Cold-water immersion reduces muscle soreness, but longer sessions may not add benefit

Researchers conducted a systematic review and meta-analysis of 44 randomized controlled trials to examine whether immersion duration, water temperature, application pattern, and exercise type affect how well cold-water immersion reduces muscle soreness in athletes and non-athletes. Overall, cold-water immersion outperformed control conditions for soreness relief, though the advantage disappeared with longer immersion durations, and immediate benefits were clearest after endurance rather than resistance exercise.

What the study found

The analysis found that cold-water immersion was associated with reduced muscle soreness compared to control conditions across most of the subgroups examined. For soreness measured immediately after immersion, the benefit held regardless of water temperature (whether classified as severe or moderate cold) and regardless of whether immersion was applied continuously or in intervals.

Immersion duration emerged as a meaningful variable. Short and medium immersion times were associated with positive immediate effects on soreness, while longer immersion durations were not. For delayed soreness — measured hours to days after exercise — cold-water immersion outperformed control in nearly all subgroups, with the exception again being longer immersion times.

The type of exercise also appeared to matter for immediate effects. When soreness was assessed right after the recovery session, cold-water immersion showed a clearer advantage following endurance exercise than following resistance exercise. For delayed soreness, however, the benefit was observed after both exercise types.

Water temperature category and whether immersion was continuous or intermittent did not appear to drive the overall result, suggesting these parameters may be less critical than immersion duration when the goal is soreness management.

Limits worth knowing

The 44 included studies varied considerably in their protocols, participant characteristics, exercise modalities, and how and when soreness was measured, which introduces heterogeneity that pooling alone cannot fully resolve. The search was conducted through July 2020, so more recent trials are not captured. The review included both trained athletes and non-athletes without always being able to separate their outcomes. Funding sources for individual included studies were not uniformly reported in the abstract, and the review itself does not disclose industry support. The analysis focused solely on perceived muscle soreness and did not address other recovery markers such as strength, inflammation, or functional performance.

About this entry. The Heartwood Review summarizes published, peer-reviewed research in its own words and links to the original source. It is not medical advice; consult a physician before beginning or changing any thermal or recovery practice. Findings summarized here describe the study cited, not any product sold by Teak & Marble Atelier. Corrections.