DOS 2020

DOS Kongressen 2020 · 183 Exercise booster sessions as a mean to maintain the effect of an exercise-intervention - A Systematic Review Laurits Taul-Madsen, Troels Kjeldsen, Søren Skou, Inger Mechlenburg, Ulrik Dalgas Department of Public Health, Aarhus University; Department of Orthopedic Surgery, Aarhus University Hospital; Department of Sports Science and Clinical Biomechanics, University of Southern Denmark Background: Despite evidence supporting prescription of exercise as medicine in several chronic diseases, long-term adherence to exercise is a persistent chal- lenge. One concept, that has been suggested and currently used clinically to pre- serve exercise-induced effects, is exercise booster sessions (EBS). Nonetheless, the components and effects of these EBS still remain to be reviewed. Purpose / Aim of Study: The purpose of this systematic review was therefore to summarize and synthesize 1) the reported effects of EBS on physical func- tion, pain, quality of life, and societal costs and 2) delineate the basic compo- nents of EBS (frequency, intensity, type and time), in healthy and clinical popu- lations following an exercise intervention. Materials and Methods: Seven databases were electronically searched in December 2019. Included studies were randomized controlled trials (RCTs) of exercise interventions followed by a period of EBS or a control group not receiv- ing EBS. Abstracts and full texts were independently screened and selected for inclusion by two reviewers. Methodological quality of the included studies was assessed using the Cochrane risk of bias tool version 2.0. Findings / Results: Five studies on respectively knee osteoarthritis (n=4) and lower back pain (n=1), reporting four RCTs were included. One study found a positive effect of EBS on the WOMAC score, -46.0 (-80.0, -12.0), whereas the others did not find any differences. The frequency of EBS ranged from 0.09- 1 session/week, while no studies reported exercise intensity. One study found EBS to be cost-effective. All studies were considered to have a high overall risk of bias. Conclusions: Only sparse literature exist on EBS, generally showing no exer- cise-induced effects on physical function or pain. However, the low number of trials, the potential risk of bias, plus the diversity in trial interventions prevent a firm conclusion. Further high-quality RCTs investigating the effect of EBS on physical function, pain, quality of life and societal costs are needed. 162.