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Is heart rate variability a feasible method to determine anaerobic threshold in progressive resistance exercise in coronary artery disease?
Sperling, Milena P R; Simões, Rodrigo P; Caruso, Flávia C R; Mendes, Renata G; Arena, Ross; Borghi-Silva, Audrey.
Afiliação
  • Sperling MP; Interunidades Bioengenharia (EESC/FMRP/IQSC), Universidade de São Paulo (USP), São Carlos, SP, Brazil.
  • Simões RP; Laboratório de Fisioterapia Cardiopulmonar, Departamento de Fisioterapia, Universidade Federal de São Carlos (UFSCar), São Carlos, SP, Brazil.
  • Caruso FC; Laboratório de Fisioterapia Cardiopulmonar, Departamento de Fisioterapia, Universidade Federal de São Carlos (UFSCar), São Carlos, SP, Brazil.
  • Mendes RG; Laboratório de Fisioterapia Cardiopulmonar, Departamento de Fisioterapia, Universidade Federal de São Carlos (UFSCar), São Carlos, SP, Brazil.
  • Arena R; Laboratório de Fisioterapia Cardiopulmonar, Departamento de Fisioterapia, Universidade Federal de São Carlos (UFSCar), São Carlos, SP, Brazil.
  • Borghi-Silva A; Integrative Physiology Laboratory, Department of Physical Therapy, College of Applied Health Sciences, University of Illinois at Chicago (UIC), Chicago, USA.
Braz J Phys Ther ; 20(4): 289-97, 2016.
Article em En | MEDLINE | ID: mdl-27556384
BACKGROUND: Recent studies have shown that the magnitude of the metabolic and autonomic responses during progressive resistance exercise (PRE) is associated with the determination of the anaerobic threshold (AT). AT is an important parameter to determine intensity in dynamic exercise. OBJECTIVES: To investigate the metabolic and cardiac autonomic responses during dynamic resistance exercise in patients with Coronary Artery Disease (CAD). METHOD: Twenty men (age = 63±7 years) with CAD [Left Ventricular Ejection Fraction (LVEF) = 60±10%] underwent a PRE protocol on a leg press until maximal exertion. The protocol began at 10% of One Repetition Maximum Test (1-RM), with subsequent increases of 10% until maximal exhaustion. Heart Rate Variability (HRV) indices from Poincaré plots (SD1, SD2, SD1/SD2) and time domain (rMSSD and RMSM), and blood lactate were determined at rest and during PRE. RESULTS: Significant alterations in HRV and blood lactate were observed starting at 30% of 1-RM (p<0.05). Bland-Altman plots revealed a consistent agreement between blood lactate threshold (LT) and rMSSD threshold (rMSSDT) and between LT and SD1 threshold (SD1T). Relative values of 1-RM in all LT, rMSSDT and SD1T did not differ (29%±5 vs 28%±5 vs 29%±5 Kg, respectively). CONCLUSION: HRV during PRE could be a feasible noninvasive method of determining AT in CAD patients to plan intensities during cardiac rehabilitation.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Doença da Artéria Coronariana / Limiar Anaeróbio / Exercício Físico / Ácido Láctico / Treinamento Resistido / Frequência Cardíaca Limite: Aged / Humans Idioma: En Revista: Braz J Phys Ther Assunto da revista: MEDICINA FISICA / REABILITACAO Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil
Texto completo
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Imprimir
XML
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Doença da Artéria Coronariana / Limiar Anaeróbio / Exercício Físico / Ácido Láctico / Treinamento Resistido / Frequência Cardíaca Limite: Aged / Humans Idioma: En Revista: Braz J Phys Ther Assunto da revista: MEDICINA FISICA / REABILITACAO Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil