . . New York: Academic Press, 1973. Cooper, K. H. A means o f assessing maximal oxygen i n ta k e . Assoc. 203:201-204, 1968. Use o f a swimming ergometer in ph ys iolog ica l C o s t i 11 , D. Res. Quart. 37:56 4-5 67, 1966. 46 J. Am. Med. research. 47 Cunningham, D. A . , P. B. Goode, and J. B. C r i t z . Ca rd io r e s p ir a t o r y response to ex e rci s e on a rowing and b i c y c l e ergometer. Med, Sc i. Sports 7 : 3 7 - 4 3 , 1975. Curry, B . , J . S. Wesolek, T. T. Kurowski, R. L. W el ls , W. W. Heusener, W. D. Van Hus.s. Development o f a tethered swimming ergometer and t e s t i n g protocols f o r e v a lu a ti n g the metabolic responses o f e l i t e swimmers. Unpublished m a t e r i a l , Michigan Stat e Univer s i t y , East Lansing, Michigan, 1979. Custer, S. J . , and E. C. Chaloupka. Re lat io nsh ip between predicted maximal oxygen consumption and running performance of col le ge females. Res. Q ua r t. 4 8 : 4 7 -5 0 , 1977. DeVries, H . , and C. K l a f s . P r e d ic t i o n of maximal oxygen uptake from submaximal t e s t s . J . Sports Med. and Phys. F i t . 5:207 -21 4, 1965. Dixon, R. W ., J r . , and J . A. Faulkner. Cardiac outputs during maximum e f f o r t running and swimming. J. Appl. P h y s i o l . 30:653-656, 1971 D o o l i t t l e , T. L . , and R. Bigbee. The twelve-minute run-walk: a test o f c a r d i o r e s p i r a t o r y f i t n e s s o f adolescent boys. Res. Quart. 39 -4 91-495, 1968. Falls, H. B . , H. A. I s m a il , and F. D. MacLeod. Estimation of maximum oxygen uptake in adults from A .A .H .P .E .R . youth f i t n e s s t e s t items. Res. Q ua rt . 37:192-201, 1966. Glassford, R . , G. B ay cr of t, A. Sedgwick, and R. MacNab. Comparison o f maximal oxygen uptake values determined by pr edicted and actual methods. J. Appl. P h y s i o l . 20: 509-513, 1965. Gregory, J . The r e l a t i o n s h i p of the twelve-minute run to maximal oxygen in ta k e . Master's t h e s i s , Mankato St at e College, 1970. Hartung, G. H. S p e c i f i c i t y of t r a i n i n g as indicated by h e a r t - r a t e response to e x e r c is e . Perceptual Motor S k i l l s 36:639-645, 1973. Jackson, A. A . , and A. E. Coleman. V a l i d a t i o n o f d i s t a n c e run t e s t s f o r e le m e n ta ry school c h i l d r e n . Res. Q u a r t . 4 7 : 8 8 - 9 4 , 1976. Jackson, A. A . , A. S. Jackson, and R. G. Frankiewicz. The construct and concurrent v a l i d i t y of a 12-minute crawl stroke swim as a f i e l d t e s t of swimming endurance. Res. Qu ar t. 50 :6 41 -6 48, 1979. Katch, V . , and F. Henry. Pr e d ic t i o n o f running performance from maximal oxygen debt and in ta k e . Med. Sci. Sports 4 : 1 87-191» 1972. 48 Krahenbuhl, G. S . , R. P. Pa ng ra z i, G. W. Petersen, L. N. B u r k e t t , and M. J. Schneider. Fi e l d t e s t i n g o f c a r d i o r e s p i r a t o r y f i t n e s s in primary school c h i l d r e n . Med. S c i . Sports 10:208-213, 1978. Magel, J . R . , and J . A. Faulkner. Maximum oxygen uptakes o f col le ge swimmers. J . A p pl . P h y s i o l . 22: 929-933, 1967. Magel, J . R . , and G. F. F o g li a , W. D. McArdle, B. Guti n, G. S. Pechar, and F. I . Katch. S p e c i f i c i t y o f swim t r a i n i n g on maximum oxygen uptake. J. Appl. Sports 38: 151-155, 1975. Maksud, M. G . , and K. D. Co ut ts . A p p li c a t i o n of the Cooper twelveminute run-walk t e s t to young males. Res. Q u a r t . 4 2: 54 -5 9 , 1971. Mathews, D. K. Measurement in physical education (4th e d i t i o n ) . Saunders Co., P h i l a d e l p h i a , 28-29, 1973. W. B. McArdle, W. D . , G. M. Roger, and J . R. Magel. Metabolic and ca rd io r e s p i r a t o r y response during f r e e swimming and t r e a d m il l wa lk in g. J. A p pl . P h y s i o l . 