Name: MA Date: May 18th 2015 Hour: 2nd hour How Does Different Physical Activities Affect Your Heart Rate? The purpose of the experiment is to find out what physical activity will have the highest heart rate. In this experiment the scientist will test running, jump rope, and biking to see which one will have the highest heart rate. The hypothesis of this experiment is: If you test physical activities (running, jump rope, biking) and your heart rate while doing them then running will have the highest heart rate. According to sciencebuddies.org you can get an accurate heart rate for counting the beats in ten to fifteen seconds. It also states that you will want at least three different types of exercises. You should not use your thumb for finding your pulse because your thumb has its own pulse. According to Active.com cardiovascular exercise involves the use of large muscles in a repetitive fashion​
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And when performing cardio, blood flow is directed toward working muscles and away from areas that is not directed toward working muscles and away from areas that aren’t doing much. Also according to Active.com overtime, with chronic cardio training, our resting heart rate drops because each beat delivers more blood. The independent variable of this experiment is physical activities. The dependent variable of this experiment is the heart rate for each physical activity. The control group for this experiment is the resting heart rate. The experimental group is the heart rate with the physical activities. The scientist will replicate this experiment at least three times. The constants of this experiment are: how the scientist will test the heart rate, the same test subject, the same amount of time when checking pulse, same amount of time per activity, same amount of resting time, and same time of day. Name: MA Date: May 18th 2015 Hour: 2nd hour In step one of the experiment the scientist will first feel their radial pulse on the opposite wrist to get their resting heart rate. In step two the scientist will record their resting heart rate on a paper. In step three the scientist will test jump rope for ten minutes, recording the heart rate at the end of the ten minutes. In step four the scientist will rest until the heart rate is as close to the resting heart rate as possible. In step five the scientist will test biking for ten minutes and record the heart rate after the ten minutes. In step six the scientist will rest until the heart rate is as close to the resting heart rate as possible. In step seven the scientist will test running for ten minutes and record the heart rate after the ten minutes. In step eight the scientist will rest until the heart rate is as close to the resting heart rate as possible. In step nine the scientist will compare the data and find out if the scientists hypothesis was correct. The possible errors that could occur during this experiment is: not having enough resting time affecting performance, calculating the heart rate incorrectly, not being able to do each activity efficiently for the ten minutes, and there might be bad weather for the experiment affecting the experiment. Name: MA Date: May 18th 2015 Hour: 2nd hour The graph shows the different physical activities tested and their heart rate while doing them. In conclusion, the graph shows that running has the highest heart rate out of the other physical activities tested. The hypothesis stated that running would have the highest heart rate. The hypothesis was supported by the data. The test subjects resting heart rate was 60 bpm. The test subjects heart rate while running was 148 bpm. The test subjects heart rate while jump roping was 130 bpm. Lastly, the test subjects heart rate while biking was 116 bpm. This shows running had the highest heart rate while biking had the least. Your heart rate speeds up when doing physical activities because, according to bbc.co.uk “Exercise increases the rate at which energy is needed from food. This increases the need for both food and oxygen in the body. This is why your pulse rate and breathing rate increase with exercise. Your pulse is just an indication of your heart rate as your arteries expand each time the ventricles pump blood out of the heart.” A new question the scientist has is, what physical activity would get the closest to the test subjects resting heart rate? Name: MA Date: May 18th 2015 Hour: 2nd hour Citations "Steps of the Scientific Method." Steps of the Scientific Method. N.p., n.d. Web. 07 May …..​
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(URL?) ALPHABETIZE Nice Job! 54/58 93% Name: MA Date: May 18th 2015 Hour: 2nd hour