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Determination of anaerobic threshold through heart rate and near infrared spectroscopy in elderly healthy men
Reis, Michel S.; Berton, Danilo C.; Arena, Ross; Catai, Aparecida M.; Neder, Jose A.; Borghi-Silva, Audrey.
Afiliação
  • Reis, Michel S.; Universidade Federal do Rio de Janeiro. School of Medicine. Physical Therapy Department. Rio de Janeiro. BR
  • Berton, Danilo C.; Universidade Federal do Rio de Janeiro. School of Medicine. Physical Therapy Department. Rio de Janeiro. BR
  • Arena, Ross; Universidade Federal do Rio de Janeiro. School of Medicine. Physical Therapy Department. Rio de Janeiro. BR
  • Catai, Aparecida M.; Universidade Federal do Rio de Janeiro. School of Medicine. Physical Therapy Department. Rio de Janeiro. BR
  • Neder, Jose A.; Universidade Federal do Rio de Janeiro. School of Medicine. Physical Therapy Department. Rio de Janeiro. BR
  • Borghi-Silva, Audrey; Universidade Federal do Rio de Janeiro. School of Medicine. Physical Therapy Department. Rio de Janeiro. BR
Braz. j. phys. ther. (Impr.) ; 17(5): 506-515, out. 2013. tab, graf
Article em En | LILACS | ID: lil-689921
Biblioteca responsável: BR1.1
ABSTRACT

BACKGROUND:

Aging leads to low functional capacity and this can be reversed by safe and adequate exercise prescription.

OBJECTIVE:

The aim of this study was to identify the anaerobic threshold (AT) obtained from the V-slope method as well as visual inspection of oxyhemoglobin ( O2Hb) and deoxyhemoglobin (HHb) curves and compare findings with the heteroscedastic (HS) method applied to carbon dioxide production ( CO2), heart rate (HR), and HHb data in healthy elderly men. A secondary aim was to assess the degree of agreement between methods for AT determination.

METHOD:

Fourteen healthy men (61.4±6.3 years) underwent cardiopulmonary exercise testing (CPX) on a cycle ergometer until physical exhaustion. Biological signals collected during CPX included ventilatory and metabolic variables; spectroscopy quasi-infrared rays - NIRS; and HR through a cardio-frequency meter.

RESULTS:

We observed temporal equivalence and similar values of power (W), absolute oxygen consumption (O2 - mL/min), relative O2 ( mL.Kg - 1.min -1), and HR at AT by the detection methods performed. In addition, by the Bland-Altman plot, HR confirmed good agreement between the methods with biases between -1.3 and 3.5 beats per minute.

CONCLUSIONS:

(i) all detection methods were sensitive in identifying AT, including the HS applied to HR and (ii) the methods showed a good correlation in the identification of AT. Thus, these results support HR as valid and readily available parameter in determining AT in healthy elderly men. .
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Texto completo: 1 Coleções: 01-internacional Base de dados: LILACS Assunto principal: Limiar Anaeróbio / Espectroscopia de Luz Próxima ao Infravermelho / Frequência Cardíaca Tipo de estudo: Prognostic_studies Limite: Aged / Humans / Male Idioma: En Revista: Braz. j. phys. ther. (Impr.) Assunto da revista: MEDICINA FISICA E REABILITACAO Ano de publicação: 2013 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil

Texto completo: 1 Coleções: 01-internacional Base de dados: LILACS Assunto principal: Limiar Anaeróbio / Espectroscopia de Luz Próxima ao Infravermelho / Frequência Cardíaca Tipo de estudo: Prognostic_studies Limite: Aged / Humans / Male Idioma: En Revista: Braz. j. phys. ther. (Impr.) Assunto da revista: MEDICINA FISICA E REABILITACAO Ano de publicação: 2013 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil