| Inaccuracy of the HR reserve vs. V˙O2 reserve relationship during prone arm-paddling exercise in surfboard riders. | |
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MedLine Citation:
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PMID: 21139320 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Previous studies have demonstrated that during lower-body exercise the percentage of heart rate reserve (%HRR) is equivalent to the percentage of the oxygen consumption reserve (%V˙O(2R)) but not to a percentage of the peak oxygen consumption (%V˙O(2peak)). The current study examined these relationships in trained surfboard riders (surfers) during upper-body exercise. Thirteen well-trained competitive surfers performed a stepwise, incremental, prone arm-paddling exercise test to exhaustion. For each subject, data obtained at the end of each stage (i.e., HR and V˙O(2) values) were expressed as a percentage of HRR, V˙O(2peak), and V˙O(2R) respectively and used to determine the individual %HRR-%V˙O(2peak) and %HRR-%V˙O(2R) relationships. Mean slope and intercept were calculated and compared with the line of identity (slope=1, intercept=0). The %HRR versus %V˙O(2R) regression mean slope (0.88±0.06) and intercept (20.82±4.57) were significantly different (p<0.05) from 1 and 0, respectively. Similarly, the regression of %HRR versus %V˙O(2peak) resulted in a line that differed in the slope (p<0.05) but not in the intercept (p=0.94) from the line of identity. Predicted values of %HRR were significantly higher (p<0.05) from indicated values of %V˙O(2R) for all the intensities ranging from 35% to 95% V˙O(2R). Unlike results found for lower-body exercise, a given %HRR during prone upper-body exercise was not equivalent to its corresponding %V˙O(2R). Thus, to ensure more targeted exercise intensity during arm-paddling exercise, individual HR-V˙O(2) equations should be used. |
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Authors:
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Alberto Mendez-Villanueva; Javier Pérez Landaluce; Benjamín Fernández García; Nicolás Terrados; David Bishop |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of physiological anthropology Volume: 29 ISSN: 1880-6805 ISO Abbreviation: J Physiol Anthropol Publication Date: 2010 |
Date Detail:
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Created Date: 2010-12-08 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101269653 Medline TA: J Physiol Anthropol Country: Japan |
Other Details:
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Languages: eng Pagination: 189-95 Citation Subset: IM |
Affiliation:
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Physiology Unit, Sport Science Department, ASPIRE Academy for Sports Excellence, Doha, Qatar. amendezvillanueva@yahoo.com |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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