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ERIC Number: EJ870252
Record Type: Journal
Publication Date: 2009-Sep
Pages: 8
Abstractor: As Provided
Reference Count: 33
ISSN: ISSN-0270-1367
Within- and Between-Day Repeatability and Variability in Children's Physiological Responses during Submaximal Treadmill Exercise
Amorim, Paulo R. S.; Byrne, Nuala Mary; Hills, Andrew P.
Research Quarterly for Exercise and Sport, v80 n3 p575-582 Sep 2009
The purpose of this study was to verify within- and between-day repeatability and variability in children's oxygen uptake (VO[subscript 2]), gross economy (GE; VO[subscript 2] divided by speed) and heart rate (HR) during treadmill walking based on self-selected speed (SS). Fourteen children (10.1 plus or minus 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[subscript 2], GE, and HR per speed. Repeated measures analysis of variance showed no statistically significant differences in within- or between-day CV for VO[subscript 2], GE, or HR at any speed. Repeatability within- and between-day for VO[subscript 2], GE, and HR for all speeds was verified. These results suggest that submaximal VO[subscript 2] during treadmill walking is stable and reproducible at a range of speeds based on children's SS. (Contains 3 tables and 3 figures.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Australia