Validity of heart rate as a measure of mean daily energy expenditure

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Bibliographic Details
Title translated into German:Bedeutung der Herzfrequenz als Mass des durchschnittlichen taeglichen Energieverbrauchs
Author:Washburn, Richard A.; Montoye, Henry J.
Editor:Dotson, Charles O.; Humphrey, James H.
Published in:Exercise physiology : current selected research. Vol. 2
Published:New York (N.Y.): AMS Press (Verlag), 1986, S. 161-172, Lit.
Format: Publications (Database SPOLIT)
Publication Type: Compilation article
Media type: Print resource
Language:English
ISBN:0404628028
Keywords:
Online Access:
Identification number:PU198702027992
Source:BISp

Abstract

Twenty male subjects, mean age 32.3 +/- 12.9 yr, participated in this study to assess the validity of heart rate (HR)/ oxygen uptake (V02) calibration methods for the estimation of energy expenditure during daily activities. Individual subject calibrations were developed from HR and V02 measured during sitting and standing rest and during four progressive bouts of both arm and leg exercise. Each subject participated in a field trial in which HR was monitored during one day of normal activities. Subjects maintained a detailed activity diary from which the average energy expenditure in METs over the trial period was estimated. This served as the criterion measure for comparison of estimates from four calibration methods: Method I: HR/V02 at rest and during leg exercise; method II: HR/log V02 at rest and during leg exercise; Method III: HR diary methods used mean HR during arm or leg activity with calibration specific to that activity and lab V02 values for sitting and standing rest; method IV: The difference between the resting and mean field trial HR converted to METs by HR/MET regression calculated using date for all subjects during leg exercise. Results show poor estimation of mean MET level with large standard errors (SE). Methods I-III underestimate the mean MET level by 0.37 +/- 0.76, 0.42 +/- 0.47, and 0.42 +/- 0.43 respectively, while method IV overestimates by 0.22 +/- 0.45. These results suggest that estimates of mean daily energy expenditure using HR/V02 calibrations from resting and dynamic exercise data are subject to large individual errors. Verf.-Referat