Effects of a Web-Based Intervention on Physical Activity and Metabolism in Older Adults: Randomized Controlled Trial

Carolien A Wijsman   ¹ , MD ;   Rudi GJ Westendorp   ^{1, 2} , MD, PhD ;   Evert ALM Verhagen   ³ , PhD ;   Michael Catt   ⁴ , BSc ;   P Eline Slagboom   ⁵ , PhD ;   Anton JM de Craen   ^{1, 6} , PhD ;   Karen Broekhuizen   ⁷ , PhD ;   Willem van Mechelen   ³ , MD, PhD ;   Diana van Heemst   ^{1, 6} , PhD ;   Frans van der Ouderaa   ^{2, 6} , PhD ;   Simon P Mooijaart   ^{1, 6, 7} , MD, PhD

¹ Department of Gerontology and Geriatrics, Leiden University Medical Center, Leiden, Netherlands

² Leyden Academy of Vitality and Ageing, Leiden, Netherlands

³ Department of Public and Occupational Health, EMGO+Institute, VU University Medical Center, Amsterdam, Netherlands

⁴ Institute for Ageing and Health, Newcastle University, Newcastle upon Tyne, United Kingdom

⁵ Department of Medical Statistics, Molecular Epidemiology Section, Leiden University Medical Center, Leiden, Netherlands

⁶ Netherlands Consortium for Healthy Ageing, Leiden, Netherlands

⁷ Institute for Evidence-Based Medicine in Old Age, IEMO, Leiden, Netherlands