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Ethnic differences in BMI among Dutch adolescents: what is the role of screen-viewing, active commuting to school, and consumption of soft drinks and high-caloric snacks?

Singh AS, Chinapaw MJ, Brug J, Kremers SP, Visscher TL, van Mechelen W - Int J Behav Nutr Phys Act (2009)

Bottom Line: In our study sample 121 adolescents (= 13%) were of Non-Western origin.BMI was significantly higher in Non-Western adolescents (boys: 19.9 kg/m2, SD = 3.0, girls: 20.9 kg/m2, SD = 3.8) compared to Dutch adolescents (boys: 18.4 kg/m2, SD = 2.8, girls: 19.0 kg/m2, SD = 3.0).Our results show that time spent on television viewing, active commuting to school, and consumption of fruit juices partially mediated the association between BMI and ethnicity.

View Article: PubMed Central - HTML - PubMed

Affiliation: VU University Medical Center, EMGO-Institute, Department of Public and Occupational Health, Amsterdam, the Netherlands. a.singh@vumc.nl.

ABSTRACT

Background: The threats posed by the rising prevalence of overweight and obesity on public health have been widely acknowledged. Several population groups, which deserve special attention because of their higher prevalence rates, have been identified. These include adolescents and ethnic sub-groups. The aim of the present study was twofold: (1) to assess ethnic differences in body mass index (BMI) and in behaviours that are related to both energy intake and energy expenditure, and (2) to examine whether these behaviours explain the relationship between ethnicity and BMI.

Methods: We conducted a cross-sectional data analysis among 957 Dutch adolescents (mean age = 12.7 years). Body height and weight were measured using a standardized protocol. Adolescents completed a questionnaire on screen-viewing behaviour, physical activity, consumption of sugar-containing beverages, and consumption of high-caloric snacks.

Results: In our study sample 121 adolescents (= 13%) were of Non-Western origin. BMI was significantly higher in Non-Western adolescents (boys: 19.9 kg/m2, SD = 3.0, girls: 20.9 kg/m2, SD = 3.8) compared to Dutch adolescents (boys: 18.4 kg/m2, SD = 2.8, girls: 19.0 kg/m2, SD = 3.0). Our results show that time spent on television viewing, active commuting to school, and consumption of fruit juices partially mediated the association between BMI and ethnicity.

Conclusion: Behaviours related to both energy expenditure and energy intake may contribute to the ethnic differences in BMI in adolescents and should be considered when tailoring overweight prevention programs to ethnic subpopulations.

Trial registration: International Standard Randomised Controlled Trial Number ISRCTN87127361.

No MeSH data available.


Related in: MedlinePlus

Model depicting the associations between ethnicity (independent variable) and BMI (outcome variable), mediated by energy balance-related behaviours (mediator variables). Correlation coefficients are presented in parentheses for boys and girls, respectively
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Figure 3: Model depicting the associations between ethnicity (independent variable) and BMI (outcome variable), mediated by energy balance-related behaviours (mediator variables). Correlation coefficients are presented in parentheses for boys and girls, respectively

Mentions: Results of multiple regression models adjusted for EBRBs as well as the Sobel Test (table 6, criteria 3 and 4) showed that in boys the association between BMI and ethnicity was significantly mediated by television viewing, active transport to school, and consumption of fruit juices (figure 3). In girls, the association between BMI and ethnicity was significantly mediated by television viewing, active transport to school, consumption of fruit juices, and consumption of savoury snacks (figure 3). Adding all EBRBs that met all four criteria resulted in a significant decrease of the regression coefficient, both in boys and girls (figure 3).


Ethnic differences in BMI among Dutch adolescents: what is the role of screen-viewing, active commuting to school, and consumption of soft drinks and high-caloric snacks?

Singh AS, Chinapaw MJ, Brug J, Kremers SP, Visscher TL, van Mechelen W - Int J Behav Nutr Phys Act (2009)

Model depicting the associations between ethnicity (independent variable) and BMI (outcome variable), mediated by energy balance-related behaviours (mediator variables). Correlation coefficients are presented in parentheses for boys and girls, respectively
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2683790&req=5

Figure 3: Model depicting the associations between ethnicity (independent variable) and BMI (outcome variable), mediated by energy balance-related behaviours (mediator variables). Correlation coefficients are presented in parentheses for boys and girls, respectively
Mentions: Results of multiple regression models adjusted for EBRBs as well as the Sobel Test (table 6, criteria 3 and 4) showed that in boys the association between BMI and ethnicity was significantly mediated by television viewing, active transport to school, and consumption of fruit juices (figure 3). In girls, the association between BMI and ethnicity was significantly mediated by television viewing, active transport to school, consumption of fruit juices, and consumption of savoury snacks (figure 3). Adding all EBRBs that met all four criteria resulted in a significant decrease of the regression coefficient, both in boys and girls (figure 3).

Bottom Line: In our study sample 121 adolescents (= 13%) were of Non-Western origin.BMI was significantly higher in Non-Western adolescents (boys: 19.9 kg/m2, SD = 3.0, girls: 20.9 kg/m2, SD = 3.8) compared to Dutch adolescents (boys: 18.4 kg/m2, SD = 2.8, girls: 19.0 kg/m2, SD = 3.0).Our results show that time spent on television viewing, active commuting to school, and consumption of fruit juices partially mediated the association between BMI and ethnicity.

View Article: PubMed Central - HTML - PubMed

Affiliation: VU University Medical Center, EMGO-Institute, Department of Public and Occupational Health, Amsterdam, the Netherlands. a.singh@vumc.nl.

ABSTRACT

Background: The threats posed by the rising prevalence of overweight and obesity on public health have been widely acknowledged. Several population groups, which deserve special attention because of their higher prevalence rates, have been identified. These include adolescents and ethnic sub-groups. The aim of the present study was twofold: (1) to assess ethnic differences in body mass index (BMI) and in behaviours that are related to both energy intake and energy expenditure, and (2) to examine whether these behaviours explain the relationship between ethnicity and BMI.

Methods: We conducted a cross-sectional data analysis among 957 Dutch adolescents (mean age = 12.7 years). Body height and weight were measured using a standardized protocol. Adolescents completed a questionnaire on screen-viewing behaviour, physical activity, consumption of sugar-containing beverages, and consumption of high-caloric snacks.

Results: In our study sample 121 adolescents (= 13%) were of Non-Western origin. BMI was significantly higher in Non-Western adolescents (boys: 19.9 kg/m2, SD = 3.0, girls: 20.9 kg/m2, SD = 3.8) compared to Dutch adolescents (boys: 18.4 kg/m2, SD = 2.8, girls: 19.0 kg/m2, SD = 3.0). Our results show that time spent on television viewing, active commuting to school, and consumption of fruit juices partially mediated the association between BMI and ethnicity.

Conclusion: Behaviours related to both energy expenditure and energy intake may contribute to the ethnic differences in BMI in adolescents and should be considered when tailoring overweight prevention programs to ethnic subpopulations.

Trial registration: International Standard Randomised Controlled Trial Number ISRCTN87127361.

No MeSH data available.


Related in: MedlinePlus