2016
DOI: 10.1055/s-0042-110655
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Estimating Energy Expenditure using Individualized, Power-Specific Gross Efficiencies

Abstract: Our purpose was to determine if using an individual's power-specific gross efficiency improves the accuracy of estimating energy expenditure from cycling power. 30 subjects performed a graded cycling test to develop 4 gross efficiencies: individual power-specific gross efficiencies, a group mean power-specific gross efficiency, individual fixed gross efficiencies, and a group mean fixed gross efficiency. Energy expenditure was estimated from power using these different gross efficiencies and compared to measur… Show more

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“…Importantly, the developed equation can be used with a measured BMR and measured power output-EE relation to enhance the accuracy, but can also be used with an estimated BMR based on the proposed prediction equation (Equation 1 or 2), and using an estimated EE based on the average relation between power and EE (Equation 4). However, such a generic approach will reduce the accuracy (see e.g., 41 ). Indeed, while EE E was underestimated by only 3% at the group level when we assumed a gross efficiency of 20% to convert power output into EE (which is approximately similar to using our Equation 4), this error ranged from 17% underestimation to 8% overestimation at an individual level, thus highlighting the need for an individualized approach.…”
Section: Perspectivementioning
confidence: 99%
“…Importantly, the developed equation can be used with a measured BMR and measured power output-EE relation to enhance the accuracy, but can also be used with an estimated BMR based on the proposed prediction equation (Equation 1 or 2), and using an estimated EE based on the average relation between power and EE (Equation 4). However, such a generic approach will reduce the accuracy (see e.g., 41 ). Indeed, while EE E was underestimated by only 3% at the group level when we assumed a gross efficiency of 20% to convert power output into EE (which is approximately similar to using our Equation 4), this error ranged from 17% underestimation to 8% overestimation at an individual level, thus highlighting the need for an individualized approach.…”
Section: Perspectivementioning
confidence: 99%