Original Articles
Effect of Inspiratory Muscle Training on Muscle Strength and Quality of Life in Patients With Chronic Airflow Limitation: a Randomized Controlled Trial
P. Seróna,
, P. Riedemannb, S. Muñozc, A. Doussoulinb,d, P. Villarroelb,c, X. Ceab
Corresponding author
pseron@ufro.cl
Correspondence: Prof.a P. Serón. Facultad de Medicina. Universidad de La Frontera. Manuel Montt, 112. Temuco. Chile
Correspondence: Prof.a P. Serón. Facultad de Medicina. Universidad de La Frontera. Manuel Montt, 112. Temuco. Chile
a Departamento de Cirugía y Traumatología, Capacitación, Investigación y Gestión para la Salud Basada en Evidencias (CIGES), Facultad de Medicina, Universidad de la Frontera, Temuco, Chile
b Departamento de Medicina Interna, CIGES, Facultad de Medicina, Universidad de la Frontera, Temuco, Chile
c Departamento de Salud Pública, CIGES, Facultad de Medicina, Universidad de la Frontera, Temuco, Chile
d Departamento de Pediatría, CIGES, Facultad de Medicina, Universidad de la Frontera, Temuco, Chile
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Doussoulin, P. Villarroel, X. Cea" "autores" => array:6 [ 0 => array:5 [ "preGrado" => "Dra." "nombre" => "P." "apellidos" => "Serón" "email" => array:1 [ 0 => "pseron@ufro.cl" ] "referencia" => array:2 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff1" ] 1 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">*</span>" "identificador" => "cor1" ] ] ] 1 => array:3 [ "nombre" => "P." "apellidos" => "Riedemann" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">b</span>" "identificador" => "aff2" ] ] ] 2 => array:3 [ "nombre" => "S." "apellidos" => "Muñoz" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">c</span>" "identificador" => "aff3" ] ] ] 3 => array:3 [ "nombre" => "A." 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"apellidos" => "Cea" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">b</span>" "identificador" => "aff2" ] ] ] ] "afiliaciones" => array:4 [ 0 => array:3 [ "entidad" => "Departamento de Cirugía y Traumatología, Capacitación, Investigación y Gestión para la Salud Basada en Evidencias (CIGES), Facultad de Medicina, Universidad de la Frontera, Temuco, Chile" "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff1" ] 1 => array:3 [ "entidad" => "Departamento de Medicina Interna, CIGES, Facultad de Medicina, Universidad de la Frontera, Temuco, Chile" "etiqueta" => "<span class="elsevierStyleSup">b</span>" "identificador" => "aff2" ] 2 => array:3 [ "entidad" => "Departamento de Salud Pública, CIGES, Facultad de Medicina, Universidad de la Frontera, Temuco, Chile" "etiqueta" => "<span class="elsevierStyleSup">c</span>" "identificador" => "aff3" ] 3 => array:3 [ "entidad" => "Departamento de Pediatría, CIGES, Facultad de Medicina, Universidad de la Frontera, Temuco, Chile" "etiqueta" => "<span class="elsevierStyleSup">d</span>" "identificador" => "aff4" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor1" "etiqueta" => "*" "correspondencia" => "Correspondence: Prof.<span class="elsevierStyleSup">a</span> P. Serón. Facultad de Medicina. Universidad de La Frontera. Manuel Montt, 112. Temuco. Chile" ] ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "fechaRecibido" => "2004-05-03" "fechaAceptado" => "2005-02-22" "PalabrasClave" => array:2 [ "en" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Key Words" "identificador" => "xpalclavsec153767" "palabras" => array:5 [ 0 => "Health-related quality of life" 1 => "Chronic airflow limitation" 2 => "Respiratory rehabilitation" 3 => "Respiratory muscles" 4 => "Randomized controlled trial" ] ] ] "es" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Palabras clave" "identificador" => "xpalclavsec153766" "palabras" => array:5 [ 0 => "Calidad de vida relacionada con la salud" 1 => "Limitación crónica del flujo aéreo" 2 => "Rehabilitación pulmonar" 3 => "Músculos respiratorios" 4 => "Ensayo clínico" ] ] ] ] "tieneResumen" => true "resumen" => array:2 [ "en" => array:1 [ "resumen" => "<span class="elsevierStyleSectionTitle">Objective</span><p class="elsevierStyleSimplePara elsevierViewall">Chronic airflow limitation (CAL) is a significant cause of illness and death. Inspiratory muscle training has been described as a technique for managing CAL. The aim of the present study was to evaluate the effectiveness of inspiratory muscle training on improving physiological and functional variables.