Evaluation of isometric rotator cuff strength variation among healthy individuals using isometric strength testing device - A cross sectional Study

Abstract

Background: The study is based on measurement of isometric strength of rotator cuff muscles in healthy individuals with age of 40years and above. As mechanical force generated by these muscles is easily measurable, the pathology of these muscles might be identified by assessment of the isometric strengths of these muscles. For assessing the isometric strength, we used isometric strength testing device which has an adjustable dynamometer shaft & one weight sensor which determines force generated by the respective muscle group in kilograms. Method: it was an observational study with six months duration A total of 50 healthy adult volunteers compromised of 26 males & 24 females were included, maximal isometric force is measured at standardized positions for supraspinatus, and subscapularis in both dominant and non-dominant shoulders, using isometric strength testing device. Result: Isometric strength of subsccapularis muscle when compared between dominant & Non dominant side there was significant difference observed. And the mean was(0.5479). the average isometric strength of Supraspinatus muscle when compared between both dominant & non dominant side there was a significant difference found the mean was(0.2417) p value was < 0.0001 which shows significant difference. Conclusion: the study concludes that there was minimal isometric strength variation for supraspinatus muscle while there was much difference found for subscapularis muscle.