Implementation and Effects of Information Technology-Based and Print-Based Interventions to Promote Physical Activity Among Community-Dwelling Older Adults: Protocol for a Randomized Crossover Trial

Claudia R Pischke   ^{1 *} , PhD ;   Claudia Voelcker-Rehage   ^{2 *} , PhD ;   Manuela Peters   ^{3 *} , MSc ;   Tiara Ratz   ^{4 *} , MSc ;   Hermann Pohlabeln   ^{3 *} , PhD ;   Jochen Meyer   ^{5 *} , PhD ;   Kai von Holdt   ^{5 *} , BSc ;   Sonia Lippke   ^{4 *} , PhD

¹ Institute of Medical Sociology, Centre for Health and Society, Medical Faculty, University of Duesseldorf, Duesseldorf, Germany

² Institute of Human Movement Science and Health, Chemnitz University of Technology, Chemnitz, Germany

³ Leibniz Institute for Prevention Research and Epidemiology – BIPS, Bremen, Germany

⁴ Jacobs University Bremen, Bremen, Germany

⁵ OFFIS – Institute for Information Technology, Oldenburg, Germany

*all authors contributed equally