This study aimed to identify the effect of stretch–shortening cycle (SSC) training on the muscular power of the legs in volleyball players through three different training patterns: unilateral performance (single-leg), bilateral performance (double-leg), and a combined pattern integrating both unilateral and bilateral performance. The study also sought to determine which of these methods is most effective.
The study was conducted on a sample of 24 volleyball players, divided into three experimental groups. All groups followed a training program for 14 weeks, including 4 weeks of weight training followed by 10 weeks of SSC training (“stretch–shortening cycle”). Pre- and post-tests were conducted using the following measurements: vertical jump from a standing position, vertical jump with movement, and standing broad jump.
Data were collected through direct measurement and analyzed statistically. The results showed:
All three training methods had a positive effect on improving leg muscular power.
The unilateral (single-leg) training method showed superior results compared to the other methods in improving vertical jump (with movement) and standing broad jump performance.
No significant differences were found between unilateral and bilateral methods in the vertical jump from standing position, while both were superior to the combined method.
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