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        "resumen" => "<span class="elsevierStyleSectionTitle">Objective</span><p class="elsevierStyleSimplePara elsevierViewall">During physical exertion&#44; the ventilatory response of patients with severe chronic obstructive pulmonary disease &#40;COPD&#41; is more rapid and shallow than that of healthy subjects&#46; There is evidence that exercise training can alter breathing pattern in COPD patients&#46; The purpose of the present study was to observe the effects of physical training on patients with severe COPD and to determine whether or not any possible changes were maintained over time&#46;</p> <span class="elsevierStyleSectionTitle">Material and method</span><p class="elsevierStyleSimplePara elsevierViewall">Patients with severe COPD without bronchial reversibility were enrolled in a randomized controlled trial of a peripheral muscle training program carried out in a hospital setting&#46; All enrolled patients were clinically stable&#44; without exacerbation&#44; and were randomly assigned to a training program of high &#40;group A&#41; or low &#40;group B&#41; intensity&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">Thirty-five men with severe COPD in stable condition &#40;mean &#91;SD&#93; forced expiratory volume in 1 second at 41&#37;&#91;7&#37;&#93;&#41; were enrolled in the study&#46; The mean age was 64&#40;5&#41; years&#46; Group A underwent training at 70&#40;22&#41; W and group B at 35&#40;10&#41; W&#44; such that the estimated total work was 8050&#40;2882&#41; kJ in group A and 4044&#40;1205&#41; kJ in group B&#46; Breathing pattern changes were detected in exercise tests only for group A patients&#44; but the changes were not maintained 12 months after the end of the program&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p class="elsevierStyleSimplePara elsevierViewall">Intense training produces changes in the breathing pattern of patients with severe COPD&#46; The changes are not specific to the task performed&#44; not dependent on lactate production&#44; and not maintained over the long term&#46;</p>"
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        "resumen" => "<span class="elsevierStyleSectionTitle">Objetivo</span><p class="elsevierStyleSimplePara elsevierViewall">Durante el esfuerzo f&#237;sico la respuesta ventilatoria de los enfermos con enfermedad pulmonar obstructiva cr&#243;nica &#40;EPOC&#41; grave es m&#225;s r&#225;pida y superficial que la de los sujetos sanos&#44; y existen indicios de que el entrenamiento f&#237;sico podr&#237;a cambiar el patr&#243;n ventilatorio de estos pacientes&#46; El prop&#243;sito del presente estudio fue comprobar los efectos que el entrenamiento f&#237;sico de los pacientes con EPOC grave tiene sobre el patr&#243;n ventilatorio&#44; as&#237; como determinar o no el mantenimiento de los posibles cambios producidos en el tiempo&#46;</p> <span class="elsevierStyleSectionTitle">Material y m&#233;todo</span><p class="elsevierStyleSimplePara elsevierViewall">Se realiz&#243; un estudio aleatorio y controlado con pacientes con EPOC grave sin reversibilidad bronquial&#46; En estos pacientes se efectu&#243; una intervenci&#243;n mediante entrenamiento f&#237;sico&#46; Los pacientes fueron remitidos al hospital para entrenamiento muscular perif&#233;rico&#44; todos ellos en situaci&#243;n cl&#237;nica estable&#44; sin exacerbaci&#243;n&#44; y fueron asignados a dos programas diferentes de entrenamiento f&#237;sico&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p class="elsevierStyleSimplePara elsevierViewall">Se estudiaron 35 pacientes varones con EPOC grave&#44; estables &#40;volumen espiratorio forzado en el primer segundo del 41 &#177; 7&#37;&#41;&#44; con una edad media de 64 &#177; 5 a&#241;os&#44; divididos en dos grupos con diferente potencia media estimada de entrenamiento &#40;grupo A&#58; 70 &#177; 22 W&#59; grupo B&#58; 35 &#177; 10 W&#41; y trabajo total desarrollado &#40;grupo A&#58; 8&#46;050 &#177; 2&#46;882 kJ&#59; grupo B&#58; 4&#46;044 &#177; 1&#46;205 kJ&#41;&#46; S&#243;lo se objetivaron cambios en el patr&#243;n ventilatorio durante el ejercicio realizado durante la prueba de esfuerzo en el grupo A&#44; que no se mantuvieron a los 12 meses de finalizado el programa&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p class="elsevierStyleSimplePara elsevierViewall">El entrenamiento intenso produce cambios en el patr&#243;n ventilatorio de los pacientes con EPOC grave que son inespec&#237;ficos de la tarea e independientes de la producci&#243;n de lactato&#44; y que no se mantienen a largo plazo&#46;</p>"
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Original Articles
Effects of Muscle Training on Breathing Pattern in Patients With Severe Chronic Obstructive Pulmonary Disease
J.M. Ruiz de Oña Lacastaa,
Corresponding author
jmruiz@separ.es

Correspondence: Dr. J.M. Ruiz de Oña Lacasta. Unidad de Gestión Clínica de Neumología. Hospital Nuestra Señora Sra. del Prado. Ctra. de Madrid, km 114. 45600 Talavera de la Reina. Toledo. España
, J. García de Pedrob, L. Puente Maestub, D. Llorente Iñigob, J. Celdrán Gila, J.M. Cubillo Marcosb
a Unidad de Gestión Clínica de Neumología, Hospital Nuestra Señora del Prado, Talavera de la Reina, Toledo, Spain
b Servicio de Neumología, Hospital General Universitario Gregorio Marañón, Madrid, Spain
