From the *Body@Work, Research Centre Physical Activity, Work and Health; TNO-VUmc; †Department of Public and Occupational Health and Institute for Research in Extramural Medicine, VU University Medical Center; ‡Research Center for Insurance Medicine AMC-UWV-VUmc; §Institute for Research in Extramural Medicine, VU University Medical Center; ∥Department of Clinical Epidemiology and Biostatistics, VU University Medical Center; and ¶Disability Prevention Research and Training Centre, Université de Sherbrooke, Longueuil.
Acknowledgment date: December 5, 2005. First revision date: March 1, 2006. Acceptance date: April 24, 2006.
Supported by the Netherlands Organization for Health Research and Development (ZonMw), Dutch Ministries of Health, Welfare and Sports and of Social Affairs.
The manuscript submitted does not contain information about medical device(s)/drug(s).
Federal funds were received in support of this work. No benefits in any form have been or will be received from a commercial party related directly or indirectly to the subject of this manuscript.
Trial registry information: International Standard Randomized Controlled Trial No. 60233560.
Address correspondence and reprint requests to Johannes R. Anema, MD, PhD, Department of Public and Occupational Health and Institute for Research in Extramural Medicine, VU University Medical Center, Van der Boechorststraat 7, 1081 BT Amsterdam, The Netherlands; E-mail: [email protected]