Table 3. Optimal angle (degree, 0° – full knee extension) for knee flexion and knee extension. Data are average (±SD). Knee flexion Knee extension 60°/s 240°/s 450°/s 60°/s 240°/s 450°/s Pre Post Pre Post Pre Post Pre Post Pre Post Pre Post RT 46(5) 44(4) 61(3) 57(4) 74(2) 73(2) 63(2) 66(4) 65(5) 70(7) 59(4) 59(4) RTC 54(4) 51(6) 55(6) 53(4) 80(3) 83(8) 65(6) 64(6) 75(9) 76(10) 59(5) 59(4) HVR 52(9) 50(7) 60(12) 55(9) 80(8) 76(8) 67(6) 66(7) 77(9) 77(11) 62(6) 61(5) P <.029 * <.004 * <.011 # None None None # Interaction RT, resistance training group, which performed high-load, low-velocity concentric–eccentric hamstring actions; RTC, resistance training concentric group, which performed high-load, low-velocity concentric-only hamstring actions; and HVT, high-velocity elastic band training. * Time