1. Prevalence of Obesity Among Children and Adolescents in the United States and Canada;Carroll,2015
2. Is the Canadian childhood obesity epidemic related to physical inactivity?;Tremblay;Int J Obes,2003
3. Statistics Canada. Directly measured physical activity of children and youth, 2012 and 2013: results from the Canadian Health Measures Survey. www.statcan.gc.ca/daily-quotidien/150218/dq150218c-eng.pdf. Published 2015. Accessed October 16, 2017.
4. HHS. Healthy People 2020: physical activity. www.healthypeople.gov/2020/topics-objectives/topic/physical-activity. Published 2010. Accessed September 22, 2017.
5. Active transportation to school;McDonald;Am J Prev Med,2007