Effects of Yoga on Phase Angle and Quality of Life in Patients with Breast Cancer: A Randomized, Single-Blind, Controlled Trial

Author: Sibel Eyigör1, Sebnem Apaydin2, Hilal Yesil3, Goksel Tanıgor1, Derya Hopanci Bicakli4
1 Department of Physical Medicine and Rehabilitation, Ege University Faculty of Medicine, Izmir, Turkey.
2 Department of Medical Pharmacology, Ege University Faculty of Medicine, Izmir, Turkey.
3 Department of Physical Medicine and Rehabilitation, Afyonkarahisar Health Sciences University, Afyon, Turkey.
4 Department of Medical Oncology, Ege University Faculty of Medicine, Bornova, Turkey.
Conference/Journal: Complement Med Res
Date published: 2021 Apr 1
Other: Special Notes: doi: 10.1159/000515494. , Word Count: 226

Phase angle (PA), a parameter that is obtained from body composition analysis, is an indicator of cellular health status. A lower PA in cancer patients can lead to a decrease in functional status and quality of life (QoL) and increased mortality. Studies have shown that physical activity increases PA. In this study, we aimed to examine the effects of Hatha yoga on PA, body composition, and QoL in patients with breast cancer.

Thirty-one patients were randomized into the yoga (group 1, n = 15) and the control group (group 2, n = 16). Hatha yoga was practiced twice a week for 10 weeks in the intervention group. The PA of the patients was assessed using a body analysis instrument, and QoL was evaluated with an EORTC QLQ questionnaire both before treatment and at week 10.

Group 1 had significant improvements in the posttreatment EORTC QLQ functional and global scores (p < 0.05). In group 2, a significant improvement was observed in the EORTC QLQ symptom subscale (p = 0.035). PA values did not show any improvements in both groups (p > 0.05). Comparison of the 2 groups revealed no differences.

Yoga may have beneficial effects on QoL in patients with breast cancer but does not have a significant effect on PA. There is a need for further studies to make a definitive statement.

Keywords: Body composition; Breast cancer; Hatha yoga; Phase angle; Quality of life.

PMID: 33794532 DOI: 10.1159/000515494