Supervised Resistance TRaining amONG Women at Risk of Breast Cancer Related Lymphedema

"Effect of Supervised Resistance Training on Quality of Life and Arm Volume amONG Women at High Risk for Breast Cancer-related Lymphedema: a Study Protocol for a Randomized Controlled Trial (STRONG-B)"

Breast cancer (BC) is the most common neoplasm in Chile, and its medical treatment leads to high survival. One-third of survivors will develop BC-related lymphedema. Lymphedema is a chronic condition characterized by increased volume in the ipsilateral arm to surgery. A higher volume is associated with decreased physical functionality and quality of life. Recent studies suggest that resistance training could control arm volume through increased muscle mass development, improving physical functionality and quality of life for patients. To our knowledge, there is no study that has analyzed the effect of a resistance training program among women at risk of BC-related lymphedema on quality of life. The purpose of this study is to determine the effect of resistance training on the quality of life among women with adjuvant chemotherapy and high risk of BC-related lymphedema compared to a control group with regular physical therapy management, which does not include resistance training. This is a randomized controlled study. It will be held at the Complejo Asistencial Dr. Sotero del Río, which receives all patients from the South East Metropolitan Health Service. Participants: 116 women receiving adjuvant chemotherapy for BC who have undergone axillary lymph node dissection or with obesity will be recruited. Quality of life will be evaluated with The European Organization for Research and Treatment in Cancer Quality of Life C-30 (EORTC QLQ C30) questionnaire, validated in Chile; the difference in volume between the arms with optoelectric equipment; physical functionality with the six-minute walk test; and the handgrip with a dynamometer. Volunteers will be randomly assigned to the resistance training group or control group. The resistance training group will consist of twice a week supervised sessions, for 12 weeks. The exercises will be for arms and legs, self-loading type, and with external weights. The control group will follow the usual physical therapy management, which does not include resistance training. Subsequently, volunteers will be evaluated at the third and sixth months after completion of the 12 weeks resistance training program.

Supervised Resistance TRaining amONG Women at Risk of Breast Cancer Related Lymphedema

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