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

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 0º,45º,90º,135º,180º with elbow at 0º and 90º flexion; discomfort was measured with a VAS scale. Result: scores of grip strength: minimum at 90º elbow and 180º shoulder and maximum at 0º elbow and 180º shoulder. VAS score: the maximum at 0 º elbow and 135 º shoulder and minimum at 0º elbow and 0º shoulder. Conclusion: there exists a relation between grip strength and discomfort.