Changes in Iliopsoas Muscle Activity and Hip/Pelvic Kinematics With Variations in Step Length and Cadence at a Fixed Walking Speed

The findings suggest that step length and cadence influence the timing and magnitude of iliopsoas activation. Longer steps increase activation during the late swing phase, while a higher cadence enhances activation during stance. Phase-specific training targeting iliopsoas strength and hip flexion mobility may help improve gait performance.