Massage and relaxation therapy to improve sleep in cancer survivors Original paper
This Study Summary was published on January 5, 2021.
Background
The prevalence of sleep disturbances in cancer survivors, even 5 years after treatment, is nearly twice that of the general population. Nonpharmacological treatments, such as massage and relaxation therapy, may alleviate a variety of physical and psychosocial issues, including sleep outcomes in cancer survivors. However, there is a need for a systematic review of the available randomized controlled trials (RCTs).
The study
This paper is a systematic review of the effects of massage therapy (4 RCTs, 187 participants) and relaxation therapy (3 RCTs, 33 participants) on self-reported or objectively measured sleep outcomes in cancer survivors.
Out of the 7 trials, 6 involved adults (aged 18–78) and 1 involved children (aged 4–8).
Out of the 7 trials, 4 included participants with mixed cancer types, 3 included participants with metastatic cancer, and 2 included participants with leukemia.
The results
Relative to control, massage therapy improved self-reported sleep quality in one trial and objective sleep quality (in terms of the number of nighttime-long sleep episodes) in another trial.
None of the 3 trials on relaxation therapy reported improvements, relative to control, although there were trends for improved self-reported sleep quality.
Most of the massage therapy trials were assessed as having an unclear risk of bias, while most of the relaxation-therapy trials were assessed as having a high risk of bias.
Note
Several of the few, small trials included in this review measured many outcomes but detected improvements only in a small subset of these outcomes — which suggests that some of the statistically significant improvements were false positives.
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This Study Summary was published on January 5, 2021.