Biomechanical upper-extremity performance tests and isokinetic shoulder strength in collision and contact athletes

The aim of this study was threefold (1) to assess the reliability three upper-extremity performance tests: a countermovement push up, press jump and drop box land, performed on set dual-force plates (2) examine whether there an association between isokinetic dynamometry tests in non-injured cohort collision/contact athletes (3) establish normal descriptive profile vertical ground reaction forces from tests, contact/collision athletes. split into two sub-sections; inter-day (n = 21) descriptive, correlation investigating relationship metrics 39). We used intraclass coefficients (absolute agreement, 2-way mixed-effects model) with 95% confidence intervals quantify all variables. Pearson investigate associations strength force asymmetry Inter-day moderate-to-excellent for (ICC 0.67–0.97). There no statistically significant external internal rotational peak torque variables CPMU, PJ BDL (r range .02–.24).These are reliable use male