Electromyographic Representation of Vastus Lateralis in Volleyball Players and its Relationship with Lower Limb Anthropometric Measurements
Introduction: Volleyball players rely heavily on their lower limb muscles to improve their performance. The purpose of this study is to link some anthropometric and physical characteristics to the vastus lateralis, a significant lower-limb muscle in trained volleyball players. Methods: This study included forty trained male volleyball players between the ages of 14 and 19, divided into three groups (14-15, 16-17, and 18-19). Anthropometry of the lower limbs, several physical performances, and electromyographic recordings of the vastus lateralis muscle using surface EMG (sEMG) were all measured. One-way Anova followed by post hoc (Scheffe) and Pearson’s correlation were performed by IBM SPSS v25. Results: There were significant differences in Lean Body Mass, Upper Leg length, Calf girth, Elastic Leg strength, Maximum Voluntary Contraction (MVC), and Muscle activity (RMS) (P<0.05) among the three groups. MVC and RMS of the vastus lateralis were significantly correlated with Calf girth and elastic leg strength (P<0.05). Furthermore, upper leg length was significantly correlated with both MVC and RMS (P<0.05). Conclusion: Volleyball is influenced by age and growth, as seen by larger stature, body mass, lean body mass, upper leg length, and elastic leg strength in players. Jumping ability is a critical aspect in volleyball performance, and it may be measured using elastic leg strength. Volleyball players' elastic leg strength improves in tandem with their vastus lateralis muscle activity.
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