1. ACSM's guidelines for exercise testing and prescription;Armstrong,2005
2. Aerobic fitness;Armstrong,2008
3. Pathophysiologic factors which limit the exercise capacity of the sick child;Bar-Or;Medicine and Science in Sports and Exercise,1986
4. Pediatric exercise medicine. From physiologic principles to healthcare application;Bar-Or,2004
5. Maximum exercise in children; reference-values for 6–18 years old girls and boys;Binkhorst,1992