Relation between cardiovascular risk factors at adult age, and physical activity during youth and adulthood: the Leuven Longitudinal Study on Lifestyle, Fitness and Health. - Lefevre,J.; Philippaerts,R.; Delvaux,K.; Thomis,M.; Claessens,A.L.; Lyses,R.; Renson,R.; Vanden Eynde,B.; Vanreusel,B.; Beunen,G. (Int J Sports Med, 2002)