Objectives: The purpose of this study was to determine the effect of 6 weeks of selected exercise on muscle strength, balance and core stability in women with breast cancer and healthy women. Design: This quasi-experimental study included 120 women in five groups, supervised resistance, supervised combination and home-base resistance and patient control (each n = 25) and healthy controls groups (n = 20) who were randomly selected and was performed at the Cancer Research Center of Isfahan University of Medical Sciences. The study was at the Phase 3 and single Blinded. Setting and conduct: After reviewing the 1230 cases and completion of inform consent by patients, qualified samples, initial assessment was carried out and after the 6 week, post -test was done. Participants: The main inclusion criteria were aged 29 to 65 years, diagnosed with breast cancer, the completion of treatment period in the 6 previous months. The main exclusion criteria were injury, onset or increased pain during exercise and disease recurrence. Interventions: Home based and supervised resistance training groups were done 13 exercises with theraband and supervised combination training group were done 15 exercises with theraband, medicine ball and their body weight, for 6 weeks. Each session lasted 90 minutes. Disease and the healthy control groups had no regular physical activity during the intervention. Main outcome measures: Primary outcomes were included muscle strength, balance, core stability and secondary outcomes were included fatigue, quality of life, lymphedema, pain, mood and fall risk.