title: Higher percent body fat in young women with lower physical activity level and greater proportion Pacific Islander ancestry.
abstract: Samoan women exhibit high rates of obesity, which can possibly be attenuated through diet and physical activity. Obesity, and body fatness in particular, is associated with increased risk for chronic diseases. Ancestry, physical activity, and dietary patterns have been associated with body composition. Using a cross-sectional design, the relative importance of proportion of Pacific Islander (PI) ancestry, level of physical activity, and macronutrients among healthy women in Honolulu, Hawai'i, ages 18 to 28 years was examined. All data were collected between January 2003 and December 2004. Percent body fat (%BF) was determined by whole body dual energy x-ray absorptiometry (DXA). Nutrient data were derived from a three-day food record. Means and standard deviations were computed for all variables of interest. Bivariate correlation analysis was used to determine correlates of %BF. Multiple regression analysis was used to determine relative contribution of variables significantly associated with %BF. Proportion of PI ancestry was significantly positively associated with %BF (P=0.0001). Physical activity level was significantly negatively associated with %BF (P=0.0006). Intervention to increase physical activity level of young Samoan women may be effective to decrease body fat and improve health. CRC-NIH grant: 0216.
authors.affiliation: Department of Human Nutrition, Food, and Animal Science, University of Hawai'i at Manoa, 1955 East West Road, Honolulu, HI 96822, USA. nate.e.black@gmail.com
authors.forename: Nate
authors.initials: N
authors.lastname: Black
authors.forename: Vanessa
authors.initials: V
authors.lastname: Nabokov
authors.forename: Vinutha
authors.initials: V
authors.lastname: Vijayadeva
authors.forename: Rachel
authors.initials: R
authors.lastname: Novotny
mesh_terms: D000273:Adipose Tissue; D000293:Adolescent; D000328:Adult; D003430:Cross-Sectional Studies; D005260:Female; D006254:Hawaii / Q000453:epidemiology; D006304:Health Status; D006801:Humans; D009043:Motor Activity / Q000502:physiology*; D009752:Nutritional Status; D009765:Obesity / Q000453:epidemiology* / Q000235:genetics; D010139:Pacific Islands / Q000208:ethnology; D012044:Regression Analysis; D018947:Samoa / Q000208:ethnology; D016387:Women's Health; D055815:Young Adult