Tim Nagy. Leader: Tim Nagy, PhD

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  • Professor, Department of Nutrition Sciences





Daniel Smith. Co-Leader: Daniel Smith Jr., PhD

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  • Assistant Professor, Department of Nutrition Sciences







Mickie PowellCo-Leader: Cristy Carter, PhD

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  • Associate Professor, Department of Medicine; Division of Gerontology, Geriatrics, and Palliative Care











Maria Johnson, PhD

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Research Associate, Department of Nutrition Sciences

Center Services


The Comparative Organismal Energetics Core (COEC) provides consultation in methods and study design, training, expertise and state-of-the-art instrumentation to facilitate research on the role of whole animal energetics and metabolism in aging. The COEC provides state-of-the-art instrumentation and analyses for quantifying energy balance and body composition across a variety of animal models. These include measures of energy expenditure, food intake, activity, and core body temperature. Body composition analyses can be performed on living and dead animals. Learn about our full list of services and COEC fees.

Application for Services

If you are interested in our services, please fill out and submit the form below. The information will be sent to the appropriate parties. Alternatively, you can print the form, fill it out, and email it to the contacts listed.


Apply Online for Core Services


Download Application for Core Services