ELECTROMYOGRAPHIC ANALYSIS OF ANTERIOR, SUPERIOR AND POSTERIOR SHOULDER FUNCTION WHILE EXECUTING THE SPIKE IN VOLLEYBALL

Abstract

This research aims to study the Electromyographic analysis of anterior, superior and posterior shoulder function while executing the spike in volleyball. Twelve male national and inter university level volleyball players, ranging from age 16 to 28 years, were purposively selected as subjects. The subjects were oriented for experiment and process was clarified to them. Observations were made on selected variables such as anterior muscles group includes Pectoralis Major (PMJ), Pectoralis Minor (PMN) and Bicepsbrachii (BB). Further superior muscle group includes Anterior Deltoid (AD), Middle Deltoid (MD) and Posterior Deltoid (PD). Posterior muscle group includes Triceps Brachii (TB), Latissimus Dorsi (LD) and Trapezius (TP). The muscles activities during spiking were tested by Neuro TracMyoPlus 4, as criterion measure. Micro volt (µv) was used to document scores/data, and further analysis of data was completed by help of SPSS version 17. The descriptive statistics was used for electromyographic analysis of shoulder function while executing the spike. Pearson Correlation technique was applied, having 0.05 level of significance to see the relationship of selected muscles with spiking action. The findings depicted that while spike the trapezius muscle has highest activation level of EMG, followed by anterior deltoid & posterior deltoid; triceps muscles; pectoralis muscles in order of sequence. In contrast the biceps muscles function showed lowest activation level of EMG while carrying out of spike. The Pectoralis is the only muscle that was found correlated with the performance of spike. However, The insignificant correlation was found between the trapezius, biceps, triceps, anterior deltoid & posterior deltoid with the performance of spike test. However, significant relationship was also found between biceps and triceps muscles groups among independent variables.