Effect of activity and television viewing on BMI z-score in early adolescents in Turkey
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Television, computer and other causes of increased inactivity are reported to be among the major causes of obesity. This cross-sectional study was aimed to evaluate the effect of television viewing and other daily activities on body mass index (BMI) z-score of early adolescents.
A total of 860 students and their parents (581) from different socioeconomic level schools were included. They were instructed to fill in a self-designed questionnaire. Weight and height were measured, and BMI z-scores were calculated.
BMI z-score was higher in boys and in those attending high socioeconomic level schools. Children with a BMI z-score >2SD watched television (2.5±0.9 h/day) longer than those with <-2SD (1.6±0.8 h/day) (P=0.027). The three categories (<-2SD, -2SD-2SD, >2SD) differed significantly according to maternal (P<0.05) and paternal (P<0.005) BMI. Linear logistic regression analysis revealed that socioeconomic level, maternal BMI and paternal BMI are factors affecting BMI z-score significantly.
Genetic and/or family environment which may affect the nutrition and activity of adolescents seems to be the most important factor affecting their BMI z-score.
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- Effect of activity and television viewing on BMI z-score in early adolescents in Turkey
World Journal of Pediatrics
Volume 7, Issue 1 , pp 37-40
- Cover Date
- Print ISSN
- Online ISSN
- SP Children’s Hospital, Zhejiang University School of Medicine
- Additional Links
- body mass index
- Author Affiliations
- 1. Department of Pediatrics, Social Pediatrics Unit, Hacettepe University Faculty of Medicine, Ankara, Turkey
- 4. Department of Pediatrics, Social Pediatrics Unit, Hacettepe University Faculty of Medicine, 06100, Sıhhıye, Ankara, Turkey
- 2. Department of Pediatrics, Başkent University Faculty of Medicine, Ankara, Turkey
- 3. Department of Social Pediatrics, Hacettepe University Institute of Child Health, Ankara, Turkey