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PPT : The Physical Inactivity Epidemic: Are Canadian Children at Risk?
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* 63% of 5-17 y.o. not active enough for optimal growth * Adolescents less active than children 2-12 years old (33% vs 43%) * Decline in activity with age and gender (girls at 14-15 yrs vs boys 16-17 yrs) * Girls less active than boys: 30% vs 50% at 5-12 yrs vs 25% vs 40% at 13-17 yrs * Girls – less intense physical activities
* Physical Activity Monitor 1999. CFLRI
Health Implications of Physical Inactivity
* WHO definition of health: comprehensive state of physical, psychological, and social well beingo Childhood obesityo Type 2 diabeteso Hypertensiono Osteoporosiso Depressiono Smoking/alcohol/drugso Adolescent pregnancy
* ~ 3 million USA youths affected * Associated with obesity * Tracking from adolescence into adulthood established:~ 50% boys, ~ 40% girls remained
* Anderson and Haraldsdottir J Int Med 1993;234:309-315
* 1 in 4 women > 50 y with osteoporosis * Annual cost hip fracture treatment $650 million * * Bone accretion in first 20 yrs major factor in final bone mass + bone health later yrs
*Wiktorowicz et al. Osteoporos Int 2001;12(4):271-8
Canadian Youth Mental Health – Depression
* 113,000 Canadian 12-17 year olds depressed * Suicide 2nd leading cause of injury-related death in adolescence * 35% grade 10 students depressed 1 or more times/week in prior 6 months (1998) *
*Trends in Health of Canadian Youth. Health Canada 1999
Canadian Youth Mental Health – Smoking
* Average age onset smoking ? from 16 to 12 years over past 2 decades* * 1998 grade 10 smokers – 28% boys, 34% girls** * Weekly smokers unlikely to quit thus become adult smokers***
*CPS position statement Ped & child health 2001;6(2):89-95 **Trends in Health of Canadian Youth. Health Canada, 1999 ***Kelder et al Am J Public
Canadian Youth Mental Health – Drugs *
* 1998 grade 10 students > 90% had tried alcohol * 43% grade 10’s “very drunk” > 2 x in 1998 * 1998 grade 10’s: 42% MJ, 13% LSD, 6% cocaine, 9% amphetamines
* Trends in Health of Canadian Youth. Health Canada 1999
Canadian Youth Mental Health – Delinquency
* ~ 20% School drop out rate in 1991 * ? Youth violence 106% vs ? 45% adults 1986-1991* * 75,000 youths/yr charged with crimes in Canadian courts
* Smart et al J Psychoactive Drugs 1997;29(4):369-373
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