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Ischemic preconditioning enhances critical power during a 3 minute all-out cycling test

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posted on 20.07.2017, 12:41 by Patrick J. Griffin, Richard Ferguson, Conor Gissane, Stephen Bailey, Stephen D. Patterson
This study tested the hypothesis that ischemic preconditioning (IPC) would increase critical power (CP) during a 3 minute all-out cycling test. Twelve males completed two 3 minute all-out cycling tests, in a crossover design, separated by 7 days. These tests were preceded by IPC (4 x 5 minute intervals at 220 mmHg bilateral leg occlusion) or SHAM treatment (4 x 5 minute intervals at 20 mmHg bilateral leg occlusion). CP was calculated as the mean power output during the final 30 s of the 3 minute test with W′ taken as the total work done above CP. Muscle oxygenation was measured throughout the exercise period. There was a 15.3 ± 0.3% decrease in muscle oxygenation (TSI; [Tissue saturation index]) during the IPC stimulus, relative to SHAM. CP was significantly increased (241 ± 65 W vs. 234 ± 67 W), whereas W′ (18.4 ± 3.8 vs 17.9 ± 3.7 kJ) and total work done (TWD) were not different (61.1 ± 12.7 vs 60.8 ± 12.7 kJ), between the IPC and SHAM trials. IPC enhanced CP during a 3 minute all-out cycling test without impacting W′ or TWD. The improved CP after IPC might contribute towards the effect of IPC on endurance performance.

History

School

  • Sport, Exercise and Health Sciences

Published in

Jorunal of Sport Sciences

Citation

GRIFFIN, P.J. ... et al, 2018. Ischemic preconditioning enhances critical power during a 3 minute all-out cycling test. Journal of Sport Sciences, 36(9), pp.1038-1043.

Publisher

© Taylor and Francis

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

22/06/2017

Publication date

2018

Notes

This is an Accepted Manuscript of an article published by Taylor & Francis in Journal of Sport Sciences on 7 July 2017, available online: http://www.tandfonline.com/10.1080/02640414.2017.1349923.

ISSN

0264-0414

eISSN

1466-447X

Language

en

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