Page Banner

United States Department of Agriculture

Agricultural Research Service

Research Project: Physical Activity to Fuel Management and Glucose Regulation

Location: Food Components and Health Laboratory

2013 Annual Report


1a.Objectives (from AD-416):
Through a joint USARIEM/MRMC and BHNRC/USDA biomedical research initiative, develop practical biomedical models of human energy metabolism.


1b.Approach (from AD-416):
USDA’s BHNRC will host an applied mathematician supported as a MRMC TATRC-funded IPA from the University of Tennessee. As a visiting scientist at BHNRC/USDA to jointly develop advanced mathematical models to predict the water and metabolic fuel requirements of physically active humans.


3.Progress Report:

This nonfunded project is the same as a subsequently funded project (reimbursable agreement #60-1235-0-0168). Through this collaboration, we are developing advanced mathematical models to predict the water and metabolic fuel requirements of physically active humans. A study was conducted to determine glucose regulation and substrate oxidation patterns in 10 people, aged 65 - 75 who were untrained with a slightly impaired glucose tolerance. Walking after each meal was significantly more effective than 45 min of sustained walking in the morning or afternoon in lowering post-dinner glucose. These data were used to develop mathematical models of substrate oxidation patterns and to investigate the lag time associated with switching from one metabolic fuel to another.


Last Modified: 10/25/2014
Footer Content Back to Top of Page