Jay, Kenneth2; Jakobsen, Markus Due2; Sundstrup, Emil2; Skotte, Jørgen H2; Jørgensen, Marie Birk2; Andersen, Christoffer Højnicke2; Pedersen, Mogens Theisen4; Andersen, Lars Louis2
1 Department of Nutrition, Exercise and Sports, Department of Nutrition, Exercise and Sports, Faculty of Science, Københavns Universitet2 Det Nationale Forskningscenter for Arbejdsmiljø3 Integrated Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, Københavns Universitet4 Integrated Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, Københavns Universitet
A randomized controlled trial
ABSTRACT: The aim of this study was to investigate the effectiveness of a worksite intervention using kettlebell training to improve postural reactions to perturbation and jump performance.This single-blind randomized controlled trial involved 40 adults (n=40) from occupations with a high prevalence of musculoskeletal pain and discomfort (mean age 44 years, body mass index 23 kg/m2, 85% women). A blinded examiner took measures at baseline and follow-up. Participants were randomly assigned to a training group - doing kettlebell swings three times a week for 8 weeks - or to a control group. The outcome measures were postural reactions to sudden perturbation and maximal countermovement jump height.Compared to the control group, the training group significant decreased stopping time following perturbation (-109ms, 95% CI [-196:-21]). Jump height increased significantly in the training group (1.5cm, 95% CI [0.5:2.5]), but this was non-significantly different from control.Kettlebell training improves postural reactions to sudden perturbation. Future studies should investigate whether kettlebell training can reduce the risk of low-back injury in occupations with manual material handling or patient handling where sudden perturbations often occur.
Journal of Strength and Conditioning Research, 2013, Vol 27, Issue 5, p. 1202-9