References
- American Academy of Pediatrics, Committee on Sports Medicine and Fitness . 2000 . Intensive training and sports specialization in young athletes . Pediatrics , 106 ( 1 ) : 154 – 157 .
- American Heart Association. 2008 . Exercise, physical activity and children: AHA scientific position Retrieved September 29, 2008, from http://www.americanheart.org/presenter.jhtml?identifier=4596
- Centers for Disease Control and Prevention. 2007 . Youth risk behavior surveillance system Retrieved September 24, 2008, from http://www.cdc.gov/HealthyYouth/yrbs/
- Farrey , T. 2008 . Treading water . ESPN The Magazine , 11 ( 18 ) Sept. 8 : 128 – 133 .
- Mansfield , M. J. and Emans , S. J. 2006 . Growth in female gymnasts: Should training decrease during puberty? . The Journal of Pediatrics , 122 ( 2 ) : 237 – 240 .
- National Association for Sport and Physical Education. 2004 . Physical activity for children: A statement of guidelines for children ages 5–12, , 2nd ed. Reston, VA : Author. .
- Ogden , C. L. , Carroll , M. D. and Flegal , K. M. 2008 . High body mass index for age among US children and adolescents, 2003–2006 . Journal of the American Medical Association , 299 : 2401 – 2405 .
- Watts , J. 2002 . Perspectives on sport specialization . Journal of Physical Education, Recreation & Dance , 73 ( 8 ) : 32 – 37 . 50