Gender differences in the effects of methylphenidate on energy intake in young
adults: a preliminary study.
Author(s): Goldfield GS, Lorello C, Cameron J, Chaput JP.
Affiliation(s): Children's Hospital of Eastern Ontario Research Institute, Ottawa, ON K1H 8L1,
Canada. ggoldfield@cheo.on.ca
Publication date & source: 2011, Appl Physiol Nutr Metab. , 36(6):1009-13
The present study examined gender differences in response to methylphenidate
(MPH) on energy intake and macronutrient preference. Twelve adults (6 men, 6
women) were given placebo or short-acting MPH (0.5 mg/kg) in a randomized, double
blind, placebo-controlled crossover fashion. One hour after drug administration,
appetite sensations and the relative reinforcing value of energy-dense snack food
were measured, followed immediately by energy intake and macronutrient preference
during a buffet lunch. Relative to placebo, men exhibited a significantly greater
reduction in energy intake, fat intake, and carbohydrate intake after MPH
administration compared with women. Future research is needed to verify these
initial findings.
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