1. Handbook for physical activity guide to healthy active living. [Egalement disponible en fran ais sous le titre Cahier d'accompagne ment du Guide d'activite physique canadien pour une vie active saine.];Health Canada,1998
2. Exercise during pregnancy and the postnatal period;American College of Obstetricians and Gynecologists (ACOG),1985
3. Exercise during pregnancy: current state of the art;Shangold;Can Fam Physician,1989
4. Effects of maternal undernutrition and heavy physical work during pregnancy on birth weight;Tarfari;Br J Obstet Gynaecol,1980
5. Effect of physical activity before pregnancy on fetuses of mice exercised forcibly during pregnancy;Terada;Teratology,1974