Autonomic Specificity Associated with Participation in the Mindfulness And Tai chi for Cancer Health (MATCH) Study

Abstract

Mindfulness-Based Cancer Recovery (MBCR) and Tai Chi/Qigong (TCQ) are two therapies used by cancer survivors to help alleviate side effects of cancer and its treatment, but have never been directly compared in this population. The present study assessed the autonomic specificity (indexed by blood pressure, heart rate variability, and baroreflex sensitivity) associated with participating in MBCR or TCQ among cancer survivors. Secondary analyses examined associations between changes in distress, quality of life, sleep, and pain and changes in autonomic functioning. Results suggest participation in MBCR, but not TCQ, may be associated with a degree of change in baroreflex sensitivity and blood pressure. Further, increased low-frequency heart rate variability was associated with a pattern of improvements (e.g., decreased fatigue, depression, and mood disturbance). Results may lead to a better understanding of mechanisms involved in symptom improvement as well as a better rationale for selection of complementary therapies.