Force–Time Characteristics of Dynamic and Isometric Muscle Actions: Association with Muscle Architecture in Female Athletes

The association between force–time characteristics of isometric leg press (ILP) and countermovement jump (CMJ) with vastus lateralis (VL) muscle architecture, was examined in 19 female athletes (aged 23.2 ± 5.4 years). Peak force (PF), average rate development (ARFD) (RFD) at different time epochs were calculated from the curve, as well CMJ height power. Significant correlations found ILP-PF power (r = 0.658, p < 0.01), while both variables correlated VL thickness fascicle length 0.471 to 0.648, 0.05). also observed ILP-RFD 0.565 0.646, 0.05) 0.523, Furthermore, positive ILP ARFD 0.625, 0.01) RFD 0.464 0.566, accounted for 52.8% (p 0.002) variance These results suggest that are associated generation during dynamic actions. rapid production athletes, irrespective type action.