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Updated: Jul 31, 2026
11:15
Determining the Contribution of the Energy Systems During Exercise
Published on: March 20, 2012
Energy cost calculations for exercise prescription: an update
1Wellness Institute and Research Center, Old Dominion University, Norfolk, Virginia 23529-0196, USA. dswain@odu.edu
Sports Medicine (Auckland, N.Z.)
|July 25, 2000
Summary
New exercise guidelines recommend using oxygen consumption reserve (VO2R) for workload prescription and net VO2 for caloric expenditure. Updated ACSM equations improve accuracy for leg cycle ergometry and bench stepping.
Area of Science:
- Exercise Physiology
- Sports Science
- Biomechanics
Background:
- Current exercise prescription methods may not accurately reflect energy expenditure.
- Previous equations for calculating oxygen cost of exercise have limitations.
Purpose of the Study:
- To outline recent research and recommended changes in exercise prescription and energy cost calculation.
- To introduce updated methods for prescribing exercise intensity and estimating caloric expenditure.
Main Methods:
- Utilizing oxygen consumption reserve (VO2R) as an alternative to percentage of maximal oxygen consumption (VO2max).
- Employing net VO2 instead of gross VO2 for caloric expenditure calculations.
- Modifying the American College of Sports Medicine (ACSM) equation for leg cycle ergometry and bench stepping.
Main Results:
- VO2R provides more accurate target workloads, especially for less fit individuals.
- Using net VO2 prevents overestimation of weight loss.
- New ACSM equations offer improved accuracy for oxygen consumption estimates during leg cycling and bench stepping.
Conclusions:
- Updated methods enhance the precision of exercise intensity prescription and energy expenditure calculations.
- These changes benefit fitness professionals and individuals seeking accurate exercise programming.
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