Electromyographic analysis & comparison of shoulder joint muscles during executing the tennis service in volleyball

The Purpose of the study was to “Electromyographic Analysis & Comparison of Shoulder Joint Muscles during Executing the Tennis Service in Volleyball”. Selection of Subjects: For the purpose of the study, 12 male national and inter university level volleyball players whose age between 16 to 28 years were selected purposively as subject for the present study. The purpose of the study was explained to the subjects and requested to put in their best effort during each attempt. Selection of Variables: Observations were made on the following Variables/contents. Anterior Group: Pectoralis Major (PMJ), Pectoralis Minor (PMN) & Biceps brachii (BB). Superior Group: Anterior Deltoid (AD), Middle Deltoid (MD) & Posterior Deltoid (PD). Posterior Group: Triceps brachii (TB), Latissimus Dorsi (LD) & Trapezius (TP). Criterion Measures: Muscles activities during jump tennis service in volleyball were measured by Neuro Trac Myo Plus 4. The data was recorded in micro volt (μv). Statistical Techniques: The concerned data was analyzed by using descriptive statistical and One way Analysis of Variance (ANOVA) in order to electromyographic analysis of shoulder function during executing the tennis service in Volleyball. The data was analyzed by using SPSS (Statistical Package for the Social Sciences) version 17. The level of significance for the entire analysis was set at the 0.05 level. Conclusions According to finding the study, Trapezius muscle showed the highest activation level of EMG during execution of tennis service in Volleyball. Anterior Deltoid & Posterior Deltoid muscles showed the 2nd & 3rd highest activation level of EMG during execution of tennis service in Volleyball. Triceps muscles showed the 4th highest activation level of EMG during execution of tennis service in Volleyball. Pectoralis muscles showed the 5th highest activation level of EMG during execution of tennis service in Volleyball. Biceps muscles function showed lowest activation level of EMG during execution of tennis service in Volleyball. Significant difference was found among the selected muscles during executing the tennis service in Volleyball i.e. Pectoralis, Trapezius, Biceps, Triceps, Anterior Deltoid & Posterior Deltoid.