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BioMed Research International
Volume 2017, Article ID 7914134, 9 pages
Clinical Study

Intelligent Physical Exercise Training in a Workplace Setting Improves Muscle Strength and Musculoskeletal Pain: A Randomized Controlled Trial

Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark

Correspondence should be addressed to Tina Dalager; kd.uds.htlaeh@regaladt

Received 27 January 2017; Revised 12 May 2017; Accepted 20 June 2017; Published 7 August 2017

Academic Editor: James Steele

Copyright © 2017 Tina Dalager et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Purpose. To assess effects of 1-year Intelligent Physical Exercise Training (IPET) on musculoskeletal health. Methods. Office workers were randomized 1 : 1 to a training group, TG (), or a control group, CG (). TG received 1 h supervised high intensity IPET every week within working hours for 1 year and was recommended to perform 30 min of moderate intensity physical activity for 6 days a week during leisure. The IPET program was based on baseline health measures. Results. No baseline differences were present. An intention-to-treat analysis showed significant between-group effect for muscle strength but not for musculoskeletal pain. However, a per-protocol analysis of those with an adherence of ≥70% demonstrated a significant between-group effect for neck pain during the past three months. Several significant within-group changes were present, where TG and TG ≥ 70% demonstrated clinically relevant pain reductions whereas minimal reductions were seen for CG. Conclusion. IPET and recommendations of moderate intensity physical activity demonstrated significant between-group effect on muscle strength. Interestingly, significant within-group reductions in musculoskeletal pain were seen not only in TG but also in CG. This may underlie the lack of such between-group effect and shows that a possible positive side effect of merely drawing attention can improve musculoskeletal health.