Effects of Hand Position with Relation to Elbow and Shoulder Position on Maximum Grip Strength

Abstract

This study aimed at determining the grip strength at various angles of shoulder and elbow positions and associate them with discomfort at each point. Method: 60 right handed male subjects aged 20-35 years were taken to measure grip strength at shoulder forward flexion at 0°,45°,90°,135°,180° with elbow at 0° and 90° flexion; discomfort was measured with a VAS scale. Result: scores of grip strength: minimum at 90° elbow and 180° shoulder and maximum at 0° elbow and 180o shoulder. VAS score: the maximum at 0° elbow and 135° shoulder and minimum at 0° elbow and 0° shoulder. Conclusion: there exists a relation between grip strength and discomfort.