Resistance training (RT) improves an array of treatment-related adverse effects in men with prostate cancer, however, the minimal dosage required is unknown. We systematically reviewed the RT effects in prostate cancer patients to determine the minimal dosage regarding the exercise components (type, duration, volume, and intensity) on body composition, physical function, muscle strength, cardiorespiratory fitness, body mass index (BMI), and prostate-specific antigen (PSA).