Milbury, K., Chaoul, A., Biegler, K., Wangyal, T., Spelman, A., Meyers, C.A., . . . Cohen, L. (2013). Tibetan sound meditation for cognitive dysfunction: Results of a randomized controlled pilot trial. Psycho-Oncology.
Test the effect of Tibetan sound meditation on cognitive function
Patients randomly were assigned to the treatment group or a wait list control group. The intervention consisted of 12 meditation sessions that were 60 minutes long and incorporated instructions on developing breathing, awareness, and concentration skills, as well as visualization maneuvers. The intervention was offered twice a week over six weeks. A CD recording and printed materials were provided to the participants with the expectation that they practice the intervention independently at home. Objective and subjective outcome measures were evaluated at baseline and one month after completion of the intervention. Subjective measures also were completed during the last week of the intervention. Class attendance and participant satisfaction were tracked to measure the feasibility of the intervention program.
Randomized clinical trial
No significant differences were seen between the intervention or control groups in either objective or subjective measures of cognitive function over time. Although significantly less depressive symptoms were found in the treatment group (p = 0.05) during the last week of the intervention, this effect was no longer significant one month later, indicating that the result was not sustainable. No significant differences between groups over time were found for fatigue or sleep-wake disturbances. Although all treatment group participants attended at least 50% of the class sessions, compliance was a variable for both class and individual participation.
Findings from this study do not provide clear support for a significant effect of Tibetan sound meditation on cognitive function, fatigue, or sleep-wake disturbances. However, this intervention may have a limited, short-term effect on decreasing depression.
Although this treatment was not associated with improvements in objective or subjective measures of cognitive function, it was underpowered and lacking consistent patient compliance with the intervention. Further research with larger sample sizes may be warranted to determine effectiveness.