Author: Levanon Yafa Gefen Amit Lerman Yehuda Givon Uri Ratzon Navah Z.
Publisher: Taylor & Francis Ltd
ISSN: 1366-5847
Source: Ergonomics, Vol.55, Iss.12, 2012-12, pp. : 1571-1585
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Abstract
Typing is associated with musculoskeletal disorders (MSDs) caused by multiple risk factors. This control study aimed to evaluate the efficacy of a workplace intervention for reducing MSDs among computer workers. Sixty-six subjects with and without MSD were assigned consecutively to one of three groups: ergonomics intervention (work site and body posture adjustments, muscle activity training and exercises) accompanied with biofeedback training, the same ergonomics intervention without biofeedback and a control group. Evaluation of MSDs, body posture, psychosocial status, upper extremity (UE) kinematics and muscle surface electromyography were carried out before and after the intervention in the workplace and the motion lab. Our main hypothesis that significant differences in the reduction of MSDs will exist between subjects in the study groups and controls was confirmed (χ2 = 13.3;
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