An Internet-Based Physical Activity Intervention to Improve Quality of Life of Inactive Older Adults: A Randomized Controlled Trial

Karen Broekhuizen   ^{1, 2} , PhD ;   Jelle de Gelder   ¹ , MD, MSc ;   Carolien A Wijsman   ¹ , MD, PhD ;   Liselotte W Wijsman   ¹ , MD,MSc ;   Rudi GJ Westendorp   ³ , MD,PhD ;   Evert Verhagen   ⁴ , PhD ;   Pieternella E Slagboom   ⁵ , PhD ;   Anton J de Craen   ^{1 †} , PhD ;   Willem van Mechelen   ⁴ , MD,PhD ;   Diana van Heemst   ¹ , PhD ;   Frans van der Ouderaa   ³ , PhD ;   Simon P Mooijaart   ^{1, 2} , MD,PhD

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

² Institute for Evidence-Based Medicine in Old Age, Leiden, The Netherlands

³ Leyden Academy on Vitality and Ageing, Leiden, The Netherlands

⁴ ExtraMuraal Gezondheids Onderzoek (EMGO+) Institute for Health and Care Research, Department of Public and Occupational Health, Vrije Universiteit (VU) University Medical Center, Amsterdam, The Netherlands

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

†deceased