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Respiratory muscle endurance is limited by lower ventilatory efficiency in post-myocardial infarction patients
Neves, Laura M. T.; Karsten, Marlus; Neves, Victor R.; Beltrame, Thomas; Borghi-Silva, Audrey; Catai, Aparecida M..
Afiliación
  • Neves, Laura M. T.; Universidade Federal de Sao Carlos. Nucleus of Research in Physical Exercise. Cardiovascular Physical Therapy Laboratory. Sao Carlos. BR
  • Karsten, Marlus; Universidade Federal de Sao Carlos. Nucleus of Research in Physical Exercise. Cardiovascular Physical Therapy Laboratory. Sao Carlos. BR
  • Neves, Victor R.; Universidade Federal de Sao Carlos. Nucleus of Research in Physical Exercise. Cardiovascular Physical Therapy Laboratory. Sao Carlos. BR
  • Beltrame, Thomas; Universidade Federal de Sao Carlos. Nucleus of Research in Physical Exercise. Cardiovascular Physical Therapy Laboratory. Sao Carlos. BR
  • Borghi-Silva, Audrey; Universidade Federal de Sao Carlos. Nucleus of Research in Physical Exercise. Cardiovascular Physical Therapy Laboratory. Sao Carlos. BR
  • Catai, Aparecida M.; Universidade Federal de Sao Carlos. Nucleus of Research in Physical Exercise. Cardiovascular Physical Therapy Laboratory. Sao Carlos. BR
Braz. j. phys. ther. (Impr.) ; 18(1): 1-8, Jan-Feb/2014. tab, graf
Article en En | LILACS | ID: lil-704639
Biblioteca responsable: BR1.1
ABSTRACT

Background:

Reduced respiratory muscle endurance (RME) contributes to increased dyspnea upon exertion in patients with cardiovascular disease.

Objective:

The objective was to characterize ventilatory and metabolic responses during RME tests in post-myocardial infarction patients without respiratory muscle weakness.

Method:

Twenty-nine subjects were allocated into three groups recent myocardial infarction group (RG, n=9), less-recent myocardial infarction group (LRG, n=10), and control group (CG, n=10). They underwent two RME tests (incremental and constant pressure) with ventilatory and metabolic analyses. One-way ANOVA and repeated measures one-way ANOVA, both with Tukey post-hoc, were used between groups and within subjects, respectively.

Results:

Patients from the RG and LRG presented lower metabolic equivalent and ventilatory efficiency than the CG on the second (50± 06, 50± 5 vs. 42± 4) and third part (50± 11, 51± 10 vs. 43± 3) of the constant pressure RME test and lower metabolic equivalent during the incremental pressure RME test. Additionally, at the peak of the incremental RME test, RG patients had lower oxygen uptake than the CG.

Conclusions:

Post-myocardial infarction patients present lower ventilatory efficiency during respiratory muscle endurance tests, which appears to explain their inferior performance in these tests even in the presence of lower pressure overload and lower metabolic equivalent. .
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Texto completo: 1 Colección: 01-internacional Base de datos: LILACS Asunto principal: Músculos Respiratorios / Infarto del Miocardio Tipo de estudio: Observational_studies / Prevalence_studies / Risk_factors_studies Límite: Adult / Aged / Humans Idioma: En Revista: Braz. j. phys. ther. (Impr.) Asunto de la revista: MEDICINA FISICA E REABILITACAO Año: 2014 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil
Texto completo
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Imprimir
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Texto completo: 1 Colección: 01-internacional Base de datos: LILACS Asunto principal: Músculos Respiratorios / Infarto del Miocardio Tipo de estudio: Observational_studies / Prevalence_studies / Risk_factors_studies Límite: Adult / Aged / Humans Idioma: En Revista: Braz. j. phys. ther. (Impr.) Asunto de la revista: MEDICINA FISICA E REABILITACAO Año: 2014 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil