The Effect of Plyometric Training Versus Combined Plyometric and Core Training on Autonomic Regulation and Muscle Oxygenation During Incremental Resistance Exercise in Collegiate Athletes
DOI:
https://doi.org/10.17309/tmfv.2026.3.17Keywords:
plyometric training, core stability, heart rate variability, muscle oxygenation, near-infrared spectroscopy, resistance exercise, autonomic regulationAbstract
Objectives. This study aimed to compare the effects of plyometric training (PT) and combined plyometric plus core training (PT+CT) on autonomic nervous system regulation and local muscle oxygenation during resistance exercise in collegiate athletes. Specifically, changes in heart rate variability (HRV), muscle oxygen saturation (SmO₂), and performance parameters were examined following a 10-week intervention.
Materials and Methods. A three-arm, parallel-group, assessor-blinded randomized controlled trial was conducted with 45 collegiate athletes (aged 19–24 years) from volleyball, soccer, and basketball backgrounds. Participants were randomly assigned to PT (n = 15), PT+CT (n = 15), or a control group (CON; n = 15). The PT group performed progressive plyometric exercises, while the PT+CT group completed identical plyometric training supplemented with structured core exercises, three sessions per week for 10 weeks. The CON group continued sport-specific training only. Primary outcomes included resting and post-exercise HRV indices (RMSSD, SDNN, HF power, LF/HF ratio) and SmO₂ measured via near-infrared spectroscopy during incremental back squat at 60%, 70%, and 80% of 1-RM. Secondary outcomes included maximal strength, jump performance, blood lactate, and perceived exertion.
Results. Forty-two participants completed the study. Both PT and PT+CT groups showed significantly greater improvements in 1-RM back squat compared with CON (P < .001). The PT+CT group demonstrated superior increases in resting RMSSD compared with PT (P = .008) and CON (P < .001). During high-intensity exercise (80% 1-RM), SmO₂ was significantly higher in PT+CT than in both PT and CON (P ≤ .01). Post-exercise HF power was better preserved in PT+CT than CON (P = .003). Additionally, countermovement jump performance improved more in PT+CT than PT (P = .04) and CON (P < .001), with no significant differences observed in blood lactate or RPE.
Conclusions. The findings confirm that combined plyometric and core training elicits superior improvements in autonomic regulation and muscle oxygenation compared to plyometric training alone, supporting its integration into resistance-based conditioning programs for enhanced physiological and performance adaptations.
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Copyright (c) 2026 Dhanasekaran Chandrasekaran, Sundar Raj Narsing Raj, Vedan Shatish Raj Kannan Baba, Kiran Kumar Nagaraj, Uma Palanisamy, Farjana Akter Boby, Yuni Astuti, Josyula Tejaswi

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