2.1. Study Design
RECRUITMENT
This study was a randomized, prospective study assessing the effect of an exercise-based injury-prevention program on MSI incidence, motor performance and psychosocial status. The recruitment period was 15 December 2019 to 1 March 2020. The study period was 6 months (2 March 2020 to 16 August 2020). Outcome variables were measured and recorded at the baseline and after the 6-month study period. This study received ethical approval from the University of Tartu Research Ethics Committee (No. 298/T-10, 18.11.2019). This study was registered at 