In short:
- Cold therapy provides short-term relief from muscle soreness during recovery and speeds up the fading of perceived fatigue after intense training.
- The optimal cold-water bath is 10–15 °C for 10–15 minutes.
- Strength trainers should avoid frequent use, as cold therapy may blunt muscle hypertrophy adaptations.
- Cryochambers offer a similar effect in less time but require professional supervision.
Cold therapy is becoming ever more popular among athletes’ recovery methods, but the scientific evidence on its use is mixed. Before you head for an ice bath or a cryochamber, it’s worth understanding what the studies actually show and when cold therapy genuinely pays off.
How does cold therapy work in an athlete’s body?
Cold therapy relies on low temperatures – typically 10–15 °C in a water bath, down to −110 °C in a cryochamber – which trigger several physiological mechanisms in the body. The first response is vasoconstriction: peripheral blood vessels narrow, which reduces local blood supply, tissue metabolism and the accumulation of inflammatory mediators. After cooling, the opposite effect follows – reactive vasodilation – which helps oxygen-rich blood carry metabolic by-products away (Hohenauer et al., 2015).
At the same time, cold slows nerve conduction, which explains why muscle tension and pain perception drop immediately after a cold bath. Immersion lowers tissue temperature by roughly 1–4 °C, which is enough to affect the production of prostaglandins and bradykinin – the main substances involved in inflammatory pain.
What does the scientific evidence say about relieving muscle soreness?
By far the most comprehensive review to date is the Cochrane systematic review, which pooled 17 randomized trials (Bleakley et al., 2012). The results showed that cold-water immersion at 10–15 °C for 10–15 minutes reduced the severity of so-called DOMS (delayed onset muscle soreness) statistically significantly compared with passive rest. The effect size was moderate, but clinically meaningful mainly in endurance and ball-game athletes.
The meta-analysis by Machado et al. (2016) refined this, finding that the optimal water temperature is 11–15 °C and the optimal duration 11–15 minutes; longer sessions provide no added benefit. Water that is too cold (below 10 °C) increases the risk of frostbite with no additional gain.
Athletes who want to support their recovery holistically – including with supplements – will find useful information in the article Dietary supplements for athletes, which also covers evidence-based approaches.
Is cold therapy suitable between intense training cycles?
With a dense competition calendar, speed of recovery is often more decisive than maximal adaptation. The systematic review by Hohenauer et al. (2015) found that cold therapy statistically significantly improved perceived fatigue and subjective recovery measures within 24–48 hours after training load – a practical advantage when the next training session or competition is close.
There is, however, an important caveat: regular use of cold therapy during a strength training period may blunt muscle hypertrophy and strength adaptations. With that in mind, it’s worth tying the frequency of cold therapy to how you put together your training program – use it mainly during the competition period and avoid routine use in a high-volume hypertrophy training phase.
The Estonian sports community is embracing science-based recovery strategies more and more. In celebrating top athletes’ achievements, the Fitness.ee portal once again presented its honour this year: the Fitness.ee honour went to the best athlete and coach of the XXV EKV, which reflects the sports community’s growing interest in evidence-based methods.
How to use cold therapy safely?
The World Health Organization’s physical activity guidelines stress that recovery protocols should support – not replace – regular movement and adequate sleep. Cold therapy is a complementary tool, not a standalone solution.
Practical recommendations for safe use:
- In a water bath: temperature 10–15 °C, duration 10–15 minutes.
- In a cryochamber: a maximum of 3 minutes at −110 °C; only in a certified facility.
- Contraindications: Raynaud’s disease, peripheral arterial disease, open wounds on the skin, cold hypersensitivity.
- Children and older adults: weaker thermoregulation calls for a shorter duration and a higher temperature.
Cold therapy is not a universal solution – the evidence suggests using it purposefully, taking into account your individual training phase and goals.
References
- Bleakley C, McDonough S, Gardner E, Baxter GD, Hopkins JT, Davison GW. (2012). Cold-water immersion (cryotherapy) for preventing and treating muscle soreness after exercise. Cochrane Database of Systematic Reviews. PMID: 22592706
- Hohenauer E, Taeymans J, Baeyens JP, Clarys P, Clijsen R. (2015). The Effect of Post-Exercise Cryotherapy on Recovery Characteristics: A Systematic Review and Meta-Analysis. PLoS ONE. PMID: 26413718
- Machado AF, Ferreira PH, Micheletti JK, de Almeida AC, Lemes ÍR, Vanderlei FM, Netto Júnior J, Pastre CM. (2016). Can Water Temperature and Immersion Time Influence the Effect of Cold Water Immersion on Muscle Soreness? A Systematic Review and Meta-Analysis. Sports Medicine. PMID: 26581833
Frequently asked questions
How long should you take a cold bath?
Research suggests an optimal duration of 10–15 minutes at a temperature of 10–15 °C. Longer sessions provide no added benefit and may increase the risk of frostbite.
Is cold therapy suitable for daily use?
It can be used more often during the competition period, but in a strength and hypertrophy training phase it’s worth limiting the frequency, because cold therapy may blunt muscle growth adaptations.
What is the difference between a cold bath and a cryochamber?
Both reduce DOMS and perceived fatigue, but the evidence does not show a clear superiority of the cryochamber. A cold bath is cheaper and more accessible; a cryochamber offers a similar effect in less time (2–3 min) but requires professional supervision.
Who should not use cold therapy?
Cold therapy is not recommended in cases of Raynaud’s disease, peripheral arterial disease, cold hypersensitivity or open skin lesions. If in doubt, consult a doctor or a sports physiotherapist.
Can cold therapy help improve sleep quality?
Direct evidence that it improves sleep is limited. It is advisable to use cold therapy right after training load rather than right before bed, because the rise in body temperature after cooling down may make it harder to fall asleep.
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