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Effects of 12 months aerobic exercise intervention on work ability, need for recovery, productivity and rating of exertion among cleaners

Tidsskriftartikel - 2017

Resume

PURPOSE: This study assessed the effects of a worksite aerobic exercise intervention among cleaners on: work ability, need for recovery, productivity, and rating of exertion.

METHODS: In a monocentric randomised controlled trial in Denmark, 116, of 250 invited, cleaners were cluster-randomised (work location; sex; age; length of service) to aerobic exercise [N = 57, 44.9 years, 75.4% female, body mass index (BMI) 26.2], receiving 2 weekly aerobic exercise sessions during 12 months, or a reference group (N = 59, 45.7 years, 76.3% female, BMI 27.1), receiving health-promoting lectures. Self-reported data on outcomes and sociodemographic information were collected at baseline, and at 4 and 12 month follow-up. All outcomes were analysed in a linear repeated-measures 2 × 2 mixed-model by an intention-to-treat analysis approach.

RESULTS: Drop-out was 26 and 33% at 4 and 12 months, respectively. Aerobic exercise adherence was 51% during the first 4 months. At 4 month follow-up no effects were found. At 12 month follow-up, work ability significantly increased by 0.59 on a 0-10 scale (95% CI 0.05-1.13) and need for recovery significantly decreased by - 11.0 on a 0-100 scale (95% CI - 19.8 to - 2.2) in the aerobic exercise group compared to the reference group. Productivity and rating of exertion were unaltered. Analysis stratified on age showed significant effects only among the participants aged ≤ 45 years.

CONCLUSIONS: After 12 months work ability improved and need for recovery decreased. A period of 4 months was insufficient to affect these outcomes emphasising that longer interventions may be needed to induce effects on work ability and need for recovery.

Reference

Lidegaard M, Søgaard K, Krustrup P, Holtermann A, Korshøj M. Effects of 12 months aerobic exercise intervention on work ability, need for recovery, productivity and rating of exertion among cleaners: a worksite RCT . International Archives of Occupational and Environmental Health 2017;91(2):225-235.
doi: 10.1007/s00420-017-1274-3

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Fysiske arbejdskrav og fitness (PhD)