| Effects of Pacing Strategy on Work Done above Critical Power during High-Intensity Exercise. | |
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MedLine Citation:
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PMID: 23377832 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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PURPOSE: We investigated the influence of pacing strategy on the work completed above critical power (CP) prior to exhaustion (W>CP) and the peak V˙o2 attained during high-intensity cycling. METHODS: Following determination of V˙o2max from a ramp incremental cycling test (INC) and estimation of the parameters of the power-duration relationship for high-intensity exercise (i.e., CP and W´) from a 3-min all-out cycling test (AOT), eight male subjects completed a cycle test to exhaustion at a severe-intensity constant-work-rate estimated to result in exhaustion in 3 min (CWR) and a self-paced 3-min cycling time trial (SPT). RESULTS: V˙o2max determined from INC was 4.24 ± 0.69 L·min and CP and W' estimated from AOT were 260 ± 60 W and 16.5 ± 4.0 kJ, respectively. W>CP during SPT was not significantly different from W>CP during CWR (15.3 ± 5.6 and 16.6 ± 7.4 kJ, respectively) and these values were also similar to W>CP during INC (16.4 ± 4.0 kJ) and W' estimated from AOT. The peak V˙o2 during SPT was not significantly different from peak V˙o2 during CWR (4.20 ± 0.77 and 4.14 ± 0.75 L·min, respectively) and these values were similar to the V˙o2max determined from INC and the peak V˙o2 during AOT (4.10 ± 0.79 L·min). CONCLUSIONS: Exhaustion during high-intensity exercise coincides with achievement of the same peak V˙o2 (V˙o2max) and completion of the same W>CP, irrespective of the work rate forcing function (INC or CWR) or pacing strategy (enforced-pace or self-paced). These findings indicate that exhaustion during high-intensity exercise is based on highly predictable physiological processes which are unaffected when pacing strategy is self-selected. |
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Authors:
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Weerapong Chidnok; Fred J Dimenna; Stephen J Bailey; Daryl P Wilkerson; Anni Vanhatalo; Andrew M Jones |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2013-1-30 |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: - ISSN: 1530-0315 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 2013 Jan |
Date Detail:
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Created Date: 2013-2-4 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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1 Sport and Health Sciences, College of Life and Environmental Sciences, St. Luke's Campus, University of Exeter, Heavitree Road, Exeter, Devon, England, UNITED KINGDOM; 2 Human Performance Laboratory, Health Studies, Physical Education and Human Performance Sciences, Adelphi University, Garden City, New York, UNITED STATES; and 3 Teachers College, Department of Biobehavioral Sciences, Columbia University, New York, New York, UNITED STATES. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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