Programming Obesity and Poor Fitness: The Long-term Impact of Childhood Television
Article first published online: 6 SEP 2012
2008 North American Association for the Study of Obesity (NAASO)
Volume 16, Issue 6, pages 1457–1459, June 2008
How to Cite
Landhuis, C. E., Poulton, R., Welch, D. and Hancox, R. J. (2008), Programming Obesity and Poor Fitness: The Long-term Impact of Childhood Television. Obesity, 16: 1457–1459. doi: 10.1038/oby.2008.205
- Issue published online: 6 SEP 2012
- Article first published online: 6 SEP 2012
- Received March 04, 2007; Accepted August 27, 2007
Objective: To assess whether the long-term effects of childhood television viewing on BMI and cardiorespiratory fitness are mediated by adult viewing.
Methods and Procedures: This prospective study included an unselected birth cohort of 1,037 participants (535 men) born in Dunedin, New Zealand in 1972/1973. Hours of television viewing on weekdays were reported at ages 5, 7, 9, 11, 13, 15, and 32 years. BMI and cardiorespiratory fitness were measured at age 32 years.
Results: Both childhood and adult television viewing times were significantly associated with higher BMI and lower cardiorespiratory fitness at age 32 years. Childhood television viewing was a better predictor of adult BMI and fitness than adult viewing and remained a significant predictor of these outcomes after adjusting for adult viewing time. After adjusting for adult viewing, the odds (95% confidence interval) of adult obesity increased by a factor of 1.25 (1.01, 1.53) and poor fitness increased by a factor of 1.40 (1.16, 1.70) for each hour of mean weekday television viewing during childhood.
Discussion: The association between childhood television viewing and obesity and poor fitness in adulthood is not mediated by adult viewing. The detrimental health effects of watching too much television during childhood persist into adulthood. Attempts to reduce adult obesity and poor fitness by modifying television viewing habits need to begin in childhood.