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<strong>Thursday</strong>, May 30, 2013<br />

S268 Vol. 45 No. 5 Supplement<br />

D-21 Free Communication/Poster - Assessment of<br />

Physical Activity and Energy Expenditure<br />

May 30, 2013, 1:00 PM - 6:00 PM<br />

Room: Hall C<br />

1409 Board #1 May 30, 2:00 PM - 3:30 PM<br />

Estimating Food Energy requirements and average daily<br />

Metabolic rate For The us Population: 2005-2006<br />

Edward Archer, Greg A. Hand, FACSM, James R. Hebert, Erica<br />

Lau, Xuewen Wang, Robin Shook, Raja Fayad, Steven N. Blair,<br />

FACSM. Univeristy of South Carolina, Columbia, SC.<br />

(No relationships reported)<br />

PurPOsE:To estimate population-level food energy requirements (FER), total daily<br />

energy expenditure (TDEE), and average daily metabolic rate (ADMR) in a nationally<br />

representative sample of US adults.<br />

METhOds:FER, TDEE, and ADMR were estimated via a factorial equation in<br />

a nationally representative, cross-sectional, stratified sample of 2597 adults, aged<br />

20 to 74 years (US National Health and Nutrition Examination Survey; NHANES<br />

2005-2006). TDEE was calculated using estimated resting energy expenditure (REE),<br />

ADMR, and thermic effect of food (TEF). REE was derived from validated equations<br />

using demographic (i.e., age and sex) and anthropometric (i.e., height and weight) data.<br />

ADMR was calculated from objectively measured PA via accelerometry-based activity<br />

monitors and self-reported sleep duration. TEF was assigned a value of 7.5% of TDEE<br />

based on previous calorimetric research.<br />

rEsuLTs:The 2005-2006 estimated FER for the US population were 2940 kcal/day<br />

for men and 2275 kcal/day for women. FER ranged from 3230 kcal/day in obese (i.e.,<br />

BMI ≥30kg/m2) men to 2026 kcal/day in normal weight (BMI < 25kg/m2) women.<br />

There were significant inverse relationships between ADMR and obesity and age. For<br />

men and women, the ADMR values were 1.53 and 1.52, respectively. Obese men and<br />

women had lower ADMR values than normal weight (p

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