Effect of Yoga Program on Quality of Life in Women With Breast Cancer Receiving Endocrine Therapy

The goal of this randomized controlled trial is to evaluate the effect of a yoga program on improving the quality of life, reducing joint pain, and alleviating vasomotor symptoms (night sweats, hot flashes) in women with breast cancer undergoing endocrine therapy. The main questions it aims to answer are: Does the yoga program significantly improve the quality of life in women with breast cancer undergoing endocrine therapy? Is the yoga program effective in reducing joint pain in women with breast cancer? Does the yoga program reduce the severity of night sweats and hot flashes in women with breast cancer? Researchers will compare the intervention group, which will receive the yoga program, to the control group, which will continue with their physician-recommended routine exercise, to see if there is a difference in these outcomes. Participants will: Participants will consist of women with breast cancer undergoing endocrine therapy, with 34 in the yoga (intervention) group and 34 in the control group. Complete the;Patient Assessment Form; and the Functional Assessment of Cancer Therapy - Endocrine Symptoms (FACT-ES) scale. The intervention group will participate in a 70-minute yoga program, delivered online via a digital platform, four days a week for six weeks, led by an instructor. The control group will not receive any intervention and will continue with their physician-recommended routine exercise.

Inclusion Criteria: * Being over 18 years of age, * Having the ability to read, write, and speak Turkish, * Having a diagnosis of breast cancer, * Having completed surgical treatment, * Having completed chemotherapy or radiation therapy, * Recently starting endocrine therapy, * Having a Body Mass Index (BMI) below 35. Exclusion Criteria: * Being over 70 years of age, * Having a diagnosis of metastatic disease, * Previous participation in yoga or similar exercises, * Having a physical disability that prevents practicing yoga, * Having a condition that causes shortness of breath (e.g., COPD), * Having another chronic heart or lung disease that prevents yoga practice, * Having a serious psychiatric illness or cognitive impairment.