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Open Access J Sports Med. 2014 Mar 10;5:25-36. doi: 10.2147/OAJSM.S41655. eCollection 2014.

Whole-body cryotherapy: empirical evidence and theoretical perspectives.

Author information

1
Sport and Exercise Science Research Institute, Faculty of Life and Health Sciences, University of Ulster, Newtownabbey, Northern Ireland.
2
Research Department, Laboratory of Sport, Expertise and Performance, French National Institute of Sport (INSEP), Paris, France.
3
School of Exercise and Nutrition Sciences and Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia.

Abstract

Whole-body cryotherapy (WBC) involves short exposures to air temperatures below -100°C. WBC is increasingly accessible to athletes, and is purported to enhance recovery after exercise and facilitate rehabilitation postinjury. Our objective was to review the efficacy and effectiveness of WBC using empirical evidence from controlled trials. We found ten relevant reports; the majority were based on small numbers of active athletes aged less than 35 years. Although WBC produces a large temperature gradient for tissue cooling, the relatively poor thermal conductivity of air prevents significant subcutaneous and core body cooling. There is weak evidence from controlled studies that WBC enhances antioxidant capacity and parasympathetic reactivation, and alters inflammatory pathways relevant to sports recovery. A series of small randomized studies found WBC offers improvements in subjective recovery and muscle soreness following metabolic or mechanical overload, but little benefit towards functional recovery. There is evidence from one study only that WBC may assist rehabilitation for adhesive capsulitis of the shoulder. There were no adverse events associated with WBC; however, studies did not seem to undertake active surveillance of predefined adverse events. Until further research is available, athletes should remain cognizant that less expensive modes of cryotherapy, such as local ice-pack application or cold-water immersion, offer comparable physiological and clinical effects to WBC.

KEYWORDS:

cooling; muscle damage; recovery; sport; whole-body cryotherapy

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