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Capers wins first place post-doctoral award at 2015 Annual Public Health Research And Practice Day

April 14, 2015

Patrice L. Capers, PhD, MSCR, a MERIT post-doctoral scholar with the Nutrition Obesity Research Center (NORC) and Office of Energetics, won first place in the Post-Doctoral category at UAB School of Public Health’s 2015 Annual Public Health Research And Practice Day—which “gives visibility to on-going and planned research activities ranging from completed research that has been presented at meetings to early stage concepts of research projects”—for the abstract titled “A Systematic Review and Meta-analysis of Randomized Controlled Trials of the Impact of Sleep Duration on Adiposity and Components of Energy Balance.”

Since recent epidemiological and ecological trends in humans indicate a possible causal relationship between sleep duration and energy balance, Dr. Capers and colleagues conducted a systematic literature review and meta-analysis using six databases. They sought reports of randomized controlled trials where sleep duration was manipulated and measured outcomes were related to body composition or components of energy balance.

The researchers found 18 unique studies: eight studies on body weight; four studies on food intake; four studies on total energy expenditure; three on respiratory quotient; and four studies on leptin and/or ghrelin. The available experimental literature suggests that sleep restriction increases food intake and total energy expenditure with equivocal effects on weight. However, current experimental studies do not provide a strong basis to support or refute a causal relationship between sleep duration and weight change in humans. They concluded that future controlled trials examining the impact of increased sleep on body weight/energy balance factors are warranted.

Co-investigators in the study are Aaron Davis Fobian, PhD, assistant professor in the Department of Psychiatry; Kathryn A. Kaiser, PhD, instructor in the Office of Energetics; Rohit Borah, a MPH student  and research analyst in the Office of Energetics and NORC; and David B. Allison, PhD, distinguished professor and director of the NORC and Office of Energetics.