Exercise recovery research measures several outcomes rather than one universal recovery rate. The supplied evidence focuses on acute cold-water immersion (CWI) and cryotherapy studies involving physically active people and athletes.
Key Exercise Recovery Statistics
These findings span soreness, perceived recovery, performance, biomarkers, and study coverage:
- A weighted mean difference of 0.290 in immediate soreness was reported for CWI versus passive recovery immediately after exercise in randomized controlled trials.
- A weighted mean difference of 0.315 in delayed soreness was reported for CWI versus passive recovery during the delayed post-exercise period.
- Water at 10–15 °C produced an immediate soreness effect of 0.273 versus passive recovery in CWI trials.
- Ten-to-15-minute immersion produced an immediate soreness effect of 0.227 in CWI trials.
- Cooling reduced DOMS at 24 hours with Hedges g -0.75 in exhaustive-exercise recovery studies.
- Cooling reduced DOMS at 48 hours with Hedges g -0.73 in exhaustive-exercise recovery studies.
- Cooling reduced DOMS at 96 hours with Hedges g -0.71 in exhaustive-exercise recovery studies.
- CWI improved perceived recovery at 24 hours with SMD 0.66 among physically active participants after one strenuous bout.
- CWI improved 24-hour muscular power after eccentric exercise with SMD 0.34 among physically active participants.
- CWI improved 24-hour muscular power after high-intensity exercise with SMD 0.22 among physically active participants.
- CWI improved strength recovery at 24 hours with p<0.01 in mixed exercise studies.
- CWI improved perceived recovery at 72 hours with p<0.01 in mixed exercise studies.
- CWI improved short-term endurance performance at 1 hour with p=0.01 in mixed exercise studies.
- CWI impaired sprint performance at 1 hour with p=0.03 in mixed exercise studies.
- CWI reduced CK at 24 hours with SMD -0.85 after high-intensity exercise among physically active participants.
- CWI lowered lactate at 24 hours with p<0.01 in high-intensity exercise studies.
- CWI showed no evidence of changing CRP during 0–48 hours after exercise in high-intensity exercise studies.
- CWI showed no evidence of changing IL-6 during 0–48 hours after exercise in high-intensity exercise studies.
Contents
- Key Exercise Recovery Statistics
- Exercise Recovery Statistics for Soreness and Perceived Fatigue
- Cold-Water Immersion Recovery Data for Strength and Power
- Exercise Recovery Statistics for Sprint and Endurance Performance
- Recovery Biomarkers: Creatine Kinase, Lactate and Inflammation
- How Exercise Recovery Effects Change from 0 to 96 Hours
- Exercise Recovery Evidence Across Athletes and Exercise Types
Exercise Recovery Statistics for Soreness and Perceived Fatigue
The temperature and immersion-time review included 9 randomized controlled trials, with evidence searched through January 2015. Its estimates use study-specific soreness scales and should not be read as percentages of people recovered.
| CWI comparison | Period | Estimate |
|---|---|---|
| Immediate soreness versus passive recovery | Immediate post-exercise | Weighted mean difference 0.290 (95% CI 0.037 to 0.543) |
| Delayed soreness versus passive recovery | Delayed post-exercise | Weighted mean difference 0.315 (95% CI 0.048 to 0.581) |
| Water at 10–15 °C, immediate soreness | Immediate post-exercise | Weighted mean difference 0.273 (95% CI 0.107 to 0.440) |
| Water at 10–15 °C, delayed soreness | Delayed post-exercise | Weighted mean difference 0.317 (95% CI 0.102 to 0.532) |
| Immersion for 10–15 minutes, immediate soreness | Immediate post-exercise | Weighted mean difference 0.227 (95% CI 0.139 to 0.314) |
| Immersion for 10–15 minutes, delayed soreness | Delayed post-exercise | Weighted mean difference 0.317 (95% CI 0.102 to 0.532) |
Source: Can Water Temperature and Immersion Time Influence the Effect of Cold Water Immersion on Muscle Soreness? A Systematic Review and Meta-Analysis. Protocols and soreness scales varied across the 9 trials.
