This study aims to investigate the effect of progressive resistance exercise training on the clinical findings and functional outcomes of lymphedema in individuals who develop upper extremity lymphedema after breast cancer treatment (surgery, chemotherapy and/or radiotherapy).

The study is designed as a randomized controlled trial. Volunteers participating in the study will consist of individuals who have developed lymphedema after breast cancer and who agree to participate in the study. Volunteer female participants will be divided into 2 groups of equal numbers. Participants in the control group will receive lymphedema treatment, while participants in the exercise group will perform progressive resistance upper extremity exercises at home, 2 days a week for 12 weeks. All exercises will be performed with compression bandages. All participants will be evaluated before and after treatment using a hand dynamometer, the Disabilities of the Arm, Shoulder and Hand Scale, and the Lymphedema Quality of Life Questionnaire-Arm.

Inclusion criteria:

• Being between 18 and 60 years of age.
• Being included in the study 3 months after undergoing surgery.
• Being able to tolerate compression bandages or compression garments.

Exclusion criteria:

- Individuals who need to restart active cancer treatment during the study period. - Being within the first 3 months after surgery.