Strategies for recruitment of adolescent girls into physical activity programmes: a systematic review protocol.

Physical activity is essential for youth physical and mental health, yet just 15% of adolescent girls versus 22% of adolescent boys worldwide meet the World Health Organization guideline of at least an average of 60 minutes of moderate-to-vigorous physical activity per day. As activity patterns established in adolescence often persist into adulthood, there is a looming risk of adverse health outcomes due to insufficient physical activity. A persistent challenge faced by physical activity providers, however, is recruiting adolescent girls into their programmes. This systematic review will quantitatively synthesise existing knowledge surrounding the recruitment of adolescent girls into physical activity interventions and aims to provide evidence-based recommendations for optimal recruitment practices.