</p> <span class="elsevierStyleSectionTitle">Patients and methods</span><p class="elsevierStyleSimplePara elsevierViewall">Randomized controlled trial in which 35 patients with CAL were assigned to receive either an experimental (n=17) or control (n=18) intervention. The experimental intervention consisted of 2 months of inspiratory muscle training using a device that administered a resistive load of 40% of maximal static inspiratory mouth pressure (PI<span class="elsevierStyleInf">max</span>). Inspiratory muscle strength, exercise tolerance, respiratory function, and quality of life were assessed.</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">Significant improvement in inspiratory muscle strength was observed in the experimental training group (P=.02). All patients improved over time in both groups (<span class="elsevierStyleItalic">P</span><.001). PI<span class="elsevierStyleInf">max</span> increased by 8.9 cm H<span class="elsevierStyleInf">2</span>O per month of training. Likewise, the health-related quality of life scores improved by 0.56 points.</p> <span class="elsevierStyleSectionTitle">Conclusion</span><p class="elsevierStyleSimplePara elsevierViewall">Use of a threshold loading device is effective for strengthening inspiratory muscles as measured by PI<span class="elsevierStyleInf">max</span> after the first month of training in patients with CAL. The long-term effectiveness of such training and its impact on quality of life should be studied in a larger number of patients.</p>" ] "es" => array:1 [ "resumen" => "<span class="elsevierStyleSectionTitle">Objetivo</span><p class="elsevierStyleSimplePara elsevierViewall">La limitación crónica del flujo aéreo (LCFA) es causa importante de morbimortalidad. Para su manejo se describe la rehabilitación pulmonar, que incluye el entrenamiento muscular inspiratorio. El objetivo del presente estu-dio fue evaluar la efectividad del entrenamiento muscular inspiratorio par mejorar variables fisiológicas y funcionales.</p> <span class="elsevierStyleSectionTitle">Pacientes y métodos</span><p class="elsevierStyleSimplePara elsevierViewall">Ensayo clínico controlado y aleatorizado en 35 pacientes con LCFA, de los que 17 recibieron una intervención experimental y 18 una de control. La intervención experimental consistió en un programa de 2 meses de entrenamiento de músculos inspiratorios usando un dis-positivo que administraba una resistencia de un 40% de la presión inspiratoria máxima. Se evaluaron la fuerza muscular inspiratoria, la tolerancia al ejercicio, la función respira-toria y la calidad de vida.</p> <span class="elsevierStyleSectionTitle">Resultados</span><p class="elsevierStyleSimplePara elsevierViewall">El tratamiento experimental mostró una mejoría significativa en la fuerza muscular inspiratoria (p = 0,02). Todos los pacientes mejoraron a lo largo del tiempo independientemente del tratamiento experimental (p < 0,001); la presión inspiratoria máxima aumentó en 8,9 cm H<span class="elsevierStyleInf">2</span>O por mes de entrenamiento; asimismo, hubo un aumento de 0,56 puntos en el cuestionario que evaluó la calidad de vida relacionada con la salud.</p> <span class="elsevierStyleSectionTitle">Conclusión</span><p class="elsevierStyleSimplePara elsevierViewall">La utilización específica de un dispositivo de carga umbral es efectiva en el fortalecimiento muscular inspiratorio, medido a través de la presión inspiratoria máxima, al primer mes de entrenamiento en pacientes con LCFA. Es necesario estudiar su efecto a largo plazo y su impacto sobre la calidad de vida en un mayor número de pacientes.</p>" ] ] "NotaPie" => array:1 [ 0 => array:1 [ "nota" => "<p class="elsevierStyleNotepara">This study was funded by the Department of Research and Development of Universidad de la Frontera, Temuco, Chile (project IN 00/01).</p>" ] ] "bibliografia" => array:2 [ "titulo" => "REFERENCES" "seccion" => array:1 [ 0 => array:1 [ "bibliografiaReferencia" => array:34 [ 0 => array:3 [ "identificador" => "bib1" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Consenso Nacional en Enfermedad Pulmonar Obstructiva Crónica (EPOC)" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:1 [ 0 => "P González" ] ] ] ] ] "host" => array:1 [ 0 => array:1 [ "Revista" => array:5 [ "tituloSerie" => "Rev Ch Enf Respir" "fecha" => "1998" "volumen" => "14" "paginaInicial" => "77" "paginaFinal" => "82" ] ] ] ] ] ] 1 => array:3 [ "identificador" => "bib2" "etiqueta" => "2" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "ATS statement. 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| Year/Month | Html | Total | |
