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THE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS

A Journal on Applied Physiology, Biomechanics, Preventive Medicine,
Sports Medicine and Traumatology, Sports Psychology


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ORIGINAL ARTICLE  SPORT INJURIES AND REHABILITATION


The Journal of Sports Medicine and Physical Fitness 2017 September;57(9):1147-53

DOI: 10.23736/S0022-4707.16.06827-4

Copyright © 2016 EDIZIONI MINERVA MEDICA

language: English

Rates and risk factors of injury in CrossFitTM: a prospective cohort study

Sebastian MORAN, Harry BOOKER, Jacob STAINES, Sean WILLIAMS

Department for Health, University of Bath, Bath, UK


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BACKGROUND: CrossFitTM is a strength and conditioning program that has gained widespread popularity since its inception approximately 15 years ago. However, at present little is known about the level of injury risk associated with this form of training. Movement competency, assessed using the Functional Movement ScreenTM (FMS), has been identified as a risk factor for injury in numerous athletic populations, but its role in CrossFit participants is currently unclear. The aim of this study was to evaluate the level of injury risk associated with CrossFit training, and examine the influence of a number of potential risk factors (including movement competency).
METHODS: A cohort of 117 CrossFit participants were followed prospectively for 12 weeks. Participants’ characteristics, previous injury history and training experience were recorded at baseline, and an FMS assessment was conducted.
RESULTS: The overall injury incidence rate was 2.10 per 1000 training hours (90% confidence limits: 1.32-3.33). A multivariate Poisson regression model identified males (rate ratio [RR]: 4.44 ×/÷ 3.30, very likely harmful) and those with previous injuries (RR: 2.35 ×/÷ 2.37, likely harmful) as having a higher injury risk. Inferences relating to FMS variables were unclear in the multivariate model, although number of asymmetries was a clear risk factor in a univariate model (RR per two additional asymmetries: 2.62 ×/÷ 1.53, likely harmful).
CONCLUSIONS: The injury incidence rate associated with CrossFit training was low, and comparable to other forms of recreational fitness activities. Previous injury and gender were identified as risk factors for injury, whilst the role of movement competency in this setting warrants further investigation.


KEY WORDS: Athletic injuries - Risk factors - Epidemiology

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Publication History

Issue published online: July 10, 2017
Article first published online: January 13, 2017
Manuscript accepted: December 31, 2016
Manuscript revised: December 5, 2016
Manuscript received: July 6, 2016

Cite this article as

Moran S, Booker H, Staines J, Williams S. Rates and risk factors of injury in CrossFitTM: a prospective cohort study. J Sports Med Phys Fitness 2017;57:1147-53. DOI: 10.23736/S0022-4707.16.06827-4

Corresponding author e-mail

S.Williams@bath.ac.uk