Participants will receive a supervised Baduanjin Qigong exercise program combined with conventional exercises, including pain-free range-of-motion exercises, low-intensity walking, and physical therapy education. The intervention will be conducted three times weekly for 12 weeks under physiotherapist supervision, while participants continue their prescribed chemotherapy and routine medical follow-up.

Participants in this arm will receive a conventional exercise program consisting of pain-free range-of-motion exercises for the shoulder, elbow, wrist, hip, knee, and ankle joints, low-intensity walking, and physical therapy education to maintain daily activities. The intervention will be administered for 12 weeks, with three sessions per week. Participants will continue their prescribed chemotherapy and routine outpatient medical follow-up throughout the study and will not participate in any additional structured exercise program during the intervention period.

Participants will receive a supervised Baduanjin Qigong exercise program combined with conventional exercises, including pain-free range-of-motion exercises, low-intensity walking, and physical therapy education. The intervention will be conducted three times weekly for 12 weeks under physiotherapist supervision, while participants continue their prescribed chemotherapy and routine medical follow-up.

Muscle strength of the upper and lower limbs will be assessed using the Lafayette Hand-Held Dynamometer. Muscle strength will be quantified as the maximum isometric force generated by the tested muscle groups, with higher values indicating greater muscle strength.

Health-related quality of life will be assessed using the 36-Item Short Form Health Survey (SF-36). The questionnaire evaluates multiple domains of physical and mental health, with domain scores ranging from 0 to 100. Higher scores indicate better health-related quality of life.