469: Running Cadence and Acute Cartilage Response

Increasing running cadence by 10% does not significantly alter acute knee cartilage deformation in trained runners, despite reducing peak patellofemoral joint stress per step. While higher cadence decreases individual step-loading, it simultaneously increases the total number of loading cycles, potentially neutralizing the benefits for cartilage health. Research indicates that habitual running biomechanics, specifically higher peak patellofemoral joint stress, correlate positively with greater resting cartilage thickness, suggesting a potential adaptive response to chronic loading. These findings challenge the assumption that increasing cadence is a universally protective strategy for knee cartilage, highlighting the importance of recovery and individual conditioning over simple biomechanical adjustments. The study, involving runners aged 18 to 35, underscores the complexity of joint health and the limitations of current modeling in predicting tissue-specific responses to exercise.