The effects of mindfulness-based stress reduction on objective and subjective sleep parameters in women with breast cancer: a randomized controlled trial.
Study Goal
The researchers aimed to investigate the effects of mindfulness-based stress reduction (MBSR(BC)) on objective and subjective sleep parameters in breast cancer survivors.
Results Summary
MBSR(BC) showed significant improvements in objective sleep parameters (sleep efficiency, percent sleep time, and fewer waking bouts) at 12 weeks, with small nonsignificant improvements in subjective sleep parameters. No significant relationship was found between practice duration and sleep outcomes.
Population
Breast cancer survivors (stages 0-III), mean age 57 years.
Effective Dosage
6-week formal (in-class) MBSR(BC) program.
Duration
6 weeks with a 12-week follow-up.
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
mindfulness-based stress reduction for breast cancer survivors (MBSR(BC)) | increase | sleep efficiency | breast cancer survivors (BCS) | 78.2% MBSR(BC) group versus 74.6% UC group | showed indications of a positive effect | #1 |
mindfulness-based stress reduction for breast cancer survivors (MBSR(BC)) | increase | percent of sleep time | breast cancer survivors (BCS) | 81.0% MBSR(BC) group versus 77.4% UC group | showed indications of a positive effect | #2 |
mindfulness-based stress reduction for breast cancer survivors (MBSR(BC)) | decrease | number waking bouts | breast cancer survivors (BCS) | 93.5 in MBSR(BC) group versus 118.6 in the UC group | showed indications of a positive effect | #3 |
mindfulness-based stress reduction for breast cancer survivors (MBSR(BC)) | increase | subjective sleep parameters (SSP) | breast cancer survivors (BCS) | p = 0.09 | Small nonsignificant improvements were found | #4 |
minutes of MBSR(BC) practice | no change | subjective sleep parameters (SSP) | breast cancer survivors (BCS) | - | No significant relationship was observed | #5 |
minutes of MBSR(BC) practice | no change | objective sleep parameters (OSP) | breast cancer survivors (BCS) | - | No significant relationship was observed | #6 |
OBJECTIVE: The purpose of this study was to investigate the effects of mindfulness-based stress reduction for breast cancer survivors (MBSR(BC)) on multiple measures of objective and subjective sleep parameters among breast cancer survivors (BCS). METHODS: Data were collected using a two-armed randomized controlled design among BCS enrolled in either a 6-week MBSR(BC) program or a usual care (UC) group with a 12-week follow-up. The present analysis is a subset of the larger parent trial (ClinicalTrials.gov Identifier: NCT01177124). Seventy-nine BCS participants (mean age 57 years), stages 0-III, were randomly assigned to either the formal (in-class) 6-week MBSR(BC) program or UC. Subjective sleep parameters (SSP) (i.e., sleep diaries and the Pittsburgh Sleep Quality Index (PSQI)) and objective sleep parameters (OSP) (i.e., actigraphy) were measured at baseline, 6 weeks, and 12 weeks after completing the MBSR(BC) or UC program. RESULTS: Results showed indications of a positive effect of MBSR(BC) on OSP at 12 weeks on sleep efficiency (78.2% MBSR(BC) group versus 74.6% UC group, p = 0.04), percent of sleep time (81.0% MBSR(BC) group versus 77.4% UC group, p = 0.02), and less number waking bouts (93.5 in MBSR(BC) group versus 118.6 in the UC group, p < 0.01). Small nonsignificant improvements were found in SSP in the MBSR(BC) group from baseline to 6 weeks (PSQI total score, p = 0.09). No significant relationship was observed between minutes of MBSR(BC) practice and SSP or OSP. CONCLUSIONS: These data suggest that MBSR(BC) may be an efficacious treatment to improve objective and subjective sleep parameters in BCS.