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Within- and between-day repeatability and variability in children's physiological responses during submaximal treadmill exercise

Amorim, Paulo R., Byrne, Nuala M., & Hills, Andrew P. (2009) Within- and between-day repeatability and variability in children's physiological responses during submaximal treadmill exercise. Research Quarterly for Exercise and Sport, 80(3), pp. 575-582.

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    Abstract

    The purpose of this study was to verify within- and between-day repeatability and variability in children's oxygen uptake (VO^sub 2^), gross economy (GE; VO^sub 2^ divided by speed) and heart rate (HR) during treadmill walking based on self-selected speed (SS). Fourteen children (10.1 ± 1.4 years) undertook three testing sessions over 2 days in which four walking speeds, including SS were tested. Within- and between-day repeatability were assessed using the Bland and Altman method, and coefficients of variability (CV) were determined for each child across exercise bouts and averaged to obtain a mean group CV value for VO^sub 2^, GE, and HR per speed. Repeated measures analysis of variance showed no statistically significant differences in within- or between-day CV for VO^sub 2^, GE, or HR at any speed. Repeatability within- and between-day for VO^sub 2^, GE, and HR for all speeds was verified. These results suggest that submaximal VO^sub 2^ during treadmill walking is stable and reproducible at a range of speeds based on children's SS.

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    1 citations in Web of Science®

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    ID Code: 29726
    Item Type: Journal Article
    Additional URLs:
    Keywords: Oxygen Uptake, Reliability, Self-Selected Speed, Walking
    ISSN: 0270-1367
    Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > MEDICAL BIOCHEMISTRY AND METABOLOMICS (110100) > Metabolic Medicine (110107)
    Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > HUMAN MOVEMENT AND SPORTS SCIENCE (110600) > Exercise Physiology (110602)
    Divisions: Current > QUT Faculties and Divisions > Faculty of Health
    Current > Institutes > Institute of Health and Biomedical Innovation
    Current > Schools > School of Exercise & Nutrition Sciences
    Copyright Owner: Copyright 2009 the American Alliance for Health, Physical Education, Recreation and Dance
    Deposited On: 20 Jan 2010 16:14
    Last Modified: 01 Mar 2012 00:03

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