Effects of running distance on per-step and cumulative lower-extremity loading during a simulated treadmill half marathon

As the running distance increases, the running mechanism is significantly altered. The cumulative loading on the knee and hip significantly increased, indicating a shift in the compensatory mechanism from the proximal to the distal joint. Cumulative loading on the AT and PFJ increased with the accumulated running distance, which directly reflects that prolonged running might cause greater cumulative loading on the lower extremity.