Group-based exercise interventions for increasing physical activity in cancer survivors: a systematic review of face-to-face randomized and non-randomized trials.

To increase physical activity (PA), interventions based on group dynamics may be superior to interventions that target aggregates of people but do not have formal strategies to enhance cohesion. This review examined the extent to which group dynamics processes have been integrated within exercise and/or PA interventions in cancer survivors, and explored the implementation and effectiveness of these interventions for increasing PA.