Limited research exists on how various resistance training methods, such as TRX and dumbbells, impact sport-specific technical skills and muscle performance in young athletes.
OBJECTIVE:
This study aimed to compare the effects of 8-week Total-Body Resistance Exercise (TRX) suspension training and Traditional Dumbbell Training (TDT) on shoulder muscle strength, leg power, and spike speed in young male volleyball players.
METHODS:
Twenty-five male volleyball players were randomly assigned to either the TRX suspension group ( 13) or the TDT group ( 12). Anthropometric measures, countermovement jump (CMJ) height, spike speed, and shoulder joint isokinetic strength tests were conducted pre- and post-intervention. Both groups continued their volleyball training (5 days/week) and added TRX or TDT sessions for 2 months (60–90 minutes/day, 3 times/week), including 8 multi-joint exercises (1–3 sets/12 reps, 60 min rest). Statistical analysis involved Mann-Whitney and Wilcoxon tests, with effect size calculations.
RESULTS:
Compared to the TDT group, the TRX group showed significant improvements in CMJ height (12.17% vs. 0.83%; 0.001), CMJ power (9.55% vs. 0.24 %; 0.01), and spike speed (11.49% vs. 6.82%; 0.03) with a small to moderate effect size.
CONCLUSIONS:
In young male volleyball players, TRX suspension training may be more effective than dumbbell training in enhancing jump performance and spike speed.
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