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Journal of Occupational & Environmental Medicine:
doi: 10.1097/JOM.0b013e318266482d
Original Articles

Work Environment and Psychosocial Factors Affecting Physical Activity Among Taiwanese Information Technology Professionals: A Structural Equation Modeling Approach

Lin, Yun-Ping PhD; Kao, Tsui-Sui Annie PhD; McCullagh, Marjorie C. PhD; Edington, Dee W. PhD; Larson, Janet L. PhD

Continued Medical Education
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Objective: To examine the relationships among work environment, psychosocial factors, and physical activity (PA) among information technology (IT) professionals.

Methods: This was a cross-sectional survey of 576 IT professionals from three IT companies in Taiwan. Structural equation modeling was used to test a theoretically supported model using social cognitive theory, incorporating variables from the demand–control model.

Results: Higher levels of PA were positively associated with supportive workplace environments, positive outcome expectations, and self-efficacy for PA. Self-efficacy partially mediated the effects of supportive workplace environments on PA. Job strain had an indirect effect on PA through self-efficacy. The final model accounted for 31% of the variance in PA.

Conclusions: Work environment and psychosocial factors are both important. Workplace PA interventions directed toward individuals' self-efficacy and outcome expectations in the context of supportive environments may be useful.

©2012The American College of Occupational and Environmental Medicine


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