The Effect of Different Periodization of Plyometric Training on Electrophysiological Adaptations of Leg Muscles in Male Athletes

Abstract

Background & Objectives: the purpose of present study was investigating an effect of different periodization of plyometric training on electrophysiological adaptations of leg muscles in male athletes. Material and Methods: thirty six male athletes volunteered to participate in this study. Pretest was including measurements of anthropometric variables and record electrical activity of leg muscles. Then, the participants divided into four groups include traditional, Daily undulating, weekly undulating and control groups. The Training program performed in 6 weeks with 3 sessions per week. 48 hours after the last training session posttest was performed. Between-group changes analyzed by ANCOVA statistical method and LSD post hoc test, as well as within-group changes analyzed by paired t-test. Results: Results of present study were indicated significant increases in neuromuscular activity of hamstring muscles, gastrocnemius and gluteus major muscles in the jump phase and hamstring and quadriceps muscles in the landing phase with all three periodization models of plyometric (p˂0.05). As well as, quadriceps to hamstring, quadriceps to gastrocnemius and quadriceps to gluteus coactivation ratio had a significant decreases with all periodization models (p˂0.05). There are no significant differences in coactivation ratio among plyometric training periodization models (p˃0.05). Conclusion: all three periodization models of plyometric training were improved in neuromuscular adaptations and there are no significant differences between periodization models. Therefore, total volume load of plyometric training is more important than the variation of training volume and intensity for improvement in neuromuscular adaptations.

Keywords: Training Periodization, Plyometric Training, Surface Electromyography, Neuromuscular Adaptation