Introduction: Breast cancer is the most common form of cancer in women worldwide, but it can also affect men. Breast cancer patients go through several exhausting and invasive treatments, which in most cases leads to a low quality of life. Yoga practice is a form of supportive therapy, which, among other things, is recommended for breast cancer patients due to its low risk of injury. Purpose: The purpose of this thesis was to determine whether yoga affects the quality of life of breast cancer patients through a literature review. Methods: The thesis used a descriptive research method with a literature review, which we searched in the PubMed and CINAHL databases with the keywords yoga AND breast cancer AND quality of life. Results: We reviewed six randomised controlled trials that met the inclusion criteria and included a total of 524 breast cancer patients. Yoga interventions were held at home or in dedicated institutions, individually or in groups. Breast cancer patients often report about reduced quality of life in several levels, due to the consequences of the disease and treatment. The authors of the reviewed research report positive effects of practicing yoga during treatment. Yoga contributes to emotional and social well-being and has a positive effect on the consequences of treatment, such as fatigue, breathing problems, loss of appetite, constipation and diarrhea. Discussion and conclusion: Empirical evidence suggests that practicing yoga improves quality of life in breast cancer patients during treatment. Based on this, yoga practice can be used as a reliable supportive therapy in these patients, but it is not clear which specific type of yoga is more recommended. Researchers used different measurement instruments in the form of questionnaires. The effects of yoga are mostly short-term, so long-term effects require consistent practice. Since only women were included in the reviewed studies, future studies could include men as well, even though very few men get breast cancer. In the future, studies should also assure larger and more diverse samples of participants and determine which type of yoga is more suitable for such patients.
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