title: Postabsorptive and postprandial energy expenditure and substrate oxidation do not change during the menstrual cycle in young women.
abstract: There is little information on the effects of the menstrual cycle on the thermic effect of feeding (TEF) and postprandial substrate oxidation. To address these issues, a dose-response study was conducted in eight young women to whom test meals containing 0, 1046, 2092 and 4148 kJ were administered on nonconsecutive days, once each during the follicular phase and once during the luteal phase of the menstrual cycle. Postprandial energy expenditure was measured until it returned to base line (test duration for the 0 kJ meal was matched to duration of 4184 kJ meal). There was no significant difference between menstrual cycle phases in the duration of the thermogenic response to any size meal. TEF, calculated by four different methods, did not differ between follicular and luteal phases, and a comparable dose-response was observed in both phases. Similarly, there was no effect of menstrual cycle phase on postabsorptive or postprandial protein, fat, or carbohydrate oxidation. In conclusion, postabsorptive and postprandial energy expenditure and substrate oxidations did not differ in young women during the follicular and luteal phases of the menstrual cycle.
authors.affiliation: The Jean Mayer U.S. Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, Boston, MA 02111, USA.
authors.forename: K J
authors.initials: KJ
authors.lastname: Melanson
authors.forename: E
authors.initials: E
authors.lastname: Saltzman
authors.forename: R
authors.initials: R
authors.lastname: Russell
authors.forename: S B
authors.initials: SB
authors.lastname: Roberts
mesh_terms: D000328:Adult; D000375:Aging / Q000502:physiology; D001823:Body Composition / Q000502:physiology; D001833:Body Temperature Regulation / Q000502:physiology; D004040:Dietary Carbohydrates / Q000378:metabolism*; D004041:Dietary Fats / Q000378:metabolism*; D004044:Dietary Proteins / Q000378:metabolism*; D002149:Energy Intake / Q000502:physiology; D004734:Energy Metabolism / Q000502:physiology*; D005260:Female; D006801:Humans; D008597:Menstrual Cycle / Q000502:physiology*; D010084:Oxidation-Reduction; D019518:Postprandial Period / Q000502:physiology*; D013997:Time Factors
chemical_list: D004040:Dietary Carbohydrates; D004041:Dietary Fats; D004044:Dietary Proteins