Document Type

Thesis - University Access Only

Award Date

2004

Degree Name

Master of Science (MS)

Department / School

Nutrition, Food Science, and Hospitality

Abstract

The role of body fat distribution and lifestyle factors, such as physical activity and diet, on lipids are not well understood. The purpose of this study is to determine the effect of body fat distribution on plasma lipid and lipoprotein concentrations in a population of eastern South Dakota women and men who are participating in the South Dakota Rural Bone Health Study (SDRBHS). The SDRBHS is an NIH-fimded longitudinal study designed to determine bony density and later bone loss in rural versus non-rural populations aged 20-65 years old. Our hypothesis is that truncal adiposity will adversely impact lipid concentrations, independent of other lifestyle factors. This data analysis is cross-sectional and predictor variables include truncal adiposity, physical activity, and diet. Truncal adiposity, measured as both the percent of total body fat that is located in the trunk region and the percent fat of the trunk region, is determined byDXA. A manual analysis of regional fat distribution is also utilized in a randomly selected subset after stratifying by total percent fat. Physical activity is assessed using a modified Paffenbarger Physical Activity Questionnaire. Twenty-four hour dietary recalls are used to estimate nutrient intakes using Nutritionist Pro software. General linear models are used to determine the role of truncal adiposity on lipid parameters. Covariates such as age, gender, menopause status, height, weight, physical activity and diet are also included. This study has the potential to determine the effect of truncal adiposity on plasma lipid measures. While truncal adiposity tends to be associated with several major risk factors, it may be independently associated with plasma lipids and lipoproteins. Knowledge of the strength of association between lipid and lipoprotein concentrations and body fat distribution will contribute to public health efforts to reduce risks of truncal adiposity through efforts to encourage lifestyle changes promoting the loss of adiposity in this region.

Library of Congress Subject Headings

Body composition

Blood lipids

Lipoproteins

Exercise

Diet

Format

application/pdf

Number of Pages

47

Publisher

South Dakota State University

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