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Updated: Apr 25, 2026

Determining the Contribution of the Energy Systems During Exercise
Published on: March 20, 2012
Energy expenditure at work in physical education teachers
François Trudeau1, Louis Laurencelle1, Claude Lajoie1
1Département des sciences de l'activité physique, Université du Québec à Trois-Rivières, Canada.
Abstract:
The objective of this study was to quantify work energy expenditure (EE) in physical education (PE) teachers. Sixty-four (64) physical educators (49 men, 15 women) had their individualized linear function between heart rate (HR) and oxygen consumption measured by laboratory testing. HR was then recorded on 2 different days at work to estimate EE, correlated with a diary of daily tasks. Average absolute EE was low-to-moderate (2.7 ± 1.4 to 4.6 ± 2.5 kcal·min(-1)) and low when expressed in relative values (15.3 ± 6.1% to 24.8 ± 7.6% of VO2max). However, these physical educators often reached very high intensities (from 7.5 ± 7.9% to 23.8 ± 22.3% of work time at 100 bpm and more). PE teaching requires a light-to-moderate EE with more intense periods of physical activity. The variety of tasks performed (office work, supervision and monitoring, mixed participation and active participation) significantly influenced EE.
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