Joint association of screen time and physical activity with anthropometric measures in Iranian children and adolescents: the weight disorders survey of the CASPIAN-IV study
-
Shirin Djalalinia
,
Negar Rezaei
Abstract
Background:
This study aims to assess the joint association of screen time (ST) and physical activity (PA) with anthropometric indices among Iranian children and adolescents.
Methods:
In this national study, 23,183 school students, aged 6–18 years, were studied. By using a multi-stage cluster sampling method, they were selected from rural and urban areas of 30 provinces of Iran. ST and PA were assessed by self-administered validated questionnaires. Height, weight, hip and waist circumferences (WC) were measured according to standard protocols, and body mass index (BMI) was calculated. ST of <2 h per day was categorized as “low” and ≥2 h per day as “high”. PA levels were obtained by a 7-day recall of sports or activities that made participants sweat or make their legs feel tired, or games that made them breathe heavily. Using this questionnaire, the score of 1–1.9 was categorized as “low” and scores between 2 and 5 as “high” PA. Logistic regression analyses were used to evaluate the joint association of PA and ST categories with odds of anthropometric measures.
Results:
In both genders, those students categorized as “Low PA & High ST” had the highest levels of BMI z-scores (boys: 0.15±1.12, girls: 0.17±1.08), WC (boys: 69.93±13.89 cm, girls: 67.30±11.26 cm), and hip circumference (boys: 82.41±13.90 cm, girls: 84.05±13.7 cm), as well as the highest prevalence of overweight (boys: 15.32%, girls: 14.04%) (p<0.001 in all comparisons). In linear multivariate model, students with “High PA & High ST” had significant increased levels of z-scores for BMI, WC and hip circumference (p<0.05).
Conclusions:
The current findings underscore the importance of reducing ST along with increasing PA for prevention and control of excess weight in children and adolescents.
Acknowledgments
This nationwide survey was conducted in Iran with the cooperation of the Ministry of Health and Medical education, Ministry of Education and Training, Child Growth and Development Research Center of Isfahan University of Medical Sciences, and Endocrinology and Metabolism Research Institute of Tehran University of Medical Sciences.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Employment or leadership: None declared.
Honorarium: None declared.
Competing interests: The funding organization(s) played no role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the report for publication.
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©2017 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Original Articles
- High prevalence of organ specific autoantibodies in Indian type 1 diabetic patients
- Improved metabolic control in tetrahydrobiopterin (BH4), responsive phenylketonuria with sapropterin administered in two divided doses vs. a single daily dose
- Excessive weight gain in exclusively breast-fed infants
- Comparison of Tanner staging of HIV-infected and uninfected girls at the University of Nigeria Teaching Hospital, Ituku/Ozalla, Enugu, Nigeria
- Joint association of screen time and physical activity with anthropometric measures in Iranian children and adolescents: the weight disorders survey of the CASPIAN-IV study
- Assessment of insulin like growth factor-1 and IGF binding protein-3 in healthy Indian girls from Delhi and their correlation with age, pubertal status, obesity and thyroid hormonal status
- Impact of discontinuation of growth hormone treatment on lipids and weight status in adolescents
- Clinical, biochemical and genetic features with nonclassical 21-hydroxylase deficiency and final height
- A combined approach to generate laboratory reference intervals using unbalanced longitudinal data
- Clinical evaluation and mutational analysis of GALK and GALE genes in patients with galactosemia in Greece: one novel mutation and two rare cases
- Case Reports
- Pediatric toxic polycystic thyroid
- In utero virilization secondary to a maternal Krukenberg tumor: case report and review of literature
- Postprandial hyperinsulinemic hypoglycemia in a child as a late complication of esophageal reconstruction
- Long-term follow-up of a child with Klinefelter syndrome and achondroplasia from infancy to 16 years
Articles in the same Issue
- Frontmatter
- Original Articles
- High prevalence of organ specific autoantibodies in Indian type 1 diabetic patients
- Improved metabolic control in tetrahydrobiopterin (BH4), responsive phenylketonuria with sapropterin administered in two divided doses vs. a single daily dose
- Excessive weight gain in exclusively breast-fed infants
- Comparison of Tanner staging of HIV-infected and uninfected girls at the University of Nigeria Teaching Hospital, Ituku/Ozalla, Enugu, Nigeria
- Joint association of screen time and physical activity with anthropometric measures in Iranian children and adolescents: the weight disorders survey of the CASPIAN-IV study
- Assessment of insulin like growth factor-1 and IGF binding protein-3 in healthy Indian girls from Delhi and their correlation with age, pubertal status, obesity and thyroid hormonal status
- Impact of discontinuation of growth hormone treatment on lipids and weight status in adolescents
- Clinical, biochemical and genetic features with nonclassical 21-hydroxylase deficiency and final height
- A combined approach to generate laboratory reference intervals using unbalanced longitudinal data
- Clinical evaluation and mutational analysis of GALK and GALE genes in patients with galactosemia in Greece: one novel mutation and two rare cases
- Case Reports
- Pediatric toxic polycystic thyroid
- In utero virilization secondary to a maternal Krukenberg tumor: case report and review of literature
- Postprandial hyperinsulinemic hypoglycemia in a child as a late complication of esophageal reconstruction
- Long-term follow-up of a child with Klinefelter syndrome and achondroplasia from infancy to 16 years
