2134/25837
Patrick J. Griffin
Patrick J.
Griffin
Richard Ferguson
Richard
Ferguson
Conor Gissane
Conor
Gissane
Stephen Bailey
Stephen
Bailey
Stephen D. Patterson
Stephen D.
Patterson
Ischemic preconditioning enhances critical power during a 3 minute all-out cycling test
Loughborough University
2017
W Prime
High intensity exercise
Near-infrared spectroscopy
Priming
Occlusion
Medical and Health Sciences not elsewhere classified
2017-07-20 12:41:05
Journal contribution
https://repository.lboro.ac.uk/articles/journal_contribution/Ischemic_preconditioning_enhances_critical_power_during_a_3_minute_all-out_cycling_test/9628502
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.