This randomized controlled study aimed to examine the effects of proprioceptive neuromuscular facilitation (PNF) stretching exercises on anaerobic power and motor performance in adolescent male volleyball players. Eighteen participants aged 15 to 17 years were randomly assigned to an experimental group and a control group. The experimental group performed PNF stretching exercises three times per week for six weeks, in addition to their regular volleyball training. The control group continued their standard volleyball training without PNF stretching. Outcome measures included anaerobic power, flexibility, balance, speed, push-up, and crunch tests. The study hypothesizes that PNF stretching will improve motor performance indicators in adolescent athletes.
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Anaerobic Power (Margaria-Kalamen Test)
Timeframe: Baseline and after 6-week intervention
Hamstring Flexibility (Sit-and-Reach Test)
Timeframe: Baseline and after 6-week intervention
Static Balance Performance
Timeframe: Baseline and after 6-week intervention
Sprint Performance (20-m Sprint Test)
Timeframe: Baseline and after 6-week intervention
Upper Body Endurance (Push-Up Test)
Timeframe: Baseline and after 6-week intervention
Core Endurance (Crunch Test)
Timeframe: Baseline and after 6-week intervention