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Peak torque responses at three joints for nine subjects during five different conditions: combined hip and knee extension (CHKE), hip extension movement with knee extended (HEKE), hip extension movement with knee flexed (HEKF), knee extension movement with hip extended (KEHE), and knee extension movement with hip flexed (KEHF). Data represent mean ± standard deviation for nine subjects, three trials per subject. Positive direction of torques was (a) hip extension, (b) knee extension, and (c) ankle plantar flexion. *Significant difference (p < 0.05). Ming Wu, PhD; et.al