Effectiveness of a motivational-volitional group intervention to increase physical activity among breast cancer survivors compared to standard medical rehabilitation-Study protocol of a prospective controlled bi-centred interventional trial

Despite proven benefits of regular physical activity, the majority of breast cancer survivors do not meet recommended physical activity guidelines. The Motivation-Volition (MoVo) Concept was designed to help people to set up and maintain a health-enhancing lifestyle. Studies have proven the short- and long-term efficacy of the MoVo intervention programmes. The intervention consists of four group sessions (60 min). The sessions contain informational parts, structured training in setting goals, planning exercises, problem-solving, single person working and group discussion. We apply a sequential control group design in two inpatient rehabilitation facilities to evaluate the effect of a motivational-volitional group intervention compared to standard rehabilitation. Our target groups are inactive women after breast cancer. Primary outcome is the amount of physical activity per week. Secondary outcomes include physical functioning, fatigue and depression. 800 patients diagnosed with breast cancer on medical rehabilitation will be included, 400 participants per clinic and group. Participants will be assessed by questionnaires upon clinic arrival, before discharge and six and twelve months after discharge. The study will provide evidence on the effect of a MoVo group intervention for physical inactive women after breast cancer. Positive results may have an impact on long-term improvement in exercise behaviour and health status.