Correlates of physical activity: why are some people physically active and others not?
Bauman AE, Reis RS, Sallis JF, Wells JC, Loos RJ, and Martin BW
Lancet (London, England). Jul 2012
(DOI : 10.1016/S0140-6736(12)60735-1)
Effect of school-based interventions on physical activity and fitness in children and adolescents: a review of reviews and systematic update.
Kriemler S, Meyer U, Martin E, Van Sluijs EM, Andersen LB, and Martin BW
British Journal of Sports Medicine. Aug 2011
(DOI : 10.1136/bjsports-2011-090186)