1. Physiological responses to interval endurance exercise at different levels of blood flow restriction
- Author
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Corvino, Rogério B, Rossiter, Harry B, Loch, Thiago, Martins, Jéssica C, and Caputo, Fabrizio
- Subjects
Health Sciences ,Sports Science and Exercise ,Adult ,Coronary Circulation ,Exercise ,Humans ,Male ,Muscle ,Skeletal ,Oxygen Consumption ,Physical Endurance ,Pulmonary Circulation ,Regional Blood Flow ,Cycle ergometry ,Near-infrared spectroscopy ,O-2 uptake ,High-intensity exercise ,Lactate ,Rating of Perceived Exertion ,O2 uptake ,Human Movement and Sports Sciences ,Sport Sciences ,Clinical sciences ,Medical physiology ,Sports science and exercise - Abstract
PurposeWe 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.MethodsTwelve 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 (P peak); I-BFR30, intermittent BFR at 30% P peak; C-BFR30, continuous BFR at 30% P peak; CON30, control exercise without BFR at 30% P peak; I-BFR0, intermittent BFR during unloaded exercise. Cardiopulmonary, gastrocnemius oxygenation (StO2), capillary lactate ([La]), and perceived exertion (RPE) were measured.ResultsV̇O2, ventilation (V̇ E), 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
- Published
- 2017