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SHOULDER MUSCLE STRENGTH, PROPRIOCEPTION AND VIBRATORY SENSATION ASYMMETRY AMONG OFFICE WORKERS
MSc. PT. Ozde Depreli* and Prof. Dr. PT. Zafer Erden
Shoulder-related disease complaints constitute a major health problem in the working population. In line with this, this study was conducted for between the extremities comparison of the shoulder muscle strength, proprioception, and vibration sense of the 35 female individuals who work at a desk for a long time. Shoulder muscle strength was measured with a hand-held dynamometer. Proprioception were determined with an isokinetic (Cybex Humac Norm) dynamometer. Vibration sense evaluation was performed with a Vibrometer-VPT (Diabetic Foot Care, India) device. While all parts (anterior, middle and posterior) of deltoid muscle (p=0,022, p=0,018, p=0,016) serratus anterior (p= 0,006), infraspinatus (p=0,000), subscapularis (p=0,002), and latissimus dorsi muscles (p=0,033) were found to be significantly different, no significant difference was found in all parts (upper, middle and lower) of trapezius muscle, supraspinatus, and pectoralis major-minor muscle (p>0,05). In some of the proprioception parameters, angular error in the dominant extremity was determined to be statistically significantly higher (p<0,05). While there was no significant difference in the vibration detection threshold on the acromion (p>0,05), a statistically significant difference was observed on the coracoid process (p=0,005). In this study, only female individuals were included to maintain homogeneity, and asymmetry was detected in the important muscles of the shoulder region, proprioception, and vibration senses. In future studies, more detailed evaluations should be made in a more heterogeneous group, and exercise and rehabilitation programs should be planned to reduce shoulder asymmetry and prevent overuse injuries in office workers.[Full Text Article]