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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

Journal of Occupational and Environmental Medicine: September 2012 - Volume 54 - Issue 9 - p 1092–1100
doi: 10.1097/JOM.0b013e318266482d
Original Articles

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.

From the School of Nursing (Dr Lin), China Medical University, Taichung, Taiwan; and School of Nursing (Drs Kao, McCullagh, and Larson) and School of Kinesiology and Health Management Research Center (Dr Edington), University of Michigan, Ann Arbor, Mich.

Address correspondence to: Yun-Ping Lin, PhD, No. 91, Hsueh-Shih Rd, Taichung 40402, Taiwan (

The first author received funding from the American Association of Occupational Health Nurses Foundation's New Investigator Research Grant; the Midwest Nursing Research Society Dissertation Research Grant; Sigma Theta Tau International, Rho Chapter Research Grant; and the University of Michigan Rackham Graduate Student Research Grant.

Authors Lin, Kao, McCullagh, Edington, and Larson have no relationships/conditions/circumstances that present potential conflict of interest.

The JOEM Editorial Board and planners have no financial interest related to this research.

The content is solely the responsibility of the authors and does not necessarily represent the official views of the funding agencies.

Copyright © 2012 by the American College of Occupational and Environmental Medicine