1. Video-based smartphone app ('VIDEA bewegt') for physical activity support in German adults: a study protocol for a single-armed observational study. Issue 3 (31st March 2020) Authors: Fischer, Tillmann; Stumpf, Paul; Reinhardt, Gesine; Schwarz, Peter E H; Timpel, Patrick Journal: BMJ open Issue: Volume 10:Issue 3(2020) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