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

作者：Muniz Pumares Daniel; Pedlar Charles; Godfrey Richard J; Glaister Mark

来源：International Journal of Sports Physiology and Performance, 2017, 12(3): 351-356.

DOI：10.1123/ijspp.2015-0343

• anaerobic capacity
• reliability
• MAOD
• cycle ergometry

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 [VO(2)max] were 41 +/- 7 y and 4.53 +/- 0.54 L/min, respectively) performed initial tests to determine the linear relationship between VO2 and power output, and VO(2)max. In subsequent trials, AOD was determined from exhaustive square-wave cycling trials at 105%, 112.5% (in duplicate), 120%, and 127.5% VO(2)max. 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% VO(2)max, respectively). Specifically, AOD at 112.5% VO(2)max was greater than at 105% VO(2)max (P = .033) and at 127.5% VO(2)max (P = .022), but there were no differences between the AOD at 112.5% and 120% VO(2)max. In 76% of the participants, the maximal AOD occurred at 112.5% or 120% VO(2)max. The reliability statistics of the AOD at 112.5% VO(2)max, 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% VO(2)max. Moreover, the AOD at 112.5% VO(2)max exhibits an 8.72% test-retest reliability.

• 出版日期2017-3