Using the formula listed below, calculate the target body weight of a female soccer player currently weighing 134 lb with a 18% body fat. Her goal is 15% body fat. Target body weight = Current FFM / 1 - desired % BF

Question

Quizplus · Accepted Answer

1. Calculate her current Fat Mass (FM): 
FM = Current weight x Current %BF / 100 
FM = 134 x 18 / 100 = 24.12 lb 
2. Calculate her current Fat-Free Mass (FFM): 
FFM = Current weight - Current FM 
FFM = 134 - 24.12 = 109.88 lb 
3. Calculate her target FFMI (Fat-Free Mass Index): 
Target FFMI = (Current FFM) / (1 - Desired %BF) 
Target FFMI = 109.88 / (1 - 0.15) = 129.33 lb 
4. Calculate her target body weight: 
Target body weight = Target FFMI + Target FM 
Target body weight = 129.33 + (129.33 x 0.15 / 0.85) 
Target body weight = 129.33 + 22.88 = 152.21 lb

Rounding to the nearest integer gives us: 129 lb. Therefore, the answer is C (129).

Using the Formula Listed Below, Calculate the Target Body Weight