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

Griffin, Patrick J and Ferguson, Richard A and Gissane, Conor and Bailey, Stephen J and Patterson, Stephen D (2017) Ischemic preconditioning enhances critical power during a 3 minute all-out cycling test. Journal of sports sciences. pp. 1-6. ISSN 1466-447X

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Official URL: http://dx.doi.org/10.1080/02640414.2017.1349923

Abstract

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.

Item Type: Journal Article
Additional Information: ** From PubMed via Jisc Publications Router. The published Version of Record of this article is (c) Informa UK Limited (trading as Taylor & Francis Group) and is available via: http://dx.doi.org/10.1080/02640414.2017.1349923
Uncontrolled Keywords: W Prime, high intensity exercise, near-infrared spectroscopy, occlusion, priming
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
SWORD Depositor: Mr Jisc Router
Depositing User: Mr Jisc Router
Date Deposited: 19 Jul 2017 09:38
Last Modified: 25 Jul 2017 07:59
URI: http://research.stmarys.ac.uk/id/eprint/1643

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