Cooling reduced DOMS at 24 hours with Hedges g -0.75 (95% CI -1.20 to -0.30), at 48 hours with -0.73 (95% CI -1.20 to -0.26), and at 96 hours with -0.71 (95% CI -1.10 to -0.33) in an exhaustive-exercise recovery review. The same review reported reduced perceived exertion at 24 hours with Hedges g -0.95 (95% CI -1.89 to -0.00), but no significant RPE effect at other reported recovery times.
Source: The Effect of Post-Exercise Cryotherapy on Recovery Characteristics: A Systematic Review and Meta-Analysis. The review reported high risk of performance and detection bias.
CWI improved perceived recovery at 24 hours after high-intensity exercise with SMD 0.66 (95% CI 0.29 to 1.03) (24 hours after exercise; physically active participants).
(Source)
Cold-Water Immersion Recovery Data for Strength and Power
A meta-analysis of 52 studies involving physically active participants compared CWI with passive recovery after one strenuous bout. Muscular power and strength are separate outcomes.
| Population or exercise subgroup | Period | Outcome |
|---|---|---|
| Eccentric exercise | 24 hours | Muscular power SMD 0.34 (95% CI 0.06 to 0.62) |
| High-intensity exercise | 24 hours | Muscular power SMD 0.22 (95% CI 0.004 to 0.43) |
| High-intensity exercise | 24 hours | CK SMD -0.85 (95% CI -1.61 to -0.08) |
The 68-study physical-performance review reported improved longer-term jump recovery at 24 hours (p<0.01) and 96 hours (p<0.02), improved strength recovery at 24 hours (p<0.01), and improved perceived recovery at 72 hours (p<0.01). It also reported reduced soreness at 1–72 hours, with p-values from <0.01 to 0.02.
A 2026 network meta-analysis found long-duration cold protocols had Hedges g 0.80 (95% CrI 0.03 to 1.57) for resistance-training power after exercise. The evidence was low certainty and came from a protocol-ranking analysis.
In trained male and female soccer players, CWI improved MVC at 24–72 hours post-match with SMD 1.02 (95% CI 0.55 to 1.50) and CMJ with SMD 0.38 (95% CI 0.12 to 0.64). Prediction intervals crossed the null for both outcomes: -0.48 to 2.53 for MVC and -0.39 to 1.15 for CMJ.
Exercise Recovery Statistics for Sprint and Endurance Performance
The physical-performance review reported different directions across tests, follow-up windows, environments, and exercise modes. Its abstract reports p-values rather than one common raw-unit effect size.
| Test or context | Period | Reported result |
|---|---|---|
| Short-term endurance performance | 1 hour after immersion | Improved, p=0.01 |
| Sprint performance | 1 hour after immersion | Impaired, p=0.03 |
| Jump performance | 6 hours after immersion | Impaired, p=0.04 |
| Endurance recovery in warm conditions | Post-exercise | Improved, p<0.01 |
| Endurance recovery in temperate conditions | Post-exercise | No significant improvement, p=0.06 |
| Strength recovery after endurance exercise in cool-to-temperate conditions | Post-exercise | Improved, p=0.04 |
| Sprint recovery after resistance exercise | Post-exercise | Improved, p=0.04 |
CWI did not significantly change soccer 20-meter sprint performance at 24–72 hours post-match, with SMD -0.59 (95% CI -1.41 to 0.23). The prediction interval was wide and crossed the null, from -4.14 to 2.95.
Recovery Biomarkers: Creatine Kinase, Lactate and Inflammation
CK, lactate, CRP, and IL-6 are different measurements, and the supplied reviews do not provide one common raw unit across all studies.
- In mixed exercise studies, CWI reduced CK at 24 hours (p<0.01), 48 hours (p<0.04), and 72 hours (p<0.04).
- In high-intensity exercise studies, CWI lowered lactate at 24 hours (p<0.01) and 48 hours (p<0.01).
