The Relationship Between Yoga Practice Dosage and Perceived Stress, Anxiety, and Self-reported Health Among Breast Cancer Survivors Who Practice Yoga.

The aim of this anonymous online study was to explore the yoga practice of breast cancer survivors to determine if yoga dosage (frequency and duration of practice) was related to stress, anxiety, and self-reported health in female survivors. Participants were recruited from online breast cancer support groups during a 3-month period (June-September 2019). Demographic information, stage and treatment of breast cancer, and frequency of yoga participation, including a home yoga practice were reported. Measures include the Perceived Stress Scale, State-Trait Anxiety Inventory, and self-reported health. Cumulative yoga dosage was calculated. Thirty-five women participated (mean age = 55 years) and were divided into low and high yoga dosage groups based on the sample distribution. Low dosage of yoga was operationally defined as a cumulative dosage that fell within the lowest quartile (≤25%). Findings indicated no difference between the low-dosage group compared with the high-dosage group for perceived stress and self-reported health; but the high dosage yoga group had lower state anxiety scores (P < .05). All participants reported good self-reported health. These findings contribute to our knowledge of the psychosocial aspects of breast cancer survivorship and raise questions for further research quantifying the therapeutic dosing of yoga practice.