Journal of Global Humanities and Social Sciences 2737-5374 2737-5382 BONI FUTURE DIGITAL PUBLISHING CO.,LIMITED https://ojs.bonfuturepress.com/index.php/GHSS/article/view/2041 7 4 2026 2026-08-21 A Study on the Correlation Between CMJ and IMTP Biomechanical Indicators and 100-Meter Specialized Performance in Adolescent Swimmers Lina Xiao Objective: To investigate the correlation between biomechanical indicators of the counter-movement jump (CMJ) and isometric mid-thigh pull (IMTP) and 100-meter times in four swimming strokes among adolescents, and to identify key predictive variables. Methods: Key CMJ and IMTP indicators, together with 100-meter times, were measured in 64 adolescent swimmers divided into four groups according to their primary stroke. Pearson/Spearman correlation, partial correlation, and multiple stepwise regression were supplemented by Bootstrap resampling and FDR correction. Results: 1. Jump height (JH) was significantly negatively correlated with performance in all groups (r = -0.62 to -0.79), and the association remained significant after controlling for body size; 2. Correlations for IMTP relative peak force and early rate of force development (RFD) were generally stronger than those for absolute force and later RFD windows; 3. RSI-mod showed relatively strong correlations in the butterfly and breaststroke groups, second only to JH; 4. A combined JH and relative peak force model explained 52%-68% of the variance in performance across the four strokes. Conclusion: CMJ and IMTP are effective measures of lower-body strength, with JH, RSI-mod, relative peak force, and early RFD serving as key indicators of 100-meter performance. counter-movement jump,isometric mid-thigh pull,rate of force development,adolescent swimmers,short-distance swimming 10.61360/BoniGHSS262020410405

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