Pedersen, Mette Merete3; Zebis, Mette Kreutzfeldt4; Langberg, Henning5; Poulsen, Otto Melchior3; Mortensen, Ole Steen3; Jensen, Jette Nygaard3; Sjøgaard, Gisela3; Bredahl, Thomas3; Andersen, Lars Louis3
1 Department of Public Health, Faculty of Health and Medical Sciences, Københavns Universitet2 Section of Social Medicine, Department of Public Health, Faculty of Health and Medical Sciences, Københavns Universitet3 unknown4 Institut for Idræt og Biomekanik5 Section of Social Medicine, Department of Public Health, Faculty of Health and Medical Sciences, Københavns Universitet
BACKGROUND: Continuous neck and shoulder pain is a common musculoskeletal complaint. Physical exercise can reduce pain symptoms, but compliance to exercise is a challenge. Exercise-specific self-efficacy has been found to be a predictor of participation in preplanned exercise. Little is known about the influence of exercise-specific self-efficacy on compliance to workplace physical exercise. PURPOSE: To determine the influence of exercise-specific self-efficacy on compliance to specific strength exercises during working hours for laboratory technicians. METHODS: We performed a cluster-randomized controlled trial, including laboratory technicians from two industrial production units in Copenhagen, Denmark. The participants were randomized to supervised specific strength exercises for the neck and shoulder muscles for 20 minutes three times a week (n¿=¿282) or to a reference group (n¿=¿255). The participants answered baseline and follow-up questions regarding self-efficacy and registered all exercises in a diary. RESULTS: Overall compliance to exercises was 45 %. Compliance in company A (private sector) differed significantly between the three self-efficacy groups after 20 weeks. The odds ratio of compliance was 2.37 for moderate versus low self-efficacy, and 2.93 for high versus low self-efficacy. No significant difference was found in company B (public sector) or in the intervention group as a whole. CONCLUSION: We did not find self-efficacy to be a general statistically significant predictor of compliance to exercises during 20 weeks, but found self-efficacy to be a predictor of compliance in a private sector setting. Workplace-specific differences might be present and should be taken into account.
International Journal of Behavioral Medicine, 2012, Vol 20, Issue 3, p. 365-370