Effect of activity and television viewing on BMI z-score in early adolescents in Turkey

Özmert, Elif Nursel; Оздемир, Рамазан; Pektas, Ayhan; Üçkardeş, Yasemin; Yurdakök, Kadriye

doi:10.1007/s12519-011-0243-2

Cited by 10 publications

(6 citation statements)

References 23 publications

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“…The proportion of obese and overweight adolescents watching TV for more than 2 hours/day was higher as compared to normal-weight ones. A study by Ozmert et al (21) reported similar results. Children with a BMI z-score >2 SD watched TV for longer periods than those with BMI z-scores < -2 SD.…”

Section: Discussionsupporting

confidence: 55%

Prevalence of Obesity and Associated Risk Factors Among Adolescents in Ankara, Turkey.

Ercan¹,

Dallar²,

Önen³

et al. 2012

Jcrpe

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Objective: The purpose of this study was to investigate the prevalence of and the risk factors associated with obesity among adolescents in Ankara, Turkey.Methods: The study was conducted in 26 schools in Ankara during the time period from September 2010 to March 2011. A total of 8848 adolescents aged 11-18 years were chosen using a population-based stratified cluster sampling method. Body mass index (BMI) of the participants was compared with the BMI references for Turkish children and adolescents to estimate the prevalence of overweight and obesity. A standardized questionnaire aiming to determine the sociodemographic characteristics, computer use, television (TV) watching, physical activity, and presence of obesity in the family was applied to the study group.Results: The results showed that the overall prevalence of obesity among adolescents was 7.7% (8.4 % for females and 7.0% for males). It was observed that BMI increased as computer use increased. A greater proportion of the overweight and obese adolescents watched TV and use computer for more than 2 hours/day as compared to their normal-weight counterparts. The normal-weight subjects were found to show a higher participation in regular physical activity. Obesity prevalence among the families of obese adolescents was 56.5%.Conclusions: The prevalence of adolescent obesity in Ankara, Turkey is lower as compared to many European countries and to the United States. Computer use, watching TV, physical activity and family factors are important risk factors for obesity.Conflict of interest:None declared.

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Section: Discussionsupporting

confidence: 55%

Prevalence of Obesity and Associated Risk Factors Among Adolescents in Ankara, Turkey.

Ercan¹,

Dallar²,

Önen³

et al. 2012

Jcrpe

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“…17,49 Some studies did not specifically define obesity based on BMI, but defined overweight using Centers for Disease Control and Prevention growth chart data (≥85th BMI percentile). [50][51][52][53][54][55][56][57][58] Electing not to categorize participants into BMI groups, several studies modeled the mean BMI (raw BMI, BMI z score, or BMI percentile), 24,[59][60][61][62][63][64][65][66][67][68][69][70][71][72][73] or the median BMI and other percentiles of the BMI distribution. 10,74,75 Several studies included in this review measured waist circumference to provide an estimate of abdominal fat mass*; some measured skinfold thickness to provide an estimate of subcutaneous fat mass, or converted skinfold thickness into percent body fat using prediction equations.…”

Section: Obesity Outcomesmentioning

confidence: 99%

Sedentary Behavior and Health Outcomes in Children and Adolescents

Mitchell

Byun

2013

American Journal of Lifestyle Medicine

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The purpose of this review was to summarize findings from epidemiological studies that determined if sedentary behavior was associated with obesity, metabolic risk factors, and cardiorespiratory fitness in children and adolescents. We noted if studies adjusted for moderate-to-vigorous physical activity (MVPA), dietary intakes, and/or sleep duration. Articles were identified through PubMed using the search terms: (sedentary OR sitting OR television) AND (adiposity OR blood pressure OR body mass index OR cardiometabolic OR metabolic risk OR waist circumference). The search was limited to ages 6 to 18 years, humans, and published between January 1, 2008 and September 26, 2012. Cross-sectional and longitudinal studies observed associations between more sedentary behavior, especially screen-based sedentary behavior, and measures of obesity; and most associations were independent of MVPA and dietary intake. Crosssectional and longitudinal studies reported associations between screenbased sedentary behavior and lower cardiorespiratory fitness, and most associations were independent of MVPA and obesity. Cross-sectional studies observed associations between more screen-based and objectively measured sedentary behavior and lower insulin sensitivity; and most associations were independent of MVPA and obesity. There was little-tono evidence that sedentary behavior was associated with increased blood pressure and increased blood lipids.

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“…In addition, research has found significant but varying associations of body weight and socioeconomic status (SES) in Turkey. Several studies, including those aforementioned, have indicated higher obesity rates among children with higher SES while the reverse may be the case among adults (9,(12)(13)(14). There is also some evidence to suggest that the relationship between SES and obesity may differ by region within Turkey, at least in adults (15).…”

Section: Introductionmentioning

confidence: 97%

Prevalence of childhood obesity and related parental factors across socioeconomic strata in Ankara, Turkey

Yardim

Özcebe

Araz

et al. 2019

East Mediterr Health J

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Background: Among low-and middle-income nations, the highest prevalence of child overweight and associated metabolic disorders has been found in Middle Eastern and Eastern European countries. Obesity has been on the rise in Turkey and past research has shown regional variations among adults. However, the prevalence of childhood obesity in different socioeconomic groups in the largest metropolitan areas in the country has not been reported. Aims: This study aimed to investigate the prevalence of child obesity with a population-representative, SES-stratified random sample with objective measures of body mass index (BMI) in the capital city of Turkey. Methods: Weight status was measured by the WHO growth curve and analyzed by socioeconomic status (SES), sex, and parental factors in a population-representative sample of 2066 parent-child dyads. Chi-square and logistic regression were conducted. Results: Rates of overweight and obesity were 21.2% and 14.6% (35.8% combined) but significantly higher in high (24.5% and 18.9%) vs. low SES (20.1% and 13.8%) (P = 0.02). Boys were at higher risk for obesity than girls, especially in high vs. low SES (Odds Ratio [OR] = 3.0 [95% CI: 1.4-6.5] vs. 1.7 [95% CI: 1.2-2.5]). Having both parents being overweight or obese increased the risk for obesity, particularly in medium and high SES (OR = 5.8 [95% CI: 2.3-14.1]) and 6.3 (95% CI: 1.5-26.2). Conclusions: Higher maternal education was a risk factor in low-to-medium but not high SES. In Ankara, child overweight and obesity appears to be 1.5 times more prevalent than national estimates. Higher SES may signify greater exposure to an obesogenic environment and greater obesity risk.

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Effect of activity and television viewing on BMI z-score in early adolescents in Turkey

Abstract: 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.

Cited by 10 publications

References 23 publications

Prevalence of Obesity and Associated Risk Factors Among Adolescents in Ankara, Turkey.

Prevalence of Obesity and Associated Risk Factors Among Adolescents in Ankara, Turkey.

Sedentary Behavior and Health Outcomes in Children and Adolescents

Prevalence of childhood obesity and related parental factors across socioeconomic strata in Ankara, Turkey

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