- In high-intensity exercise studies, CWI showed no evidence of changing CRP during 0–48 hours after exercise.
- In high-intensity exercise studies, CWI showed no evidence of changing IL-6 during 0–48 hours after exercise.
Sources: Effects of cold water immersion after exercise on fatigue recovery and exercise performance–meta analysis and The effect of cold water immersion on the recovery of physical performance revisited: a systematic review with meta-analysis.
In trained soccer players, CWI reduced CK at 24–72 hours post-match with SMD -0.77 (95% CI -1.17 to -0.37). CK recovery improved consistently across 24, 48, and 72 hours in the review’s pooled direction, although the prediction interval included the null (-2.23 to 0.69).
The cryotherapy review found no significant pooled effect across objective recovery variables over the full 96-hour period. Subjective DOMS improved in that review, but this does not establish a corresponding change in every physiological or performance measure.
How Exercise Recovery Effects Change from 0 to 96 Hours
The time pattern is not a single post-exercise result. A fatigue-recovery meta-analysis reported that CWI significantly reduced CMJ at 0 hours in high-intensity exercise studies.
| Recovery window | Findings reported |
|---|---|
| 0 hours | CWI significantly reduced CMJ |
| 1 hour | Endurance performance improved; sprint performance was impaired |
| 6 hours | Jump performance was impaired |
| 24 hours | DOMS, perceived recovery, selected power, strength, and CK outcomes improved in different reviews |
| 48 hours | DOMS benefit persisted; soccer CMJ benefit was evident |
| 72 hours | Perceived recovery improved; soccer DOMS relief was observed |
| 96 hours | DOMS benefit persisted; longer-term jump recovery improved |
Sources: Effects of cold water immersion after exercise on fatigue recovery and exercise performance–meta analysis, The effect of cold water immersion on the recovery of physical performance revisited: a systematic review with meta-analysis, The Effect of Post-Exercise Cryotherapy on Recovery Characteristics: A Systematic Review and Meta-Analysis, and The Impact of Cold-Water Immersion on Post-Match Recovery in Trained Soccer Players: A Systematic Review and Meta-Analysis.
In soccer players, follow-up occurred at 24, 48, or 72 hours post-match. DOMS relief was observed at 24 and 72 hours, while CMJ benefit was evident only at 48 hours.
Exercise Recovery Evidence Across Athletes and Exercise Types
Study counts describe the evidence base, not population prevalence or a universal recovery rate.
| Evidence source | Population or context | Evidence base |
|---|---|---|
| Fatigue-recovery meta-analysis | Studies published 2002–2022 | 20 studies |
| Physical-performance review | Mixed exercise studies | 68 studies |
| Cryotherapy review | Exhaustive-exercise recovery | 36 articles |
| Athletic-performance meta-analysis | Physically active participants | 52 studies |
| Soccer-specific review | Competitive soccer players | 10 controlled studies |
| Temperature and immersion-time review | Post-exercise CWI; search through January 2015 | 9 randomized controlled trials |
Sources: Effects of cold water immersion after exercise on fatigue recovery and exercise performance–meta analysis, The effect of cold water immersion on the recovery of physical performance revisited: a systematic review with meta-analysis, The Effect of Post-Exercise Cryotherapy on Recovery Characteristics: A Systematic Review and Meta-Analysis, Impact of Cold-Water Immersion Compared with Passive Recovery Following a Single Bout of Strenuous Exercise on Athletic Performance in Physically Active Participants, The Impact of Cold-Water Immersion on Post-Match Recovery in Trained Soccer Players: A Systematic Review and Meta-Analysis, and Can Water Temperature and Immersion Time Influence the Effect of Cold Water Immersion on Muscle Soreness? A Systematic Review and Meta-Analysis.
The evidence is concentrated in acute post-exercise research involving active people or athletes. It does not establish population-wide recovery rates or prove that home sauna use produces the same effects as CWI or broader cryotherapy.