The goal of this clinical trial is to learn if Baduanjin exercise could be adopted by breast cancer survivors and improve their upper limb dysfunction. The main questions it aims to answer are:
* Does Baduanjin exercise improve upper limb dysfunction among breast cancer survivors? * What problems or adverse events do participants have if they adopt Baduanjin exercise to improve upper limb dysfunction?
Participants will:
* Adopt Baduanjin exercise following an evidence-based intervention protocol * Report their exercise frequency, length, and unexpected symptoms * Receive three times assessment and follow-up every week
Female, aged ≥ 18 years, diagnosed with non-metastatic unilateral Stage I-IIIa non-metastatic breast cancer, regardless of cancer type;
Surgeries completed at least two months before enrolment, and completion of radiotherapy and/or chemotherapy, with or without aromatase inhibitor therapy, upon enrolment;
Experiencing breast cancer treatment-related ULD, which is measured by the Disabilities of the Arm, Shoulder, and Hand (DASH) scale with a score of 20 or above;
Karnofsky Performance Status Scale (KPS), used to measure a patient's ability to perform daily activities and self-care independently, with a score of 90 or above;
Any patient with a history of upper limb surgery, injury (fracture or shoulder dislocation), or other conditions not related to breast cancer treatments;
With other complications or adverse medical conditions that cannot perform BdjE, such as severe lymphedema, axillary web syndrome, or adhesive capsulitis;
Undergoing any physiotherapy for ULD or leading regular physical exercises in the previous three months;
Had skin grafting and autologous myocutaneous flap breast reconstruction;