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    "fechaRecibido" => "2003-05-05"
    "fechaAceptado" => "2003-07-01"
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          "clase" => "keyword"
          "titulo" => "Key words"
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            0 => "Chronic obstructive pulmonary disease &#40;COPD&#41;"
            1 => "Ventilation"
            2 => "Exercise test"
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          "clase" => "keyword"
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          "palabras" => array:3 [
            0 => "Enfermedad pulmonar obstructiva cr&#243;nica &#40;EPOC&#41;"
            1 => "Ventilaci&#243;n"
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        "resumen" => "<span class="elsevierStyleSectionTitle">Objective</span><p class="elsevierStyleSimplePara elsevierViewall">During physical exertion&#44; the ventilatory response of patients with severe chronic obstructive pulmonary disease &#40;COPD&#41; is more rapid and shallow than that of healthy subjects&#46; There is evidence that exercise training can alter breathing pattern in COPD patients&#46; The purpose of the present study was to observe the effects of physical training on patients with severe COPD and to determine whether or not any possible changes were maintained over time&#46;</p> <span class="elsevierStyleSectionTitle">Material and method</span><p class="elsevierStyleSimplePara elsevierViewall">Patients with severe COPD without bronchial reversibility were enrolled in a randomized controlled trial of a peripheral muscle training program carried out in a hospital setting&#46; All enrolled patients were clinically stable&#44; without exacerbation&#44; and were randomly assigned to a training program of high &#40;group A&#41; or low &#40;group B&#41; intensity&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">Thirty-five men with severe COPD in stable condition &#40;mean &#91;SD&#93; forced expiratory volume in 1 second at 41&#37;&#91;7&#37;&#93;&#41; were enrolled in the study&#46; The mean age was 64&#40;5&#41; years&#46; Group A underwent training at 70&#40;22&#41; W and group B at 35&#40;10&#41; W&#44; such that the estimated total work was 8050&#40;2882&#41; kJ in group A and 4044&#40;1205&#41; kJ in group B&#46; Breathing pattern changes were detected in exercise tests only for group A patients&#44; but the changes were not maintained 12 months after the end of the program&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p class="elsevierStyleSimplePara elsevierViewall">Intense training produces changes in the breathing pattern of patients with severe COPD&#46; The changes are not specific to the task performed&#44; not dependent on lactate production&#44; and not maintained over the long term&#46;</p>"
      ]
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        "resumen" => "<span class="elsevierStyleSectionTitle">Objetivo</span><p class="elsevierStyleSimplePara elsevierViewall">Durante el esfuerzo f&#237;sico la respuesta ventilatoria de los enfermos con enfermedad pulmonar obstructiva cr&#243;nica &#40;EPOC&#41; grave es m&#225;s r&#225;pida y superficial que la de los sujetos sanos&#44; y existen indicios de que el entrenamiento f&#237;sico podr&#237;a cambiar el patr&#243;n ventilatorio de estos pacientes&#46; El prop&#243;sito del presente estudio fue comprobar los efectos que el entrenamiento f&#237;sico de los pacientes con EPOC grave tiene sobre el patr&#243;n ventilatorio&#44; as&#237; como determinar o no el mantenimiento de los posibles cambios producidos en el tiempo&#46;</p> <span class="elsevierStyleSectionTitle">Material y m&#233;todo</span><p class="elsevierStyleSimplePara elsevierViewall">Se realiz&#243; un estudio aleatorio y controlado con pacientes con EPOC grave sin reversibilidad bronquial&#46; En estos pacientes se efectu&#243; una intervenci&#243;n mediante entrenamiento f&#237;sico&#46; Los pacientes fueron remitidos al hospital para entrenamiento muscular perif&#233;rico&#44; todos ellos en situaci&#243;n cl&#237;nica estable&#44; sin exacerbaci&#243;n&#44; y fueron asignados a dos programas diferentes de entrenamiento f&#237;sico&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p class="elsevierStyleSimplePara elsevierViewall">Se estudiaron 35 pacientes varones con EPOC grave&#44; estables &#40;volumen espiratorio forzado en el primer segundo del 41 &#177; 7&#37;&#41;&#44; con una edad media de 64 &#177; 5 a&#241;os&#44; divididos en dos grupos con diferente potencia media estimada de entrenamiento &#40;grupo A&#58; 70 &#177; 22 W&#59; grupo B&#58; 35 &#177; 10 W&#41; y trabajo total desarrollado &#40;grupo A&#58; 8&#46;050 &#177; 2&#46;882 kJ&#59; grupo B&#58; 4&#46;044 &#177; 1&#46;205 kJ&#41;&#46; S&#243;lo se objetivaron cambios en el patr&#243;n ventilatorio durante el ejercicio realizado durante la prueba de esfuerzo en el grupo A&#44; que no se mantuvieron a los 12 meses de finalizado el programa&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p class="elsevierStyleSimplePara elsevierViewall">El entrenamiento intenso produce cambios en el patr&#243;n ventilatorio de los pacientes con EPOC grave que son inespec&#237;ficos de la tarea e independientes de la producci&#243;n de lactato&#44; y que no se mantienen a largo plazo&#46;</p>"
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