Effects Of Caffeine On Neuromuscular Fatigue And Performance During High-intensity Cycling Exercise In Moderate Hypoxia

dc.creatorSmirmaul
dc.creatorBruno P. C.; de Moraes
dc.creatorAntonio Carlos; Angius
dc.creatorLuca; Marcora
dc.creatorSamuele M.
dc.date2017
dc.datejan
dc.date2017-11-13T13:20:26Z
dc.date2017-11-13T13:20:26Z
dc.date.accessioned2018-03-29T05:54:05Z
dc.date.available2018-03-29T05:54:05Z
dc.identifierEuropean Journal Of Applied Physiology. Springer, v. 117, p. 27 - 38, 2017.
dc.identifier1439-6319
dc.identifier1439-6327
dc.identifierWOS:000394313300004
dc.identifier10.1007/s00421-016-3496-6
dc.identifierhttps://link-springer-com.ez88.periodicos.capes.gov.br/article/10.1007%2Fs00421-016-3496-6
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/327630
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1364655
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionTo investigate the effects of caffeine on performance, neuromuscular fatigue and perception of effort during high-intensity cycling exercise in moderate hypoxia. Seven adult male participants firstly underwent an incremental exercise test on a cycle ergometer in conditions of acute normobaric hypoxia (fraction inspired oxygen = 0.15) to establish peak power output (PPO). In the following two visits, they performed a time to exhaustion test (78 +/- 3% PPO) in the same hypoxic conditions after caffeine ingestion (4 mg kg(-1)) and one after placebo ingestion in a double-blind, randomized, counterbalanced cross-over design. Caffeine significantly improved time to exhaustion by 12%. A significant decrease in subjective fatigue was found after caffeine consumption. Perception of effort and surface electromyographic signal amplitude of the vastus lateralis were lower and heart rate was higher in the caffeine condition when compared to placebo. However, caffeine did not reduce the peripheral and central fatigue induced by high-intensity cycling exercise in moderate hypoxia. The caffeine-induced improvement in time to exhaustion during high-intensity cycling exercise in moderate hypoxia seems to be mediated by a reduction in perception of effort, which occurs despite no reduction in neuromuscular fatigue.
dc.description117
dc.description1
dc.description27
dc.description38
dc.descriptionCNPQ (Conselho Nacional de Desenvolvimento Cientifico) [131724/2011-8]
dc.descriptionSantander International Mobility Grant-PRPG UNICAMP
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageEnglish
dc.publisherSpringer
dc.publisherNew York
dc.relationEuropean Journal of Applied Physiology
dc.rightsfechado
dc.sourceWOS
dc.subjectAltitude
dc.subjectPerception Of Effort
dc.subjectCentral Fatigue
dc.subjectPeripheral Fatigue
dc.subjectExercise Performance
dc.titleEffects Of Caffeine On Neuromuscular Fatigue And Performance During High-intensity Cycling Exercise In Moderate Hypoxia
dc.typeArtículos de revistas


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