Background: Teaching staff at universities often practice postures that can cause musculoskeletal problems, usually in the neck, shoulders, and lower back. Upper limb pain and musculoskeletal discomfort are very common.

Purpose: This study was conducted to show the correlation between shoulder torque of internal and external rotation and strength of hand grip and to determine the best position in measuring shoulder peak torque among university teaching staff. Methods: Fifty-one university teaching staff members of both genders were chosen for this study from the Faculty of Physical Therapy at Misr University for Science and Technology. They worked an average of seven hours a day, were between the ages of 25 and 45, and had a BMI of 18 to 25 kg/m². Participants who performed overhead teaching activities for more than 2 hours daily for at least 1 year were assigned into one group. The Jamar Hydraulic Hand Dynamometer was used to assess grip strength, and isokinetic dynamometry was used to measure shoulder rotation torque.

Results: Right external rotator torque increased significantly at 90 degrees shoulder abduction as opposed to 45 degrees shoulder abduction (p = 0.001). When comparing 90 degrees shoulder abduction to 45 degrees shoulder abduction, there was a substantial increase in left external rotator torque (p = 0.01). On the right side there was no discernible difference in internal rotator torque between 45 degrees and 90 degrees abduction (p = 0.07). On the left side there was no discernible difference in internal rotator torque between 90 and 45 degrees abduction (p = 0.65).