Corvino, RB, Rossiter, HB orcid.org/0000-0002-7884-0726, Loch, T et al. (2 more authors) (2017) Physiological responses to interval endurance exercise at different levels of blood flow restriction. European Journal of Applied Physiology, 117 (1). pp. 39-52. ISSN 1439-6319
Abstract
Purpose: We aimed to identify a blood flow restriction (BFR) endurance exercise protocol that would both maximize cardiopulmonary and metabolic strain, and minimize the perception of effort. Methods: Twelve healthy males (23 ± 2 years, 75 ± 7 kg) performed five different exercise protocols in randomized order: HI, high-intensity exercise starting at 105% of the incremental peak power (Ppeak); I-BFR₃₀, intermittent BFR at 30% Ppeak; C-BFR₃₀, continuous BFR at 30% Ppeak; CON₃₀, control exercise without BFR at 30% Ppeak; I-BFR₀, intermittent BFR during unloaded exercise. Cardiopulmonary, gastrocnemius oxygenation (StO₂), capillary lactate ([La]), and perceived exertion (RPE) were measured. Results: V̇O₂, ventilation (V̇E), heart rate (HR), [La] and RPE were greater in HI than all other protocols. However, muscle StO2 was not different between HI (set1—57.8 ± 5.8; set2—58.1 ± 7.2%) and I-BRF₃₀ (set1—59.4 ± 4.1; set2—60.5 ± 6.6%, p < 0.05). While physiologic responses were mostly similar between I-BFR₃₀ and C-BFR₃₀, [La] was greater in I-BFR₃₀ (4.2 ± 1.1 vs. 2.6 ± 1.1 mmol L¯¹, p = 0.014) and RPE was less (5.6 ± 2.1 and 7.4 ± 2.6; p = 0.014). I-BFR₃₀ showed similar reduced muscle StO₂ compared with HI, and increased blood lactate compared to C-BFR₃₀ exercise. Conclusion: Therefore, this study demonstrate that endurance cycling with intermittent BFR promotes muscle deoxygenation and metabolic strain, which may translate into increased endurance training adaptations while minimizing power output and RPE.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2016, Springer-Verlag Berlin Heidelberg. This is an author produced version of a paper published in the European Journal of Applied Physiology. Uploaded in accordance with the publisher's self-archiving policy. The final publication is available at Springer via https://doi.org/10.1007/s00421-016-3497-5 |
Keywords: | Cycle ergometry; Near-infrared spectroscopy; O2 uptake; High-intensity exercise; Lactate; Rating of Perceived Exertion |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Biological Sciences (Leeds) > School of Biomedical Sciences (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 04 Nov 2016 14:14 |
Last Modified: | 08 Nov 2017 01:38 |
Published Version: | https://doi.org/10.1007/s00421-016-3497-5 |
Status: | Published |
Publisher: | Springer Verlag |
Identification Number: | 10.1007/s00421-016-3497-5 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:106943 |