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Tianna Huynh KINE 3415-003 LAB 5: PREDICTION OF 1-RM AND MEASUREMENT OF POWER March 5, 2023 Courtney Weston
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Discussion Questions 1. Do those who have the greatest 1-RM also have the greatest power? Explain. Those who have the greatest 1-RM does not always have the greatest power. Power and strength are not the same thing. Power is defined as the amount of work completed in a predetermined amount of time. A person is very strong if he can lift a lot of weight in one rep, but if it takes him a long time, he is not as strong. There were a few people who did their exercises with a lot of weight, but they didn't have a lot of power because it took them longer to complete their sets than those who lifted less weight. 2. Should the power for the current lab be higher or lower than the power calculated in the anaerobic power lab? Explain. The anaerobic power test only used the muscles in the legs, whereas the current test only used the smaller muscles in the upper body, so the power of the test should be lower. Because they have a shorter amount of time to perform the movement or exercise, the leg muscles are able to recruit more fibers and, when used in an explosive manner, produce more power. This is especially clear when looking at the data from the sargent jump, which shows that the total weight moved in the few seconds it takes to jump up gives the jump much more power. Calculations
Equation used: 1-RM = lbs lifted/[100% - (# of reps x 2)] Overhead press: 1-RM = 40/(100%-(10 x 2) = 50 lbs Two arm curl: 1-RM = 30/(100%-(10 x 2) = 37.5 lbs Bench press: 1-RM = 65/(100%-(10 x 2) = 81.25 lbs Equation used: Power = force x distance/time Overhead press: 18.14 x 0.41/12.73 = 0.58 kgm/sec Two arm curl: 13.61 x 0.47/17.85 = 0.36 kgm/sec Bench press: 29.48 x 0.42/16 = 0.77 kgm/sec Data
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