The effects of shortening-induced torque depression on fatigue resistance in males and females

Residual torque depression (rTD) is the decrease in isometric torque following active shortening of skeletal muscle, compared to a purely isometric contraction performed at the same muscle length and level of activation. This study investigated performance fatigability in males and females during purely isometric (ISO) contractions and isometric contractions following active shortening (a rTD state). Recognized sex differences exhibited in the ISO state were lessened in the rTD state, demonstrating that sex-differences in fatigue resistance may be altered by history dependent properties.