Lab 5 Energy Olympics

i. Helpful table for calculating mass: Percentages of Total Body Weight Segment Males Females Average Head 8.26 8.2 8.23 Whole Trunk 55.1 53.2 54.15 Thorax 20.1 17.02 18.56 Abdomen 13.06 12.24 12.65 Pelvis 13.66 15.96 14.81 Total Arm 5.7 4.97 5.335 Upper Arm 3.25 2.9 3.075 Forearm 1.87 1.57 1.72 Hand 0.65 0.5 0.575 Forearm & Hand 2.52 2.07 2.295 Total Leg 16.68 18.43 17.555 Thigh 10.5 11.75 11.125 Leg 4.75 5.35 5.05 Foot 1.43 1.33 1.38 Leg & Foot 6.18 6.68 6.43 Table Data: Plagenhoef et al., 1983 Take data for each exercise and enter it into the table below. Different exercises can be done by different people or the same person can do each one. Perform each exercise for 20 seconds and see how many you can do. Or, take it easy if you prefer. Clean Up : o Lay meter stick and tape measure in the center of the row. o Make sure bathroom scale has been returned to the instructor’s bench in the front of the lab.

1 cookie= 53 calories* 4184 J = 221,752 J Calf raises (fastest) 20 repetitions= 1180 J 59 J per repetitions 221,752/59= 3759reps Most efficient would be to do sit-ups 221,752/235= 944 reps. 6) What are the possible sources of error in this experiment? Possible errors would be measuring incorrectly or measuring from the wrong body part. Another possible error could be having the wrong mass.