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Title: Combined prior exercise and fast-start improves VO2 kinetics and cycling performance
Authors: Brock, Kirsty
Antonellis, Prokopios
Black, Matt I.
DiMenna, Fred J.
Vanhatalo, Anni
Jones, Andrew M.
Bailey, Stephen J.
Keywords: Pulmonary VO2
Warm-up exercise
Fast/all-out start
Near-infrared spectroscopy
Exercise performance
Issue Date: 2017
Publisher: © Human Kinetics
Citation: BROCK, K. ...et al., 2017. Combined prior exercise and fast-start improves VO2 kinetics and cycling performance. International Journal of Sports Physiology and Performance, In Press.
Abstract: Purpose: To investigate whether oxygen uptake ( O2) kinetics and simulated 4-km cycling performance are synergistically improved by prior ‘priming’ exercise and an all-out starting strategy. Methods: Nine males completed four target work trials (114 ± 17 kJ) to assess O2 kinetics and cycling performance in a repeated-measures, cross-over experimental design. Trials were initiated with either a 12-s all-out start or a self-selected start and preceded by prior severe-intensity (70%Δ) priming exercise or no priming exercise. Results: The O2 MRT was lower (indicative of faster O2 kinetics) in the all-out primed condition (20 ± 6 s) compared to the all-out unprimed (23 ± 6 s), self-paced-unprimed (42 ± 13 s) and self-paced-primed (42 ± 11 s) trials (P<0.05), with the O2 MRT also lower in the all-out unprimed compared to self-paced-unprimed and self-paced-primed trials (P<0.05). Trial completion time was shorter (performance was enhanced) in the all-out primed trial (402 ± 14 s) compared to the all-out unprimed (408 ± 14 s), self-paced-unprimed (411 ± 16 s) and self-paced-primed (411 ± 19 s) trials (P<0.05) with no differences between the latter three trials. Conclusions: The findings from this study suggest that combining severe-intensity priming exercise with a short-duration all-out starting strategy can expedite the adjustment of O2 and lower completion time during a cycling performance trial to a greater extent than either intervention administered independently. These results might have implications for optimising performance in short-duration high-intensity competitive events such as a 4-km cycling time trial.
Description: Accepted author manuscript version reprinted, by permission, from International Journal of Sports Physiology and Performance, 2017, https://doi.org/10.1123/ijspp.2016-0557. © Human Kinetics, Inc.
Version: Accepted for publication
DOI: 10.1123/ijspp.2016-0557
URI: https://dspace.lboro.ac.uk/2134/25839
Publisher Link: https://doi.org/10.1123/ijspp.2016-0557
ISSN: 1555-0273
Appears in Collections:Published Articles (Sport, Exercise and Health Sciences)

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