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        "resumen" => "<span class="elsevierStyleSectionTitle">Background</span><p class="elsevierStyleSimplePara elsevierViewall">A continuously paced shuttle walk test &#40;SWTp&#41; was developed to test the hypothesis that speed and rhythm could be more optimally imposed by an easier-to-follow sound stimulus at every step&#46; The objective of this study was to assess the reproducibility of the SWTp and to compare the performance of patients with chronic obstructive pulmonary disease &#40;COPD&#41; on the conventional and optimally paced forms of the test&#46;</p> <span class="elsevierStyleSectionTitle">Patients and methods</span><p class="elsevierStyleSimplePara elsevierViewall">The walk test results of 24 COPD patients were studied&#46; All patients completed 2 SWTp sessions and a conventional SWT in random order&#44; after an initial practice test for each&#46; A portable device was used to measure peak oxygen uptake &#40;VO<span class="elsevierStyleInf">2</span>&#41; in 6 patients&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">The intraclass correlation coefficient &#40;Cronbach&#39;s &#945;&#41; was 0&#46;95 for the STWp&#46; The Pearson correlation coefficient between distance walked and peak VO<span class="elsevierStyleInf">2</span> in the SWTp was 0&#46;86 &#40;<span class="elsevierStyleItalic">P</span>&#60;&#46;02&#41;&#46; Better performance was achieved during the SWTp &#40;peak VO<span class="elsevierStyleInf">2</span>&#44; 3&#46;30 mL&#47;kg&#47;min&#59; <span class="elsevierStyleItalic">P</span>&#60;&#46;01&#59; distance walked&#44; 32 m&#44; <span class="elsevierStyleItalic">P</span>&#60;&#46;001&#41; than during the conventional SWT&#46; The SWTp showed excellent reproducibility&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p class="elsevierStyleSimplePara elsevierViewall">COPD patients can achieve better performance with the stimuli provided in the SWTp than in the conventional SWT&#46;</p>"
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        "resumen" => "<span class="elsevierStyleSectionTitle">Objetivo</span><p class="elsevierStyleSimplePara elsevierViewall">Se ha desarrollado una prueba de lanzadera por tramos &#40;SWT&#44; de <span class="elsevierStyleItalic">shuttle walk test</span>&#41; con estimulaci&#243;n auditiva continua &#40;SWTp&#44; <span class="elsevierStyleItalic">paced shuttle walk test</span>&#41; para comprobar la hip&#243;tesis de que es posible que los pacientes consigan una velocidad y un ritmo mejores mediante la aplicaci&#243;n de un est&#237;mulo sonoro&#44; de seguimiento m&#225;s f&#225;cil por ellos y correspondiente a cada paso que realizan en la prueba&#46; El objetivo de este estudio ha sido evaluar la reproducibilidad de la SWTp y comparar el rendimiento de los pacientes con enfermedad pulmonar obstructiva cr&#243;nica &#40;EPOC&#41; en la SWT con estimulaci&#243;n sonora convencional y en la SWTp con estimulaci&#243;n sonora &#243;ptima&#46;</p> <span class="elsevierStyleSectionTitle">Pacientes y m&#233;todos</span><p class="elsevierStyleSimplePara elsevierViewall">Se han evaluado los resultados obtenidos por 24 pacientes con EPOC en la prueba de ejercicio de caminar&#46; Todos los pacientes completaron 2 sesiones de SWTp y una sesi&#243;n de SWT convencional&#44; tras su distribuci&#243;n aleatoria a los grupos y despu&#233;s de efectuar una sesi&#243;n inicial de pr&#225;ctica con cada una de las pruebas&#46; Se utiliz&#243; un dispositivo port&#225;til para determinar el consumo de ox&#237;geno &#40;VO<span class="elsevierStyleInf">2</span>&#41; m&#225;ximo en 6 pacientes&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p class="elsevierStyleSimplePara elsevierViewall">El coeficiente de correlaci&#243;n intraclase &#40;alfa de Cronbach&#41; fue de 0&#44;95 para la STWp&#46; El coeficiente de correlaci&#243;n de Pearson entre la distancia recorrida en la prueba y el VO<span class="elsevierStyleInf">2</span> m&#225;ximo respecto a la SWTp fue de 0&#44;86 &#40;p &#60; 0&#44;02&#41;&#46; Se consigui&#243; un rendimiento mejor durante la SWTp &#40;VO<span class="elsevierStyleInf">2</span> m&#225;ximo de 3&#44;30 ml&#47;kg&#47;min&#44; p &#60; 0&#44;01&#59; distancia recorrida de 32 m&#44; p &#60; 0&#44;001&#41;&#44; en comparaci&#243;n con la SWT convencional&#46; La SWTp se acompa&#241;&#243; de una reproducibilidad excelente&#46;</p> <span class="elsevierStyleSectionTitle">Conclusiones</span><p class="elsevierStyleSimplePara elsevierViewall">Los pacientes con EPOC pueden alcanzar un rendimiento mayor con el est&#237;mulo auditivo proporcionado en la SWTp que con el correspondiente a la SWT&#46;</p>"
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Vol. 42. Issue 7.
Pages 338-343 (July 2006)
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Vol. 42. Issue 7.
Pages 338-343 (July 2006)
Original Articles
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Optimizing Exercise Performance With a Continuously Paced Shuttle Walk Test for Patients With Chronic Obstructive Pulmonary Disease
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Fernanda W. Rosa
Corresponding author
fwrosa@yahoo.com.br

