Indian Journal of Physiotherapy & Occupational Therapy-An International Journal

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Efficacy of Hand Grip Strength on Supraspinatus Muscle Activity in Patients with Shoulder Impingement Syndrome


Affiliations
1 Cairo University, Egypt
2 Zagazig University, Egypt
     

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Objective: To assess the effect of applying of 50% of maximum voluntary contraction of hand grip strength on the EMG activity of the supraspinatus muscle in patients with shoulder impingement syndrome.

Design: pretest-post test study.

Setting: Out-patient clinic, Faculty of Medicine, Zagazig University.

Subjects: Thirty patients participated in this study. Their age ranged from 25 to 40 years.

Main measures: EMG activity of supraspinatus muscle was assessed without and with applying 50% of maximum voluntary contraction (MVC) of the hand grip in 30, 60 and 90 degrees of shoulder abduction.

Results: A Significant positive differences were found between the amplitudes of the supraspinatus activity without and with gripping in 30°, 60° and 90° degrees of shoulder abduction indicating that hand gripping resulted in an increase in the muscle activity with p<0.0001. Conclusion: Applying of 50% MVC of hand grip strength could increase the activity of the supraspinatus muscle in patients with shoulder impingement syndrome. This could help in the rehabilitation strategies for such patients.


Keywords

Subacromial Impingement Syndrome - Electromyographic Activity-Supraspinatus Muscle
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  • Efficacy of Hand Grip Strength on Supraspinatus Muscle Activity in Patients with Shoulder Impingement Syndrome

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Authors

Magdolin M. S. S. Shenouda
Cairo University, Egypt
Mervat A. El-Tokhy
Zagazig University, Egypt

Abstract


Objective: To assess the effect of applying of 50% of maximum voluntary contraction of hand grip strength on the EMG activity of the supraspinatus muscle in patients with shoulder impingement syndrome.

Design: pretest-post test study.

Setting: Out-patient clinic, Faculty of Medicine, Zagazig University.

Subjects: Thirty patients participated in this study. Their age ranged from 25 to 40 years.

Main measures: EMG activity of supraspinatus muscle was assessed without and with applying 50% of maximum voluntary contraction (MVC) of the hand grip in 30, 60 and 90 degrees of shoulder abduction.

Results: A Significant positive differences were found between the amplitudes of the supraspinatus activity without and with gripping in 30°, 60° and 90° degrees of shoulder abduction indicating that hand gripping resulted in an increase in the muscle activity with p<0.0001. Conclusion: Applying of 50% MVC of hand grip strength could increase the activity of the supraspinatus muscle in patients with shoulder impingement syndrome. This could help in the rehabilitation strategies for such patients.


Keywords


Subacromial Impingement Syndrome - Electromyographic Activity-Supraspinatus Muscle

References