Significant changes in body composition, body fat distribution, and resting metabolic rate (RMR) occur with aging. Interestingly, studies on human longevity pointed out that long-lived subjects are less prone to the anthropometrics and metabolic derangement normally observed in the elderly. Indeed, the relationship between energy expenditure and longevity has been poorly investigated. Thus, ene...

BACKGROUND Previously reported race and sex differences in energy expenditure (EE) may play a role in body fat gain. OBJECTIVE The purpose of the study was to determine the relations between race, sex, Tanner stage, and EE. DESIGN We conducted a 2-y follow-up study of EE in 114 African American (AA) and white girls and boys aged 12.7 +/- 0.1 y ( +/- SE), who were stratified as obese or lean...

BACKGROUND Resting metabolic rates (RMR) vary across individuals. Understanding the determinants of RMR could provide biological insight into obesity and its metabolic consequences such as type 2 diabetes and cardiovascular diseases. METHODS The present study measured RMR using reference standard indirect calorimetry and evaluated genetic variations from an exome array in a sample of children...

BACKGROUND Knowledge of energy requirements among relatively healthy elderly is limited. OBJECTIVES The objectives of the study were to measure total energy expenditure (TEE)-derived energy requirements in a biracial population of older adults without limitations to daily life and to test these empirical measures against national and international recommendations. DESIGN TEE (measured by th...

The specialty of radiation therapy has increased in complexity over the years, yet as technology improves, the goal of improving outcomes while decreasing toxicity remains critical. Malignant gliomas remain among the most devastating of all malignancies, yet as conventional treatments (surgery, radiation, and chemotherapy) have become optimized overall survival has improved. The underlying mole...

The specialty of radiation therapy has increased in complexity over the years, yet as technology improves, the goal of improving outcomes while decreasing toxicity remains critical. Malignant gliomas remain among the most devastating of all malignancies, yet as conventional treatments (surgery, radiation, and chemotherapy) have become optimized overall survival has improved. The underlying mole...

Mormon crickets, large flightless katydids from western North America, occur in two forms that differ dramatically in population density and daily movement distances. The low-density form is small and cryptic and moves <1 m/d, while the high-density form is large and dark colored and travels up to 1-2 km/d in migratory bands. We determined daytime body temperatures and measured resting metaboli...