|---|---|---|---|
| 2024 November | 4 | 3 | 7 |
| 2024 October | 29 | 16 | 45 |
| 2024 September | 28 | 12 | 40 |
| 2024 August | 42 | 32 | 74 |
| 2024 July | 27 | 24 | 51 |
| 2024 June | 24 | 22 | 46 |
| 2024 May | 33 | 31 | 64 |
| 2024 April | 22 | 21 | 43 |
| 2024 March | 20 | 17 | 37 |
| 2024 February | 18 | 25 | 43 |
| 2023 March | 1 | 0 | 1 |
| 2023 February | 15 | 25 | 40 |
| 2023 January | 18 | 25 | 43 |
| 2022 December | 19 | 24 | 43 |
| 2022 November | 20 | 20 | 40 |
| 2022 October | 21 | 32 | 53 |
| 2022 September | 14 | 23 | 37 |
| 2022 August | 21 | 39 | 60 |
| 2022 July | 15 | 41 | 56 |
| 2022 June | 11 | 30 | 41 |
| 2022 May | 18 | 27 | 45 |
| 2022 April | 10 | 28 | 38 |
| 2022 March | 12 | 31 | 43 |
| 2022 February | 19 | 26 | 45 |
| 2022 January | 13 | 33 | 46 |
| 2021 December | 15 | 50 | 65 |
| 2021 November | 17 | 47 | 64 |
| 2021 October | 18 | 34 | 52 |
| 2021 September | 14 | 47 | 61 |
| 2021 August | 8 | 24 | 32 |
| 2021 July | 14 | 25 | 39 |
| 2021 June | 17 | 26 | 43 |
| 2021 May | 12 | 26 | 38 |
| 2021 April | 26 | 55 | 81 |
| 2021 March | 21 | 21 | 42 |
| 2021 February | 6 | 22 | 28 |
| 2021 January | 10 | 13 | 23 |
| 2020 December | 14 | 19 | 33 |
| 2020 November | 10 | 13 | 23 |
| 2020 October | 8 | 7 | 15 |
| 2020 September | 8 | 9 | 17 |
| 2020 August | 16 | 15 | 31 |
| 2020 July | 18 | 26 | 44 |
| 2020 June | 24 | 13 | 37 |
| 2020 May | 36 | 27 | 63 |
| 2020 April | 18 | 18 | 36 |
| 2020 March | 30 | 12 | 42 |
| 2020 February | 71 | 19 | 90 |
| 2020 January | 53 | 18 | 71 |
| 2019 December | 30 | 18 | 48 |
| 2019 November | 15 | 14 | 29 |
| 2019 October | 15 | 7 | 22 |
| 2019 September | 7 | 14 | 21 |
| 2019 August | 19 | 4 | 23 |
| 2019 July | 10 | 16 | 26 |
| 2019 June | 4 | 9 | 13 |
| 2019 May | 10 | 10 | 20 |
| 2019 April | 8 | 14 | 22 |
| 2019 March | 16 | 16 | 32 |
| 2019 February | 14 | 10 | 24 |
| 2019 January | 11 | 13 | 24 |
| 2018 December | 7 | 10 | 17 |
| 2018 November | 17 | 12 | 29 |
| 2018 October | 17 | 13 | 30 |
| 2018 September | 16 | 8 | 24 |
| 2018 May | 11 | 1 | 12 |
| 2018 April | 7 | 6 | 13 |
| 2018 March | 2 | 1 | 3 |
| 2018 February | 4 | 9 | 13 |
| 2018 January | 2 | 5 | 7 |
| 2017 December | 5 | 10 | 15 |
| 2017 November | 5 | 7 | 12 |
| 2017 October | 4 | 8 | 12 |
| 2017 September | 5 | 11 | 16 |
| 2017 August | 4 | 16 | 20 |
| 2017 July | 2 | 7 | 9 |
| 2017 June | 8 | 29 | 37 |
| 2017 May | 4 | 12 | 16 |
| 2017 April | 3 | 7 | 10 |
| 2017 March | 2 | 22 | 24 |
| 2017 February | 0 | 3 | 3 |
| 2017 January | 3 | 8 | 11 |
| 2016 December | 8 | 11 | 19 |
| 2016 November | 9 | 8 | 17 |
| 2016 October | 10 | 11 | 21 |
| 2016 September | 22 | 14 | 36 |
| 2016 August | 11 | 6 | 17 |
| 2016 July | 6 | 7 | 13 |
| 2016 March | 2 | 0 | 2 |
| 2015 December | 2 | 0 | 2 |
| 2015 October | 43 | 11 | 54 |
| 2015 September | 37 | 15 | 52 |
| 2015 August | 41 | 6 | 47 |
| 2015 July | 42 | 13 | 55 |
| 2015 June | 34 | 5 | 39 |
| 2015 May | 44 | 3 | 47 |
| 2015 April | 47 | 14 | 61 |
| 2015 March | 48 | 14 | 62 |
| 2015 February | 34 | 5 | 39 |
| 2015 January | 31 | 8 | 39 |
| 2014 December | 29 | 9 | 38 |
| 2014 November | 45 | 8 | 53 |
| 2014 October | 51 | 16 | 67 |
| 2014 September | 30 | 11 | 41 |
| 2014 August | 36 | 14 | 50 |
| 2014 July | 28 | 10 | 38 |
| 2014 June | 44 | 9 | 53 |
| 2014 May | 60 | 7 | 67 |
| 2014 April | 60 | 6 | 66 |
| 2014 March | 63 | 13 | 76 |
| 2014 February | 49 | 10 | 59 |
| 2014 January | 36 | 6 | 42 |
| 2013 December | 49 | 10 | 59 |
| 2013 November | 43 | 6 | 49 |
| 2013 October | 47 | 11 | 58 |
| 2013 September | 44 | 14 | 58 |
| 2013 August | 41 | 8 | 49 |
| 2013 July | 43 | 10 | 53 |
| 2013 June | 37 | 5 | 42 |
| 2013 May | 32 | 4 | 36 |
| 2013 April | 23 | 7 | 30 |
| 2013 March | 8 | 2 | 10 |
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