Summary of characteristics of included studies.

Data are given in number of studies and percentages (N (%)). Chemo = chemotherapy a. Instruction for control group included: exercise allowed during the intervention period, including no advice, asked or recommended to exercise. b. Instruction for control group included: not to exercise, no change in exercise, continue exercise as it is. c. Intervention for control group included: information about exercise, education (session) unrelated to exercises, keep exercise diary, use pedometers or accelerometers, phone calls unrelated to exercise, alternative intervention. d. Study intervention was (partially) offered to control group after study intervention period, or information about exercise or exercise prescriptions were offered to control group after study intervention period. Summary of characteristics of included studies.