Photobiomodulation 30 min or 6 h Prior to Cycling Does Not Alter Resting Blood Flow Velocity, Exercise-Induced Physiological Responses or Time to Exhaustion in Healthy Men

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Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Federal de Pernambuco (UFPE)-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.creatorDutra, Yago Medeiros [UNESP]-
Autor(es): dc.creatorClaus, Gabriel Machado [UNESP]-
Autor(es): dc.creatorMalta, Elvis de Souza [UNESP]-
Autor(es): dc.creatorSeda, Daniela Moraes de Franco [UNESP]-
Autor(es): dc.creatorZago, Anderson Saranz [UNESP]-
Autor(es): dc.creatorCampos, Eduardo Zapaterra-
Autor(es): dc.creatorFerraresi, Cleber-
Autor(es): dc.creatorZagatto, Alessandro Moura [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:45:24Z-
Data de disponibilização: dc.date.available2022-02-22T00:45:24Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-01-14-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3389/fphys.2020.607302-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/205823-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/205823-
Descrição: dc.descriptionPurpose: The aim of the current study was to investigate the effects of photobiomodulation therapy (PBMT) applied 30 min or 6 h prior to cycling on blood flow velocity and plasma nitrite concentrations at rest, time to exhaustion, cardiorespiratory responses, blood acid-base balance, and K+ and lactate concentrations during exercise. Methods: In a randomized, crossover design, 13 healthy untrained men randomly completed four cycling bouts until exhaustion at the severe-intensity domain (i.e., above respiratory compensation point). Thirty minutes or 6 h prior to the cycling trials, participants were treated with PBMT on the quadriceps, hamstrings, and gastrocnemius muscles of both limbs using a multi-diode array (11 cm × 30 cm with 264 diodes) at doses of 152 J or a sham irradiation (with device turned off, placebo). Blood samples were collected before and 30 min or 6 h after treatments to measure plasmatic nitrite concentrations. Doppler ultrasound exams of the femoral artery were also performed at the same time points. Cardiorespiratory responses, blood acid-base balance, and K+ and lactate concentrations were monitored during exercise sessions. Results: PBMT did not improve the time to exhaustion (p = 0.30). At rest, no differences were found in the peak systolic velocity (p = 0.97) or pulsatility index (p = 0.83) in the femoral artery, and in plasma nitrite concentrations (p = 0.47). During exercise, there were no differences for any cardiorespiratory response monitored (heart rate, p = 0.15; oxygen uptake, p = 0.15; pulmonary ventilation, p = 0.67; carbon dioxide output, p = 0.93; and respiratory exchange ratio, p = 0.32), any blood acid-base balance indicator (pH, p = 0.74; base excess, p = 0.33; bicarbonate concentration, p = 0.54), or K+ (p = 0.22) and lactate (p = 0.55) concentrations. Conclusions: PBMT at 152 J applied 30 min or 6 h before cycling at severe-intensity did not alter resting plasma nitrite and blood flow velocity in the femoral artery, exercise-induced physiological responses, or time to exhaustion in healthy untrained men.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionPost-Graduate Program in Movement Sciences Laboratory of Physiology and Sport Performance (LAFIDE) Department of Physical Education School of Sciences São Paulo State University – UNESP-
Descrição: dc.descriptionPost-Graduate Program in Movement Sciences Department of Physical Education School of Sciences São Paulo State University – UNESP-
Descrição: dc.descriptionDepartment of Physical Education Federal University of Pernambuco-
Descrição: dc.descriptionPhysical Therapy Department Federal University of Sao Carlos (UFSCar)-
Descrição: dc.descriptionPost-Graduate Program in Movement Sciences Laboratory of Physiology and Sport Performance (LAFIDE) Department of Physical Education School of Sciences São Paulo State University – UNESP-
Descrição: dc.descriptionPost-Graduate Program in Movement Sciences Department of Physical Education School of Sciences São Paulo State University – UNESP-
Descrição: dc.descriptionCAPES: 001-
Descrição: dc.descriptionFAPESP: 2017/11255-0-
Descrição: dc.descriptionFAPESP: 2017/14187-6-
Descrição: dc.descriptionFAPESP: 2017/21724-8-
Idioma: dc.languageen-
Relação: dc.relationFrontiers in Physiology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectcardiorespiratory fitness-
Palavras-chave: dc.subjectergogenic effects-
Palavras-chave: dc.subjectexercise tests-
Palavras-chave: dc.subjectlow-level laser therapy-
Palavras-chave: dc.subjectregional blood flow-
Título: dc.titlePhotobiomodulation 30 min or 6 h Prior to Cycling Does Not Alter Resting Blood Flow Velocity, Exercise-Induced Physiological Responses or Time to Exhaustion in Healthy Men-
Tipo de arquivo: dc.typelivro digital-
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