30: 733-738, 1971. M i t c h e l l , H . , B. J . Sproule, and C. B. Chapman. The phy siological meaning of the maximum oxygen intake t e s t . J . C l i n . Invest. 37: 538-547, 1958. Newton, J . L. The assessment o f maximal oxygen in ta k e . 3: 164 -16 9, 1963. Nomura, T. Maximal oxygen uptake o f age group swimmers. Ed. 22:301 -30 9, 1978. J. Sport Med. Jap. J. Phys. Olree, H . , C. Stevens, T. Nelson, G. Agnevik, and R. T. C la r k . Evalua t i o n o f the A . A. H. P. E. R. youth f i t n e s s t e s t . J . Sports Med, and Phys. F i t . 5 : 6 7 - 7 1 , 1965. Pechar, G. S . , W. D. McArdle, F. I . Katch, J. R. Magel, and J . Deluca. S p e c i f i c i t y o f c a r d i o r e s p i r a t o r y adaptation to b i c y c l e and t r e a d m il l t r a i n i n g . J . A p pl . P h y s i o l . 36:753-756, 1974. P e r r i e r Study: Fitness in America. Lo u is , H a rr i s and Associates, Inc. P e r r i e r Great Waters of France, I n c . , 595 Madison Ave., New York, N.Y. 10022, January 1979. Ribisl, P. M . , and W. A. Kachadorian. Maximal oxygen inta ke p r e d i c t io n in young and middle-aged males. J . Sports Med, and Phys. F i t . 9 : 1 7 - 2 2 , 1969. Santeusa'nio, D. M. A swimming t e s t f o r - p r e d i c t i o n of maximum oxygen consumption. Paper presented a t the American College of Sports Medicine's Annual meeting, 1980. 49 Maximal oxygen uptake r a t e during Secher, N. H. , and I . Oddershede. swimming and b i c y c l i n g . Swimming I I , I n t e r n a t i o n a l Series on Sport Science 2:137” 142, U n iv e r s it y Park Press, 1975. Stewart K. J . , and B. Gut i n . Ef f ec t s o f physical t r a i n i n g on ca rd io r e s p i r a t o r y f i t n e s s in c h i l d r e n . Res. Q ua r t . 47: 110-120, 1976. Str<J>mme S. B. , F. I n g j e r , and H. D. Meen. Assessment of maximal aerobic power in s p e c i f i c a l l y t ra in e d a t h l e t e s . J . Ap pl . Ph ysi ol. 42:83 3-8 37, 1977. Ta y lo r , H. L . , E. Buskirk, and A. Henschel. Maximal oxygen intake as an o b j e c t i v e measure o f c a r d i o - r e s p i r at or y performance. J . Appl. P h y s i o l . 8 : 7 3 - 8 0 , 1955. T u t t l e , W. W. The use of the p u l s e - r a t i o t e s t f o r r a t i n g physical e f f i ciency. Res. Q u a r t . 2 : 2 - 1 7 , 1931. Veldman D. J . The PRIME system: computer programs f o r s t a t i s t i c a l a n a ly s is . The Research and Development Center f o r Teacher Education. The U n i v e r s i t y o f Texas a t Au stin, 1978. V a l i d i t y of the 6-minute jo g- wa lk and Vodak, I '. A . , and J . H. Wi1more. the 600-yard run-walk in est ima ting capacity in boys, 9-12 years of age. Res. Q ua r t. 46: 23 0-2 34, 1975. Physical f i t n e s s developments f o r adults in the Y.M.C.A. Waxman, W. W. Exercise and F i t n e s s , U n i v e r s i t y o f I l l i n o i s and the A t h l e t i c I n s t i t u t e , 1959. Wi 1mo re J . H. S p e c i f i c i t y of physio logic al t e s t in g and a t h l e t i c condi tioning. American Swimming Coaches Assoc. World C l i n i c Yearbook, F t . Lauderdale, F l a . , pp. 33-46, 1979. Wi1more J. H . , J . A. Davis, and A. C. Norton. An automated system f o r assessing metabolic and r e s p i r a t o r y function during exer cis e. J . Ap pl . P h y s i o l . 40: 61 9- 6 24 , 1976. Wojtczak-Jarosowa, J . , and A. Banaszkiewicz. Physical work capacity during the day and a t n i g h t . Ergonomics 17:193-198, 1974.
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