E1 ReplicatedModerate confidencePEM not requiredRCTPeer-reviewedMachine draft
Standard · 3 min
Efficacy of aquatic vs land-based therapy for pain management in women with fibromyalgia: a randomised controlled trial.
Rivas Neira, S, Pasqual Marques, A, Fernández Cervantes, R et al. · Physiotherapy · 2024 · DOI
Quick Summary
This study compared two types of exercise therapy for women with fibromyalgia: exercising in a pool (aquatic therapy) versus exercising on land. Both groups did 60-minute exercise sessions three times a week for 12 weeks. Six weeks after the program ended, women who did aquatic therapy reported less pain and better sleep quality than those who exercised on land, suggesting that water-based exercise may be particularly helpful for fibromyalgia.
Why It Matters
ME/CFS and fibromyalgia frequently co-occur and share overlapping symptoms including pain and sleep disturbance. This study identifies aquatic therapy as a potentially superior non-pharmacological intervention for pain management in a related chronic condition, providing evidence that may inform exercise recommendations for post-exertional malaise-aware rehabilitation in ME/CFS populations. The sustained benefit at follow-up suggests potential long-term value of aquatic approaches in managing persistent symptoms.
Observed Findings
At 18-week follow-up, aquatic therapy group showed lower pain intensity (median 2.7 vs 5.5, p=0.023) with large effect size (Cohen's d=0.8).
At 18-week follow-up, aquatic therapy group demonstrated better sleep quality (median 12.0 vs 15.0, p=0.030) with large effect size (Cohen's d=0.8).
No significant differences between groups were detected at the end of the 12-week treatment period (post-treatment).
Mean participant age was 50 years with median symptom duration of 11 years, indicating a chronically ill population.
Inferred Conclusions
Aquatic therapy may be superior to land-based therapy for reducing pain intensity and improving sleep quality in women with fibromyalgia, with benefits emerging or becoming more pronounced during the follow-up period.
Aquatic therapy should be considered a viable treatment option for fibromyalgia-related pain and sleep disturbance.
The delayed emergence of between-group differences suggests potential mechanisms of sustained neural or physiological adaptation from water-based exercise.
Remaining Questions
Why did aquatic therapy advantages emerge only at follow-up rather than immediately post-treatment, and what mechanisms sustain these benefits?
How do these findings apply to ME/CFS populations, which have distinct pathophysiology and exercise intolerance characteristics?
What This Study Does Not Prove
This study does not establish that aquatic therapy is effective for ME/CFS specifically, as it enrolled only fibromyalgia patients; outcomes may differ substantially given ME/CFS's distinctive post-exertional malaise and neurological features. The study does not determine whether benefits persist beyond 18 weeks or explain the biological mechanisms underlying aquatic therapy's advantages. The single-blind design and per-protocol (rather than intention-to-treat) analysis may introduce bias and limit causal inference.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →