Using the formula listed below, calculate the target body weight of a female soccer player currently weighing 134 lb and having 18% body fat but wishing to be 15% body fat. Assume that all weight lost is stored fat. Target body weight = Current weight of fat-free mass (lb)/ 1 - desired % body fat

Question

Quizplus · Accepted Answer

Step 1: Calculate the fat-free mass (FFM):
FFM = body weight - (body weight x % body fat)
FFM = 134 - (134 x 0.18) = 109.88 lb

Step 2: Calculate the target FFM:
Target FFM = current weight of FFM / (1 - desired % body fat)
Target FFM = 109.88 / (1 - 0.15) = 129.27 lb

Step 3: Calculate the target body weight:
Target body weight = Target FFM + (Target FFM x desired % body fat)
Target body weight = 129.27 + (129.27 x 0.15) = 148.67 lb

Therefore, the target body weight of the female soccer player is approximately 129 lb (rounded to the nearest whole number), which is answer choice C.

Using the Formula Listed Below, Calculate the Target Body Weight