A cluster randomized controlled trial comparing the effectiveness of an individual planning intervention with collaborative planning in adolescent friendship dyads to enhance physical activity (TWOgether).
Theda RadtkeAleksandra LuszczynskaKonstantin SchenkelStuart BiddleUrte ScholzPublished in: BMC public health (2018)
This RCT was funded by the Swiss National Science Foundation (100019_169781/1) and was registered on 18/06/2018 at ClinicalTrials.gov : NCT03575559 .