Effects of Exercise Training at Different Timeline on Shoulder Dysfunction After Breast Cancer Modified Radical Mastectomy

Inclusion Criteria

• •1. Between the ages of 25 and 75 years;
• •2. Diagnosed with breast cancer by pathological diagnosis, the time of diagnosis and the time of inclusion are less than 6 weeks;
• •3. Patients undergoing modified radical mastectomy: mastectomy includes unilateral total breast or breast-conserving surgery, as well as dissection of the affected axillary lymph nodes, but does not include sentinel lymph node biopsy;
• •4. Postoperative chemotherapy or radiation therapy according to the condition;
• •5. No other malignant tumors within 5 years;
• •6. No physical therapy related contraindications;
• •7. Signing informed consent.