Effect of Rounded and Hunched Shoulder Postures on Myotonometric Measurements of Upper Body Muscles in Sedentary Workers

Background: Shoulder pain is prominent among sedentary employees who make motions of the upper limbs on a regular basis. Rounded shoulder posture (RSP) and hunched (HSP) are most common clinical postural misalignments. These causes spine to bend raise tension nerve roots, which has negative impact upper-extremity muscular strength function. Therefore, this study was carried out investigate effect RSP HSP mechanical parameters body muscles in clinically asymptomatic workers. Methods: Twenty office workers with RSP, 20 HSP, normal (NSP) were matched for age, BMI, type job. Volunteers split into groups based photometric angle measurements. Mechanical properties such as muscle tone, stiffness, elasticity trapezius, middle posterior deltoid, pectoralis major assessed postures. Results: The revealed significant decrease tone increase stiffness poster deltoid both compared NSP. Specifically, decreased from 20.1 ± 4.0 12.4 3.1 Hz (38.3%), (p ≤ 0.001) 14.0 4.8 (30.3%), HSP. Muscle increased 309.9 70.7 348.15 68.7 N/m (11%), 441.7 45.9 (29.8%), Conclusions: have an healthy postures, basis, may affect physical health workers’ productivity. In addition, it recommended take breaks attend training that could help improve their health.