Open-access Effects of cryoimmersion in the recovery of post-exercise muscle pain: systematic review with meta-analysis

ABSTRACT

BACKGROUND AND OBJECTIVES  Cryotherapy is a resource widely used in rehabilitation and sport, mainly to reduce pain and improve recovery in athletes. The objective of this study was to determine the effects of immersion cryotherapy on the perception of muscle pain in athletes from different sports.

METHODS  The studies were collected by searching the following databases: Pubmed, Embase, The Cochrane Library, The Physiotherapy Evidence Database (PEDro), Scopus, Web of Science and LILACS. As well as the following gray literature: Google Scholar, LIVIVO, Open Grey and the CAPES Catalog of Theses and Dissertations. The risk of bias assessment was conducted using Cochrane's RoB 2 tool. The primary outcome was muscle pain/ perception of soreness, and the secondary outcome was perception of recovery.

RESULTS  Nine randomized clinical trials were selected. The meta-analysis included two studies on the muscle pain/ perception of soreness outcome. The combined analysis suggests that, overall, the intervention has a statistically significant effect on reducing the measure evaluated (SMD = -0.64, [-1.27, -0.02], p = 0.04); I2 = 0%. However, specific analyses of 24 h (p=0.24), 48 h (p=0.10) and 72 h (p=0.50) post-intervention individually did not show statistical significance.

CONCLUSION  Cold water immersion can have beneficial effects on reducing muscle pain, but the lack of primary studies of high methodological quality prevents certainty in this statement.

Keywords:
Athletes; Cryotherapy; Pain measurement

HIGHLIGHTS

Cryotherapy is a therapeutic modality that aims to reduce tissue temperature in order to reduce pain and metabolism

This tool is widely used in sports, but its protocols are still lacking a better foundation

In this systematic review, it was possible to observe a reduction in pain in athletes who underwent cryoimmersion

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