Trunk muscle endurance in individuals with and without patellofemoral pain: Sex differences and correlations with performance tests

To compare trunk muscle endurance among females and males with and without patellofemoral pain (PFP), and to investigate the correlations between trunk muscle endurance and performance of the single leg hop test (SLHT) and forward step-down test (FSDT). Cross-sectional. Laboratory-based study. 110 females and 38 males with PFP, 61 females and 31males without PFP. Anterior and lateral trunk muscle endurance were assessed with the prone and bilateral side-bridge tests, respectively. Performance during the SLHT and FSDT was also assessed. Lower anterior and lateral trunk muscle endurance were identified in females (p