# Exercise Design Lab

## What We Did

Luis checked his standing heart rate 3 times in a row at his neck, and got an average of 60 BPM. We set the experiment up so that we did jumping jacks, and sit-ups for 30 seconds each. After each 30 second period, Luis checked his heart rate standing up. Every time Luis checked his heart rate, he checked it at his neck. He repeated the jumping jacks 3 times in a row, and then switched to sit-ups.

## Hypothesis

After 30 Seconds of jumping jacks and sit-ups, jumping jacks will cause the heart rate to be faster. It will take the heart 15-20 seconds to recover.

## Variables

Independent Variable- Exercises (jumping jacks & sit-ups)

Dependent Variable- Heart rate

Control Variable- Resting heart rate

Constant Variables- amount of time exercising, standing while taking your heart rate, taking your heart rate from your neck

## Bibliography

Doggett, Laronna. "Exercise Design Lab." Biology Class. Coppell High School, Coppell. 7 March. 2014, Lab.

## Conclusion

After 30 seconds of jumping jacks and sit ups, the jumping jacks will cause the heart rate to be faster. This

was correct. It will take the heart rate 15-20 seconds to recover. This was incorrect. After doing 30 seconds of jumping jacks and 30 seconds of sit ups, the heart rate was faster after doing the jumping jacks, but, it took longer than 20 seconds for his heart rate to recover and get back to normal. His heart rate after the three trials of doing jumping jacks, his heart rates were 76 BPM, 64 BPM, and 144 BPM. The average was 94.66. The numbers for the 74 BPM, 100 BPM, and 106 BPM. The average was 91. So the average for the jumping jacks was higher. But, the recover times for jumping jacks were, 33, 20, and 45, and the recovery for the sit ups were 54, 30, and 45, making the second hypothesis incorrect. The numbers from the jumping were higher because it was more exerting than sit ups.