Defense Date

2012

Document Type

Thesis

Degree Name

Master of Science

Department

Health and Movement Sciences

First Advisor

R. Lee Franco

Abstract

Sympathetic overactivity (SO) is associated with obesity and cardiovascular disease (CVD) mortality. Black adolescents have an increased risk of obesity and CVD later in life, particularly females. PURPOSE: To evaluate differences in SO between black (BOA) and white obese female adolescents (WOA). METHODS: Sixty-one BOA (n=49, 13.7±1.6 yrs, 38.1±6.1 kg/m2) and WOA (n=12, 13.3±2.2 yrs, 34.3±4.9 kg/m2) completed a maximal graded treadmill test after which an exercise recovery index (ERI; heart rate/VO2 plateau) was calculated. RESULTS: The ERI was significantly greater in BOA compared to WOA (29.8 ± 6.4 vs. 24.1 ± 3.1, P = 0.004). Multiple linear regression modeling revealed a significant independent association between ERI and VO2FFM (r = -0.310, P = 0.027) and %FAT (r = 0.326, P = 0.020) in BOA only. CONCLUSIONS: These results suggest that BOA females have greater SO than WOA females.

Rights

© The Author

Is Part Of

VCU University Archives

Is Part Of

VCU Theses and Dissertations

Date of Submission

May 2012

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