Article Text

Download PDFPDF

Video-based smartphone app (‘VIDEA bewegt’) for physical activity support in German adults: a study protocol for a single-armed observational study
  1. Tillmann Fischer1,
  2. Paul Stumpf1,
  3. Gesine Reinhardt1,
  4. Peter E H Schwarz1,2,
  5. Patrick Timpel1
  1. 1Department for Prevention and Care of Diabetes, Department of Medicine III, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
  2. 2Paul Langerhans Institute Dresden of the Helmholtz Center Munich at University Hospital and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
  1. Correspondence to Tillmann Fischer; tillmann.fischer{at}


Introduction Insufficient physical activity is one of the most important risk factors for non-communicable diseases. Physical activity should therefore be intensively promoted in all age groups. Several trials suggest that it can be effectively increased through smartphone interventions.

However, few of the smartphone-interventions available on the market have been scientifically evaluated. Therefore, the described study aims to assess the short-term and long-term effects of the smartphone intervention ‘VIDEA bewegt’ to increase physical activity. The trial is designed as a single-armed observational trial to assess effects under real-life conditions.

Methods and analysis The intervention consists of the smartphone-application ‘VIDEA bewegt’, which is a video-based preventative programme to improve physical activity in everyday life. The application contains several features and components including educational videos, documentation of activity and motivational exercises. A sample size of at least 106 participants is aimed for.

The primary objective of this study is to determine the effect of the application on physical activity in German adults. Secondary objectives are to evaluate the self-efficacy, health-related quality of life and usability of ‘VIDEA bewegt’.

Data collection is based on online questionnaires, as well as system-internal recorded data.

Changes of outcomes from baseline to programme completion and follow-up will be calculated.

Ethics and dissemination The Ethics Committee of the Technical University Dresden approved the study on 25 May 2019 (EK 272062019). All data are processed anonymously and stored on servers only accessible by authorised personnel. The results of the study and the results of the usability test are aimed to be published in a scientific journal.

Trial registration number German Clinical Trials Registry (DRKS00017392).

  • self-efficacy
  • prevention
  • smartphone
  • study protocol
  • application
  • preventive medicine

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See:

View Full Text

Statistics from


  • TF, PS and GR are joint first authors.

  • Contributors TF, GR and PS conceived and designed the study protocol, wrote the manuscript, will collect the data and perform the data analysis. PT regularly provided feedback on the overall study protocol, was involved in the development of the usability test, and participated in the writing of the manuscript. PEHS advised and provided feedback on the overall protocol and reviewed the manuscript. All authors reviewed and approved the final version of the manuscript before submission.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.The TUMAINI Institut für Präventions management GmbH provides necessary system-internal data. We acknowledge support by the Open Access Publication Funds of the SLUB/TU Dresden.

  • Competing interests The principal investigator PEHS was involved in the development and implementation of the app 'VIDEA bewegt' as a medical expert. He is responsible for the medical and theoretical background and is shown in the app's videos. He received no payment for his participation in the app.

  • Patient consent for publication Not required.

  • Provenance and peer review Not commissioned; externally peer reviewed.

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.