Efektifitas Latihan Plyometric Terhadap Kekuatan Otot Kaki Dan Daya Tahan Lari Atlet Sepak Bola Pelajar
Mohamad Rifki Tegila · Indonesian Journal of Physical Education and Sport Science · 2026
Study
Purpose: .The primary
Objective: of this study is to investigate the effects of a structured plyometric training intervention on relative lower-limb muscular strength and estimated maximal oxygen uptake ($\text{VO}_2\text{max}$) in student soccer players.Specifically, this research seeks to determine whether systematic plyometric exercises can induce neuromuscular adaptations that enhance relative force production per unit of body mass, while concurrently evaluating their transfer effects on aerobic capacity
Materials and methods: .This study examined the effects of plyometric training on relative lower-limb strength and estimated VO₂max in student soccer players.Thirty athletes were screened, and 27 with complete pretest and posttest data were analyzed, comprising a plyometric group (n = 14) and a control group (n = 13).The plyometric group completed two progressive plyometric sessions per week for eight weeks in addition to routine soccer training.Relative lower-limb strength was calculated as the ratio of one-repetition maximum (1RM) back squat to body mass, whereas estimated VO₂max was obtained from the 20-m multistage shuttle run.
Results: .Baseline-adjusted ANCOVA was the primary inferential analysis, supported by Wilcoxon and Mann-Whitney tests.Relative lower-limb strength showed a significant adjusted between-group difference of 0.312 (95% CI 0.054 to 0.570), F(1,24) = 6.21, p = 0.020, ηp² = 0.206, and remained significant in the HC3 sensitivity analysis (p = 0.023).Estimated VO₂max also differed significantly by 3.97 mL•kg⁻¹•min⁻¹ (95% CI 2.88 to 5.07), F(1,24) = 55.90, p < 0.001, ηp² = 0.700.Absolute 1RM was not significant after adjustment (p = 0.095).
Conclusions: .A structured plyometric training program effectively enhances relative lower-limb strength in student soccer players, driven by neuromuscular adaptations and improved stretch-shortening cycle efficiency.Additionally, plyometric drills induce positive concurrent adaptations in estimated $\text{VO}_2\text{max}$, demonstrating that high-intensity explosive training supports aerobic conditioning without blunting cardiovascular performance.Consequently, incorporating systematic plyometric exercises into youth soccer regimens serves as a time-efficient strategy to concurrently optimize relative muscular power and sport-specific endurance.