Fig. 1From: Bright light therapy versus physical exercise to prevent co-morbid depression and obesity in adolescents and young adults with attention-deficit / hyperactivity disorder: study protocol for a randomized controlled trialM-Health system consisting of the smartphone and the sensor (adapted with permission of movisens). Example from the EI intervention. The “home screen” of the movisensXS app shows four different buttons: (1) Goal of the week; (2) Learn about the exercises; (3) Start exercise; (4) Feedback. If participants press button three (Start exercise), the exercise videos are playedBack to article page