Figure 1.

Hip flexion torque and electromyography during isometric contraction. (a) Maximum voluntary hip flexion torque during isometric contraction at four hip joint angles. Values are presented as mean ± standard deviation. *p <0.05 vs. 0° (b) Normalised electromyographic activity at four hip joint angles. The average root mean square (RMS) values for maximum voluntary contraction at four hip joint angles were normalised by the RMS value at a hip joint angle of 0°. Values are presented as mean ± standard deviation. *p <0.05 vs. 0° IL, iliopsoas; RF, rectus femoris; SA, sartorius; TFL, tensor fasciae latae.