LifestyleExercise

Mind-body exercise at 500 METs-min/week may be the most effective exercise modality and dose for improving sleep quality in breast cancer survivors after primary treatment.

A systematic review and dose-response network meta-analysis of 24 studies with 1495 breast cancer survivors found an inverted U-shaped relationship between exercise dose and sleep quality, with an effective range of 0 to 1100 METs-min/week and peak effect at 780 METs-min/week (SMD=0.7, 95% CrI: 0.38-1.06). Stratified by modality, mind-body exercise at 500 METs-min/week showed the largest effect (SMD=1.06, 95% CrI: 0.3-1.83), while aerobic and combined aerobic-resistance training also significantly improved sleep quality but with smaller effects.

Last updated: Aug 5, 2026•0 RCTs•1 Meta-analyses•📖 Read as article →

Evidence Score

Evidence Score63/100
Human RCT☆☆☆☆☆
Meta-analysis★★★☆☆
Mechanism★★★★★
Safety★★★★☆
Confidencelow

Study Evidence

Study 1. Comparative efficacy of various exercise modalities on sleep quality in breast cancer survivors after primary treatment: A systematic review and dose-response network meta-analysis.

observational

Li H, Dong S, Cheng Y · Medicine (2026)

Participants: N/A
Duration: Not specified (varies across included studies)
Intervention: Exercise modalities including aerobic, combined aerobic-resistance, and mind-body exercise, with doses calculated as METs-min/week.
Outcome: Sleep quality measured by standardized mean differences (SMD) from various sleep scales.
Effect Size: SMD=1.06 (95% CrI: 0.3, 1.83) for mind-body exercise at 500 METs-min/week; SMD=0.7 (95% CrI: 0.38, 1.06) at 780 METs-min/week overall.
Population: Breast cancer survivors who completed primary treatment.

Result:

PubMed: 42536584DOI: 10.1097/MD.0000000000050074

Mechanism Graph

Exercise may improve sleep quality through regulation of circadian rhythms and reduction of stress hormones.
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Mind-body exercise specifically may enhance relaxation and reduce anxiety, contributing to better sleep.
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Exercise can reduce inflammation and improve mood, which are linked to sleep quality.
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Result: Improved sleep quality in breast cancer survivors.

Limitations

  • ⚠Evidence for exercise modalities is of low quality, requiring further high-quality studies.
  • ⚠The meta-analysis included a limited number of studies per modality, potentially affecting precision.
  • ⚠Heterogeneity in sleep quality measures and exercise protocols across studies may introduce bias.

Frequently Asked Questions

What is the optimal exercise dose for improving sleep quality in breast cancer survivors?▼

The optimal dose appears to be around 780 METs-min/week for overall exercise, but mind-body exercise at 500 METs-min/week showed the largest effect.

Which exercise modality is most effective for sleep quality?▼

Mind-body exercise (e.g., yoga, tai chi) at 500 METs-min/week showed the highest standardized mean difference (1.06), suggesting it may be most effective.

Is there a dose-response relationship between exercise and sleep quality?▼

Yes, an inverted U-shaped relationship was found, with benefits increasing up to about 780 METs-min/week and then declining.

Are aerobic exercises effective for sleep quality in this population?▼

Yes, aerobic exercise and combined aerobic-resistance training significantly improved sleep quality, though with smaller effects than mind-body exercise.

Products

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References

  1. 1.Li H, Dong S, Cheng Y. "Comparative efficacy of various exercise modalities on sleep quality in breast cancer survivors after primary treatment: A systematic review and dose-response network meta-analysis.." Medicine, 2026. PMID: 42536584 DOI: 10.1097/MD.0000000000050074
Disclaimer: This content is for educational purposes only and is not medical advice. Evidence scores reflect the quality and quantity of available research, not clinical recommendations. Always consult a healthcare professional before starting any supplement or intervention.