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Improving the precision and accuracy for estimating energy expenditure using the heart rate method

Citation

Green, JA and Frappell, P, Improving the precision and accuracy for estimating energy expenditure using the heart rate method, Physiological and Biochemical Zoology, 80, (5) pp. 551-555. ISSN 1522-2152 (2007) [Refereed Article]

Copyright Statement

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Official URL: http://www.press.uchicago.edu

DOI: doi:10.1086/519961

Abstract

The "heart rate technique" is commonly used to estimate the rate of oxygen consumption (a proxy for energy expenditure) of free-ranging animals. However, a major limitation of this technique is that interindividual variability in the relationship between heart rate (f(H)) and rate of oxygen consumption (Vo2) generates large errors of estimation when the technique is applied to individual free-ranging animals. In this study, we present a new analysis technique that takes advantage of the observation that the f(H) or Vo2 relationships between individuals are frequently parallel and differ only in elevation. This technique offers superior accuracy and precision of Vo2 estimates, reducing the coefficient of variability from 18% to 9% for individual animals in an example application in macaroni penguins. This approach enables application of the heart rate technique to deduce the energetic strategies of individual animals.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Physiology
Research Field:Comparative Physiology
Objective Division:Animal Production and Animal Primary Products
Objective Group:Other Animal Production and Animal Primary Products
Objective Field:Animal Welfare
UTAS Author:Frappell, P (Professor Peter Frappell)
ID Code:68897
Year Published:2007
Web of Science® Times Cited:6
Deposited By:Zoology
Deposited On:2011-03-30
Last Modified:2012-01-12
Downloads:0

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