Fat-Free Mass Index in NCAA Division I and II Collegiate American Football Players

Clinical Summary of Trexler JSCR 2017.

The purpose of this study was to characterize Fat-free Mass Index (FFMI) in collegiate American football players and to determine if FFMI varies with different position, division or age groups. According to earlier research FFMI is a height-adjusted assessment of fat-free mass (FFM), which is derived by dividing FFM (in kilograms) by height (in square meters). Further research suggested a natural upper limit of 25 kg·m2 in resistance trained male athletes. At first FFMI was used as a diagnostic value to identify protein-energy malnutrition in those
with low FFM but now it is believed that this value may have valuable applications to a variety of sports. It is believed that FFMI may assist in distinguishing interposition differences comparable to metrics like weight, body mass index, and body fat percentage but may relate more directly to the ability of a player for strength and power.


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