Factorial and Construct Validity of Sit-Up Test of Different Durations to Assess Muscular Endurance of Police Students

Background: The number of completed sit-ups in a given period time is commonly used assessment to measure trunk endurance tactical populations. This study investigated factorial and construct validity three different durations sit-up test—30 s, 60 120 s; Methods: Anthropometric characteristics performed for 30, 60, s by101 (♂: n = 62 ♀: 39) police students were assessed. A analysis was determine if test group together one factor, correlation determined whether the tests associated with anthropometric measures variations duration correlated between each other, Fisher’s transformation these correlations differed significantly; Results: All loaded into factor both sexes, providing all durations. Anthropometrics lasting 30 males females. significantly stronger than test; Conclusions: seems have highest validity, as it not affected by anthropometrics, may be an optimal choice its lower risk back injuries. By applying results this study, agencies could reduce bias that occur during injury physical fitness assessment.