Publication Date

Spring 2017

Advisor(s) - Committee Chair

Jill Maples (Director), Rachel Tinius, and Lee Winchester

Degree Program

School of Kinesiology, Recreation & Sport

Degree Type

Master of Science

Abstract

PURPOSE: Obese women have increased rates of metabolic diseases compared to those of healthy weight status. Additionally, African-American (AA) women have higher rates of metabolic disease compared to Caucasian (CA) women. Metabolic inflexibility is the inability to adjust substrate oxidation in response to dietary intake; potentially leading to weight gain and the development of metabolic disease. Few studies have investigated the impact of weight status and/or ethnicity on the metabolic response of women to a single high fat meal. An acute unfavorable metabolic response may contribute to the higher incidence of metabolic disease among not only obese, but also AA women. Therefore, the purpose of this study was to determine the impact that weight status (lean vs. overweight/obese) and/or ethnicity (CA vs. AA) has on metabolic health in women in response to a single high fat meal. METHODS: CA (n= 15; age=26.27±5.65 yrs; BMI=30.72±11.92kg/m2) and AA (n= 12; age=26.75±6.65yrs; BMI=28.32±6.91kg/m2) women consumed a high fat shake (1062 calories, 56% fat). Blood was drawn and resting energy expenditure (REE) and substrate oxidation (estimated using indirect calorimetry) were assessed at baseline/fasted (T1), 120 minutes post-shake, (T2) 240 minutes post-shake (T3). RESULTS: Lipid and carbohydrate oxidation significantly increased among all women in response to the high fat meal (p

Disciplines

Endocrinology | Kinesiology | Nutrition

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