This file was dowloaded from the institutional repository Brage NIH -brage.bibsys.no/nih Bratland-Sanda, S., Sundgot-Borgen, J., Myklebust, G. (2015 Research affiliation: Norwegian school of sport sciences, Oslo Norway.
Conflicts of interest and source of funding:The authors have no conflicts of interest. No funding was received for this study. and both acute and overuse injuries (25% vs 10%, p<0.001) was higher in the HIL than in the LIL group (OR: 3.9, CI: 2.7, 5.5). The most prevalent injury locations were ankle and lower leg. The most frequent location for musculoskeletal pain was the shoulder/neck region. Factors associated with injury were instruction loading (h/w), years working as an instructor and EDI score. A high total EDI score predicted musculoskeletal pain.
Conclusion:The high prevalence of injuries and musculoskeletal pain suggests a need for prevention strategies in the fitness industry. There is a need for limits regarding weekly instruction loading, especially for classes with high metabolic and/or mechanical loading.3