Metabolic Response to Food Restriction in Military-Eligible Women with a Gender Comparison
Abstract
The metabolic responses to a complete 74 hour fast (CF) and to a more prolonged 21 day period of hypocaloric intake (HC) were investigated in healthy military-eligible women and comparisons mad with those in healthy military-eligible men. The CF study included a study of leucine flux, glucose production, glycerol and free fatty acid appearance rates. The pattern of change in substrate utilization revealed the expected shift toward oxidation of body fat. The changes were similar in men and women. The RC (30% reduction from a eucaloric level) study also included 24h substrate kinetics, with a 90 min exercise period (55% VO2 max). Again, the kinetic metabolic response was consistent with a sub-optimal energy intake. There were no distinct differences between the metabolic response in woman and men. Tests of physical performance did not reveal differences between genders, Mental performance data are being evaluated. Hence, under highly controlled experimental conditions men and women respond similarly to an acute total fast and to a sub-optimal energy intake.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1999
- Accession Number
- ADA416112
Entities
People
- Vernon R. Young
Organizations
- Massachusetts Institute of Technology