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Lymphatic System and Diseases / Cancer Survivorship and Care · Review
Rehabilitation Oncology · August 18, 2026
Encouraging direction, but not yet definitive.
This systematic review and meta-analysis of 4 controlled trials (primarily RCTs) found low-certainty evidence that structured aquatic exercise may reduce self-reported pain intensity in women surviving breast cancer compared with land-based exercise, usual care, or home-based exercise over 8–12 weeks. Evidence for mechanical pain sensitivity (pressure pain threshold) is very low certainty and inconsistent. The findings suggest a potential benefit for pain intensity but remain limited by small sample size, heterogeneity, and uncertain effects on mechanistic outcomes.
Systematic review and meta-analysis of controlled trials (primarily randomized controlled trials). Women surviving breast cancer who received structured aquatic exercise interventions; setting and key eligibility criteria not detailed in source beyond 'controlled studies'.. Intervention: Structured aquatic exercise interventions delivered in heated pools, including supervised aquatic resistance exercise, multimodal water physical therapy, and aqua lymphatic therapy.. Compared with: Land-based exercise, usual care, or home-based exercise with compression therapy.. n = 181.
Pain intensity: SMD = −1.47 (95% CI, −2.40 to −0.55) across 3 RCTs (n = 133) with aquatic versus land-based, usual care, or home-based exercise over 8–12 weeks Heterogeneity for pain intensity I² = 79.1%, indicating substantial inconsistency Mechanical pain sensitivity (pressure pain threshold) evidence very low certainty with inconsistent findings across 2 studies (n = 105)
Safety was not reported in the material analysed. Check the source before drawing any conclusion about harm.
Clinicians may consider recommending structured aquatic exercise as one option for pain management in breast cancer survivors, but should recognize that evidence is limited and heterogeneous. The lack of clear effects on mechanical pain sensitivity suggests that pain intensity improvements may not reflect underlying changes in pain processing or nociception, limiting mechanistic understanding and durability claims.
Meta-analysis of 4 small controlled trials with low-certainty evidence suggests aquatic exercise may reduce pain intensity versus comparators, but findings are limited by heterogeneity, small sample size, and very uncertain effects on mechanical pain sensitivity.
As stated by the source record.
Quoted from the source exactly as published.
Clinicians may consider recommending structured aquatic exercise as one option for pain management in breast cancer survivors, but should recognize that evidence is limited and heterogeneous. The lack of clear effects on mechanical pain sensitivity suggests that pain intensity improvements may not reflect underlying changes in pain processing or nociception, limiting mechanistic understanding and durability claims.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
Background: Persistent pain after breast cancer treatment may involve self-reported pain intensity and mechanical pain sensitivity (MPS). Previous reviews of aquatic exercise in women surviving breast cancer mainly synthesized broad rehabilitation outcomes. This review aimed to evaluate the effects of structured aquatic exercise interventions on pain intensity and MPS in this population. Methods: Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidance, five databases were searched from inception to November 2025. Controlled studies including women surviving breast cancer who received structured aquatic exercise interventions were eligible. Outcomes were grouped as pain intensity or MPS. Pain intensity was synthesized using random-effects meta-analysis, certainty of evidence was assessed with Grading of Recommendations Assessment, Development and Evaluation, and risk of bias was assessed with RoB 2 and ROBINS-I. Results: Four studies (n = 181) were included. Interventions were delivered in heated pools and included supervised aquatic resistance exercise, multimodal water physical therapy, and aqua lymphatic therapy. Low-certainty evidence from three randomized controlled trials (n = 133) suggests that structured aquatic programs may reduce pain intensity compared with land-based exercise, usual care, or home-based exercise with compression therapy over 8 to 12 weeks (SMD = −1.47; 95% CI, −2.40 to −0.55; I 2 = 79.1%). Evidence for MPS, prioritized as shoulder pressure pain threshold, was of very low certainty due to inconsistent findings across two studies (n = 105). Conclusions: Structured, supervised aquatic programs may reduce self-reported pain intensity in women surviving breast cancer; however, evidence remains limited. Effects on MPS are very uncertain, and pain intensity improvements should not be assumed to reflect parallel changes in pressure pain sensitivity.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.