Allometrically adjusted isokinetic leg extension torque of adults in relation to body mass

Abstract

The purpose of the study was to examine the isokinetic leg extension torque of adult participants using allometric scaling to account for differences in body mass. 10 men (23.1y, 1.72m & 64.5kg) and nine women (20.7y, 1.62m & 52.1kg) participated in the study. Peak isokinetic leg extension torque at 1.02, 3.12 and 5.20 rad•s-1 were determined using a Cybex 6000 isokinetic dynamometer. Torque at 1.04 rad•s-1 was significantly higher than torque at 3.12 rad•s-1 and 5.20 rad•s-1 in men and women. Torque in newton.metre in men were 162.5, 167.3 and 151.3% but were reduced to 130.2, 126.2 and 121.8% that of women when the data were allometrically scaled to body massb=0.89, 1.13 & 0.97. Common identified b exponents between torque and body mass included b=1.0 within the 95% confidence intervals, as predicted by geometric similarity theory.