Van Sluijs EM, van Poppel MN, Twisk JW, Chin A Paw MJ, Calfas KJ, van Mechelen W
American Journal of Public Health. Sep 2005
(DOI : 10.2105/AJPH.2004.044537)
Physical activity measurements affected participants' behavior in a randomized controlled trial.
Van Sluijs EM, van Poppel MN, Twisk JW, van Mechelen W
Journal of clinical epidemiology. Jan 2005
(DOI : 10.1016/j.jclinepi.2005.08.016)
Physical activity and cardiovascular disease risk profile in women.
Pols MA, Peeters PH, Twisk JW, Kemper HC, Grobbee DE
American Journal of Epidemiology. Aug 1997
(DOI : 10.1093/oxfordjournals.aje.a009273)