6. Original Scientific Paper
Abstract

The application of the research findings in various fields of sports sciences had paved the way to the designing of training programs for the athletes and had given heartening results by improving the performances in almost all sports events. Still certain important areas, like analysis of the muscle involvement patterns in various sports skills have not been paid due attention. Due to the complexity of the skills involved in gymnastics, it is very difficult to analyze the muscle recruitment patterns and to know about which muscle was acting at a particular instant and also to what extent. The present endeavor had been undertaken with the aim to analyze the upper extremity muscles interactions during Forward Walkover activity on balancing beam using electromyographic (EMG) techniques and kinesiological concepts. EMG has a unique contribution in revealing what a muscle actually does at any given moment even during complex and fast occurring movements. Electromyographic (EMG) activities of eight superficial muscles from the upper extremity had been analyzed using a multichannel recorder (Sensormedics, R612, Netherlands). The signal conditioning was made through a coupler (Direct/Average EMG type 9852A), preamplifier (type 820), and amplifier (type 412). The muscles Triceps brachii lateral, Deltoid anterior and Deltoid middle were observed to be the main contributory muscles during the Forward Walkover activity on balancing beam. The moderate level of activation was exhibited by Deltoid posterior and Triceps brachii long muscle. However, the activation level of Brachioradialis, Flexor carpi radialis and Biceps brachii were observed to be comparatively lower. The sequential recruitment patterns of the muscles were also discussed. The findings likely to find utility for the sports scientists and coaches in the scientific orientation of the training schedules for the gymnasts.

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