Parameters characterizing torque-angle (Tθ) and torque-angular velocity (Tω) data (mean±between-subjects standard deviation).

aOne outlier is excluded.bSignificant main effects and interactions for age (A), gender (G), and muscle (M).DF, PF: dorsiflexors, plantarflexors.T0: maximal isometric joint torque.θ0: ankle angle at T0 (DF = Negative; PF = Positive).ATω, BTω: shape coefficients for Tω relation; units for BTω are rad/s.TECC: eccentric plateau of Tω relation (relative to T0).