The goal of this clinical trial is to compare two ways of scheduling plyometric training in rope-skipping athletes. The study will examine whether short and frequent training sessions have different effects on lower-limb muscle function, rope-skipping performance, and perceived fatigue compared with longer training sessions performed less often.

Approximately 60 rope-skipping athletes will be randomly assigned to one of two groups. Both groups will continue their regular rope-skipping training and complete an additional 8-week plyometric training program. One group will perform short plyometric training sessions five days per week. The other group will perform concentrated plyometric training sessions twice per week. The exercise content, weekly training volume, and training progression will be kept as similar as possible between the two groups.

Researchers will assess lower-limb muscle function and rope-skipping-specific performance before and after the intervention. Training attendance, completion, perceived exertion, muscle soreness, and adverse events will also be recorded. The study aims to determine whether distributing plyometric training across more frequent and shorter sessions produces different training effects from concentrating the training into fewer sessions.