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Evaluation of an Interactive Web-Based Health Program for Weight Loss—A Randomized Controlled Trial

Author

Listed:
  • Urs Alexander Fichtner

    (Section of Health Care Research and Rehabilitation Research, Institute of Medical Biometry and Statistics, Faculty of Medicine, Medical Center—University of Freiburg, 79106 Freiburg, Germany)

  • Christoph Armbruster

    (Section of Health Care Research and Rehabilitation Research, Institute of Medical Biometry and Statistics, Faculty of Medicine, Medical Center—University of Freiburg, 79106 Freiburg, Germany)

  • Martina Bischoff

    (Section of Health Care Research and Rehabilitation Research, Institute of Medical Biometry and Statistics, Faculty of Medicine, Medical Center—University of Freiburg, 79106 Freiburg, Germany)

  • Phillip Maiwald

    (Section of Health Care Research and Rehabilitation Research, Institute of Medical Biometry and Statistics, Faculty of Medicine, Medical Center—University of Freiburg, 79106 Freiburg, Germany)

  • Matthias Sehlbrede

    (Section of Health Care Research and Rehabilitation Research, Institute of Medical Biometry and Statistics, Faculty of Medicine, Medical Center—University of Freiburg, 79106 Freiburg, Germany)

  • Iris Tinsel

    (Section of Health Care Research and Rehabilitation Research, Institute of Medical Biometry and Statistics, Faculty of Medicine, Medical Center—University of Freiburg, 79106 Freiburg, Germany)

  • Judith Brame

    (Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Germany)

  • Jan Kohl

    (Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Germany)

  • Daniel König

    (Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Germany
    Department of Sport Science, Institute for Nutrition, Sports and Health, University of Vienna, 1150 Vienna, Austria
    Department of Nutritional Sciences, Institute for Nutrition, Sports and Health, University of Vienna, 1090 Vienna, Austria)

  • Reinhard Fuchs

    (Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Germany)

  • Ramona Wurst

    (Department of Sport and Sport Science, University of Freiburg, 79117 Freiburg, Germany)

  • Erik Farin-Glattacker

    (Section of Health Care Research and Rehabilitation Research, Institute of Medical Biometry and Statistics, Faculty of Medicine, Medical Center—University of Freiburg, 79106 Freiburg, Germany)

Abstract

Personal behavior patterns, such as unhealthy diet and lack of physical activity, lead to the development of overweight and obesity. These are associated with other comorbidities, reduced quality of life, premature frailty and increased mortality. Personalized web-based interventions are promising in inducing behavioral change leading to effective reductions in body weight at relatively low costs. However, the long-term effects have not been thoroughly investigated. This work evaluates the effectiveness of web-based interactive weight loss coaching and compares it to a non-interactive web-based health program. Therefore, a randomized controlled trial (RCT) was implemented, measuring primary and secondary outcomes at four time points (program start; end of the 12-week-program; 6 months after program end, 12 months after program end). The net sample covered 1499 subjects in the intervention group and 1492 in the control group. On average, the IG was 43 years old (±13.6), 80.1% male, and had 86.4 kg body weight (±16.1) at baseline. The CG was 42.7 years old (±13.9), 79.5% male and had a mean body weight of 86.1 (±15.7). Multilevel analyses with fixed effects were carried out both from the perspective of an intention-to-treat (ITT) and a complete cases approach (CCA). In sum, our adjusted models suggest a weight loss of 0.4 kg per time point. At the end of the program, significant differences in weight loss in % to baseline (delta M = 1.8 in the CCA) were observed in favor of the intervention group. From a long-term perspective, no superiority of the intervention group in comparison to the control group could be found. More intensive use of the program was not statistically associated with higher weight loss.

Suggested Citation

  • Urs Alexander Fichtner & Christoph Armbruster & Martina Bischoff & Phillip Maiwald & Matthias Sehlbrede & Iris Tinsel & Judith Brame & Jan Kohl & Daniel König & Reinhard Fuchs & Ramona Wurst & Erik Fa, 2022. "Evaluation of an Interactive Web-Based Health Program for Weight Loss—A Randomized Controlled Trial," IJERPH, MDPI, vol. 19(22), pages 1-16, November.
  • Handle: RePEc:gam:jijerp:v:19:y:2022:i:22:p:15157-:d:975340
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    References listed on IDEAS

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    1. Judith Brame & Jan Kohl & Ramona Wurst & Reinhard Fuchs & Iris Tinsel & Phillip Maiwald & Urs Fichtner & Christoph Armbruster & Martina Bischoff & Erik Farin-Glattacker & Peter Lindinger & Rainer Bred, 2022. "Health Effects of a 12-Week Web-Based Lifestyle Intervention for Physically Inactive and Overweight or Obese Adults: Study Protocol of Two Randomized Controlled Clinical Trials," IJERPH, MDPI, vol. 19(3), pages 1-21, January.
    2. Carmen Galani & Heinz Schneider, 2007. "Prevention and treatment of obesity with lifestyle interventions: review and meta-analysis," International Journal of Public Health, Springer;Swiss School of Public Health (SSPH+), vol. 52(6), pages 348-359, December.
    3. Maximilian Tremmel & Ulf-G. Gerdtham & Peter M. Nilsson & Sanjib Saha, 2017. "Economic Burden of Obesity: A Systematic Literature Review," IJERPH, MDPI, vol. 14(4), pages 1-18, April.
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