Web-Based Versus Print-Based Physical Activity Intervention for Community-Dwelling Older Adults: Crossover Randomized Trial.
Claudia R PischkeClaudia Voelcker-RehageTiara RatzManuela PetersChristoph BuckJochen MeyerKai von HoldtSonia LippkePublished in: JMIR mHealth and uHealth (2022)
German Clinical Trials Register DRKS00016073; https://www.drks.de/drks_web/navigate.do?navigationId=trial.HTML&TRIAL_ID=DRKS00016073.