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Figure 2

From: Measurement of muscle length-related electromyography activity of the hip flexor muscles to determine individual muscle contributions to the hip flexion torque

Figure 2

Relationship between normalised electromyographic activity and muscle length changes. 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 means and standard deviations. IL, iliopsoas; RF, rectus femoris; SA, sartorius; TFL, tensor fasciae latae.

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