TOTAL AND LOWER EXTREMITY LEAN MASS PERCENTAGE POSITIVELY CORRELATES WITH JUMP PERFORMANCE

Abstract

The current study investigated the relationship between the lower extremity and total body lean mass percentages and the peak vertical ground reaction force (VGRF), peak power, and jump height (JH) in a countermovement jump (CMJ). One hundred and two subjects diverse in age and fitness level underwent Dual Energy X-ray Absorptiometry to determine mass composition and then performed three countermovement jumps which were used to calculate peak VGRF, peak power, and JH; the first two normalized to subject bodyweight. Pearson correlation tests between lean mass percentage and jump performance indicated significant positive correlations (r > 0.56), which were consistent with previous literature. However, as not all variance in CMJ measures was accounted for by lean mass percentage, other variables should be taken into account.