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Effects of priming and pacing strategy on VO2 kinetics and cycling performance
Authors
Stephen J. Bailey
Matthew I. Black
+3 more
Fred J. DiMenna
Andrew M. Jones
A Vanhatalo
Publication date
24 August 2015
Publisher
'Human Kinetics'
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Abstract
Copyright © 2015 Human KineticsThis is the author accepted manuscript. The final version is available from Human Kinetics via the DOI in this record.Purpose: To assess whether combining prior ‘priming’ exercise with an all-out pacing strategy was more effective at improving O2 uptake (VO2) kinetics and cycling performance than either intervention administered independently. Methods: Nine males completed target-work cycling performance trials using a self-paced or all-out pacing strategy with or without prior severe-intensity (70%Δ) priming exercise. Breath-by-breath pulmonary VO2 and cycling power output were measured during all trials. Results: Compared to the self-paced-unprimed control trial (22 ± 5 s), the VO2 mean response time (MRT) was shorter (VO2 kinetics was faster) with all-out pacing (17 ± 4 s) and priming (17 ± 3 s), with the lowest VO2 MRT observed when all-out pacing and priming were combined (15 ± 4 s) (P0.05). Conclusions: These findings suggest that combining an all-out start with severe-intensity priming exercise additively improves the VO2 MRT, but not total O2 consumption and cycling performance since these were improved by a similar magnitude in both primed trials relative to the self-paced-unprimed control condition. Therefore, these results support the use of priming exercise as a pre-competition intervention to improve oxidative metabolism and performance during short-duration high-intensity cycling exercise, independent of the pacing strategy adopted
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Last time updated on 03/08/2016