Correspondence: Dr. Fernanda Warken Rosa. Rua Manoel Andrade, 201 - Ap 401. Cond. Pituba Ville. Pituba. Salvador. Brazil
, Aquiles Camelier, Anamaria Mayer, José R. Jardim
Pulmonary Division/Rehabilitation Center, Federal University of São Paulo, Brazil
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Background

A continuously paced shuttle walk test (SWTp) was developed to test the hypothesis that speed and rhythm could be more optimally imposed by an easier-to-follow sound stimulus at every step. The objective of this study was to assess the reproducibility of the SWTp and to compare the performance of patients with chronic obstructive pulmonary disease (COPD) on the conventional and optimally paced forms of the test.

Patients and methods

The walk test results of 24 COPD patients were studied. All patients completed 2 SWTp sessions and a conventional SWT in random order, after an initial practice test for each. A portable device was used to measure peak oxygen uptake (VO2) in 6 patients.

Results

The intraclass correlation coefficient (Cronbach's α) was 0.95 for the STWp. The Pearson correlation coefficient between distance walked and peak VO2 in the SWTp was 0.86 (P<.02). Better performance was achieved during the SWTp (peak VO2, 3.30 mL/kg/min; P<.01; distance walked, 32 m, P<.001) than during the conventional SWT. The SWTp showed excellent reproducibility.

Conclusions

COPD patients can achieve better performance with the stimuli provided in the SWTp than in the conventional SWT.

Key words:
Pulmonary disease chronic
obstructive
Exercise test
Physical activity
Reproducibility
Rehabilitation
Objetivo

Se ha desarrollado una prueba de lanzadera por tramos (SWT, de shuttle walk test) con estimulación auditiva continua (SWTp, paced shuttle walk test) para comprobar la hipótesis de que es posible que los pacientes consigan una velocidad y un ritmo mejores mediante la aplicación de un estímulo sonoro, de seguimiento más fácil por ellos y correspondiente a cada paso que realizan en la prueba. El objetivo de este estudio ha sido evaluar la reproducibilidad de la SWTp y comparar el rendimiento de los pacientes con enfermedad pulmonar obstructiva crónica (EPOC) en la SWT con estimulación sonora convencional y en la SWTp con estimulación sonora óptima.

Pacientes y métodos

Se han evaluado los resultados obtenidos por 24 pacientes con EPOC en la prueba de ejercicio de caminar. Todos los pacientes completaron 2 sesiones de SWTp y una sesión de SWT convencional, tras su distribución aleatoria a los grupos y después de efectuar una sesión inicial de práctica con cada una de las pruebas. Se utilizó un dispositivo portátil para determinar el consumo de oxígeno (VO2) máximo en 6 pacientes.

Resultados

El coeficiente de correlación intraclase (alfa de Cronbach) fue de 0,95 para la STWp. El coeficiente de correlación de Pearson entre la distancia recorrida en la prueba y el VO2 máximo respecto a la SWTp fue de 0,86 (p < 0,02). Se consiguió un rendimiento mejor durante la SWTp (VO2 máximo de 3,30 ml/kg/min, p < 0,01; distancia recorrida de 32 m, p < 0,001), en comparación con la SWT convencional. La SWTp se acompañó de una reproducibilidad excelente.

Conclusiones

Los pacientes con EPOC pueden alcanzar un rendimiento mayor con el estímulo auditivo proporcionado en la SWTp que con el correspondiente a la SWT.

Palabras clave:
Enfermedad pulmonar obstructiva crónica
Prueba de esfuerzo
Actividad física
Reproducibilidad
Rehabilitación
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This study was partially funded by CAPES, CNPq, and FAPESP, Brazil.

Copyright © 2006. Sociedad Española de Neumología y Cirugía Torácica (SEPAR)
Archivos de Bronconeumología
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