Accumulated Oxygen Deficit During Exercise to Exhaustion Determined at Different Supramaximal Work Rates

Muniz-Pumares, Daniel and Pedlar, Charles and Godfrey, Richard J. and Glaister, Mark (2016) Accumulated Oxygen Deficit During Exercise to Exhaustion Determined at Different Supramaximal Work Rates. International Journal of Sports Physiology and Performance, 12 (3). pp. 351-356. ISSN 1555-0265

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Official URL: https://doi.org/10.1123/ijspp.2015-0343

Abstract

Purpose: The aim of the study was to determine the effect of supramaximal exercise intensity during constant work-rate cycling to exhaustion on the accumulated oxygen deficit (AOD) and to determine the test–retest reliability of AOD. Methods: Twenty-one trained male cyclists and triathletes (mean ± SD for age and maximal oxygen uptake [V̇O2max] were 41 ± 7 y and 4.53 ± 0.54 L/min, respectively) performed initial tests to determine the linear relationship between V̇O2 and power output, and V̇O2max. In subsequent trials, AOD was determined from exhaustive square-wave cycling trials at 105%, 112.5% (in duplicate), 120%, and 127.5% V̇O2max. Results: Exercise intensity had an effect (P = .011) on the AOD (3.84 ± 1.11, 4.23 ± 0.96, 4.09 ± 0.87, and 3.93 ± 0.89 L at 105%, 112.5%, 120%, and 127.5% V̇O2max, respectively). Specifically, AOD at 112.5% V̇O2max was greater than at 105% V̇O2max (P = .033) and at 127.5% V̇O2max (P = .022), but there were no differences between the AOD at 112.5% and 120% V̇O2max. In 76% of the participants, the maximal AOD occurred at 112.5% or 120% V̇O2max. The reliability statistics of the AOD at 112.5% V̇O2max, determined as intraclass correlation coefficient and coefficient of variation, were .927 and 8.72%, respectively. Conclusions: The AOD, determined from square-wave cycling bouts to exhaustion, peaks at intensities of 112.5–120% V̇O2max. Moreover, the AOD at 112.5% V̇O2max exhibits an 8.72% test–retest reliability.

Item Type: Journal Article
Additional Information: As accepted for publication. The published Version of Record is (c) Human Kinetics and available via: https://doi.org/10.1123/ijspp.2015-0343
Subjects: 500 Natural sciences & mathematics > 571 Physiology & related subjects
700 The arts; fine & decorative arts; recreation > 796 Athletic & outdoor sports & games
School/Department: School of Sport, Health and Applied Science
Depositing User: Kevin Sanders
Date Deposited: 24 Aug 2017 08:55
Last Modified: 29 Aug 2017 13:07
URI: http://research.stmarys.ac.uk/id/eprint/1714

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