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- Chaparro, M. Pia, et al.
(författare)
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Effects of Parental Nativity and Length of Stay in the US on Fruit and Vegetable Intake Among WIC-Enrolled Preschool-Aged Children
- 2015
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Ingår i: Journal of Immigrant and Minority Health. - : Springer Science and Business Media LLC. - 1557-1912 .- 1557-1920. ; 17:2, s. 333-338
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Tidskriftsartikel (refereegranskat)abstract
- Exposure to US culture is negatively associated with fruits and vegetables (F&V) intake. Our goal was to investigate how parent's nativity and length of stay in the US influences preschoolers' F&V intake. We analyzed survey data from 2,352 children, aged 36-60 months, who participate in the Supplemental Nutrition Program for Women, Infants and Children (WIC) in Los Angeles County. Using multiple linear regression, we examined children's F&V intake by parent's nativity and years in the US, adjusting for possible confounders. Children of foreign born parents who had lived in the US for < 10 years consumed fewer servings of vegetables than children of US born parents and of foreign born parents who had lived in the US for a parts per thousand yen10 years. Children of newer immigrant families may be at greater risk for consuming poor-quality diets. Research to identify determinants of poor diet quality among children of immigrant families may increase the effectiveness of WIC in addressing this population's nutritional needs.
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| 2. |
- Chaparro, M. Pia, et al.
(författare)
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Influences of the neighbourhood food environment on adiposity of low-income preschool-aged children in Los Angeles County : a longitudinal study
- 2014
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Ingår i: Journal of Epidemiology and Community Health. - : BMJ. - 0143-005X .- 1470-2738. ; 68:11, s. 1027-1033
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Tidskriftsartikel (refereegranskat)abstract
- Background Few studies have examined the association between the food environment and adiposity in early childhood, a critical time for obesity prevention. The objective of this study was to examine the longitudinal association between neighbourhood food environment and adiposity among low-income preschool-aged children in a major metropolitan region in the USA. Methods The study sample was 32 172 low-income preschool-aged children in Los Angeles County who had repeated weight and height measurements collected between ages 2 and 5 years through a federal nutrition assistance programme. We conducted multilevel longitudinal analyses to examine how spatial densities of healthy and unhealthy retail food outlets in the children's neighbourhoods were related to adiposity, as measured by weight-for-height z-score (WHZ), while controlling for neighbourhood-level income and education, family income, maternal education, and child's gender and race/ethnicity. Results Density of healthy food outlets was associated with mean WHZ at age 3 in a non-linear fashion, with mean WHZ being lowest for those exposed to approximately 0.7 healthy food outlets per square mile and higher for lesser and greater densities. Density of unhealthy food outlets was not associated with child WHZ. Conclusions We found a non-linear relationship between WHZ and density of healthy food outlets. Research aiming to understand the sociobehavioural mechanisms by which the retail food environment influences early childhood obesity development is complex and must consider contextual settings.
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| 4. |
- Sanchez-Dominguez, M., et al.
(författare)
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Synthesis of Pt Nanoparticles in oil-in-water microemulsions : Phase Behavior and Effect of Formulation Parameters on Nanoparticle Characteristics
- 2011
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Ingår i: Journal of Dispersion Science and Technology. - : Informa UK Limited. - 0193-2691 .- 1532-2351. ; 32:12, s. 1765-1770
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Tidskriftsartikel (refereegranskat)abstract
- Pt nanoparticles were synthesized in oil-in-water (o/w) microemulsions, in contrast to the typically used water-in-oil microemulsion method. The new strategy implies the use of a Pt organometallic precursor (1,5-cyclooctadiene dimethyl platinum (II)), dissolved in nanometre-scale oil droplets, stabilized by surfactant, and dispersed in a continuous aqueous phase. Three different nonionic microemulsion systems were used. Characterization studies demonstrate that small, nanocrystalline Pt nanoparticles were obtained. The particle size and agglomeration was dependant on the microemulsion system used and its composition. The obtained results demonstrate the feasibility of this approach for the controlled synthesis of Pt nanoparticles with potential for catalytic purposes.
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