Jump Rope Training and Shoulder Isokinetics in CrossFit

The goal of this quasi-experimental clinical trial is to evaluate whether weighted jump rope (WJR) training can improve the isokinetic shoulder strength profile in male and female CrossFit practitioners. The main questions it aims to answer are: * Does six weeks of WJR training affect internal and external shoulder rotational peak torque relative to body mass? * Does WJR influence the external/internal shoulder rotation ratio in dominant and non-dominant arms at varying angular velocities? Researchers will compare pre- and post-intervention isokinetic measurements to see if WJR training leads to significant changes in shoulder strength and balance. Participants will: * Incorporate WJR sessions three times per week into their usual CrossFit training. * Undergo isokinetic testing of both shoulders at baseline and post-intervention at 60°/s, 180°/s, and 300°/s. * Have their training adherence and technique monitored throughout the study.