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Effects of Inspiratory Muscle Training on the Functional Gait Performance of Individuals After Stroke

3 avril 2020 mis à jour par: Lorena de Oliveira Vaz Miranda

The most commonly observed sequel after stroke is muscle weakness, which can also be identified in respiratory muscles, in the acute and chronic phases, and may compromise the lung function of these individuals. Studies have shown that lower Pimax values are found in non-community ambulators, and gait velocity has been reported as an important indicator of functionality after stroke, with higher gait velocity values associated with greater community participation and better quality of life.

This study will test the hypothesis that training of the inspiratory muscles is effective in improving strength and endurance of the inspiratory muscles and functionality, including speed of gait, functional gait perfomarnce, activities of daily living and quality of life with stroke subjects.

For this clinical trial, people after stroke will be randomly allocated into either experimental or control/sham groups. The experimental group will undertake training of the inspiratory muscles with the Power Breath Medical Classic device regulated at 50% of the subjects' maximal inspiratory pressure values, five times/week over six weeks, twice a day for 15 minutes, totaling 30 minutes/day. The control group will undertake the same protocol, but the participants will receive the devices with a minimal load, wich corresponds to 1cmH2O. Both groups will participate in the rehabilitation program for 6 weeks. At baseline and post intervention, after the cessation of the interventions, researchers blinded to group allocations will collect the following outcome measures: maximal respiratory pressures, respiratory muscle endurance, functional gait performance, activities of daily living and quality of life. After 12 weeks will collect again maximal inspiratory pressures and functional gait performance.

Aperçu de l'étude

Statut

Complété

Les conditions

Intervention / Traitement

Description détaillée

The most commonly observed sequel after stroke is muscle weakness, which can also be identified in respiratory muscles, in the acute and chronic phases, and may compromise the lung function of these individuals. Studies have shown that lower Pimax values are found in non-community ambulators, and gait velocity has been reported as an important indicator of functionality after stroke, with higher gait velocity values associated with greater community participation and better Quality of life.

Aim: This study will test the hypothesis that training of the inspiratory muscles is effective in improving strength and endurance of the inspiratory muscles and functional gait perfomarnce, activities of daily living and quality of life with stroke subjects.

Design: For this prospective, triple-blinded, randomized clinical trial, people after stroke will be randomly allocated into either experimental or control/sham groups. The experimental group will undertake training of the inspiratory muscles with the PowerBreath Medic Plus regulated at 50% of the subjects' maximal inspiratory pressure (MIP) values, five times/week over six weeks during 30 minutes/day. The control group will undertake the same protocol, but the participants will receive the threshold devices with minimal resistance valves. At baseline and post intervention after the cessation of the interventions, researchers blinded to group allocations will collect all outcome measures. After 12 weeks will collect again maximal inspiratory pressures and functional gait performance.

Study outcomes: Primary outcomes will be functional gait perfomarnce. Secondary outcomes will include inspiratory endurance, activities of daily living and quality of life.

Type d'étude

Interventionnel

Inscription (Réel)

50

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Lieux d'étude

  • Brésil
    • Bahia
      • Salvador, Bahia, Brésil
        • Lorena de Oliveira Vaz Miranda

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

18 ans à 80 ans (Adulte, Adulte plus âgé)

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Tout

La description

Inclusion Criteria:

  • Adults with hemiparesis after stroke, of any etiology, ischemic or hemorrhagic, that carry out walking with or without assistance locomotion; Aged between 18 and 80 years of age; In the chronic period (between 6 months and 5 years); clinically stable (Measured through clinical and hemodynamic stability: vital signs within normal and released for physical activity by the physician), who present with inspiratory muscle weakness, defined as Pimáx less than -80cmH2O and score in the normal Mini Mental State Examination (MMSE) For schooling.

Exclusion Criteria:

  • Smokers and ex-smokers for more than five years, presence of facial paralysis that prevents lip occlusion, associated neurological diseases, orthopedic alterations that include distortions of the chest cavity or pains that prevent the tests from being performed, respiratory dysfunctions, cardiac dysfunctions that Compromise hemodynamic stability.

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Traitement
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Tripler

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: Groupe expérimental
Autre: Inspiratory Muscle Training

Experimental: IMT will include training of the inspiratory muscles five times per week over six weeks, divided into two fiftten-minute sessions of inspiratory training totaling 30 minutes of training. Thresholds regulated at 50% of the subjects' maximal inspiratory pressure values, the load being increased weekly. Associated with the IMT, subjects will participate in the rehabilitation program, when they will perform 7 sessions of physiotherapy per week, totaling 42 sessions, as well as 180 minutes per week of aerobic exercise, for six weeks.

Sham Group: This group will underwent exactly the same protocol but the participants will receive the threshold devices with the minimum resistance of the spring, which will be also concealed. The control group will also participate in the rehabilitation program and undergo the same procedures, except for the load adjustments.
Comparateur factice: Groupe de contrôle
Autre: Inspiratory Muscle Training

Experimental: IMT will include training of the inspiratory muscles five times per week over six weeks, divided into two fiftten-minute sessions of inspiratory training totaling 30 minutes of training. Thresholds regulated at 50% of the subjects' maximal inspiratory pressure values, the load being increased weekly. Associated with the IMT, subjects will participate in the rehabilitation program, when they will perform 7 sessions of physiotherapy per week, totaling 42 sessions, as well as 180 minutes per week of aerobic exercise, for six weeks.

Sham Group: This group will underwent exactly the same protocol but the participants will receive the threshold devices with the minimum resistance of the spring, which will be also concealed. The control group will also participate in the rehabilitation program and undergo the same procedures, except for the load adjustments.

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
change in functional gait perfomarnce
Délai: change from Baseline at 6 weeks
functional gait perfomarnce will be assessed by six minute walk test. (6MWT)
change from Baseline at 6 weeks

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
endurance muscular respiratory
Délai: Baseline and after 6 weeks
inspiratory and expiratory endurance will be assessed by the threshold devices, following previously described protocols.
Baseline and after 6 weeks
maximal respiratory pressures
Délai: Baseline, after 6 six weeks and three-monsth follow-ups
Maximal respiratory pressures will be assessed by a analogic manovacuometer, following previously described protocols.
Baseline, after 6 six weeks and three-monsth follow-ups
functional gait perfomarnce
Délai: three-monsth follow-ups
functional gait perfomarnce will be assessed by six minute walk test. (6MWT)
three-monsth follow-ups
activities of daily living
Délai: Baseline and after 6 weeks
activities of daily living: will be assessed by measure independence functional (MIF)
Baseline and after 6 weeks
Quality of life
Délai: Baseline, after 6 weeks and three-monsth follow-ups
Quality of life will be assessed by the Brazilian version of the EQ5D.
Baseline, after 6 weeks and three-monsth follow-ups

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Lorena de Oliveira Vaz Miranda

Les enquêteurs

  • Directeur d'études: Jamary Oliveira Filho, Federal University of Bahia

Publications et liens utiles

La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.

Publications générales

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

1 juin 2017

Achèvement primaire (Réel)

30 mars 2019

Achèvement de l'étude (Réel)

30 mars 2019

Dates d'inscription aux études

Première soumission

25 mai 2017

Première soumission répondant aux critères de contrôle qualité

26 mai 2017

Première publication (Réel)

31 mai 2017

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

6 avril 2020

Dernière mise à jour soumise répondant aux critères de contrôle qualité

3 avril 2020

Dernière vérification

1 avril 2020

Plus d'information

Termes liés à cette étude

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • 65028517.0.0000.0022

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

OUI

Description du régime IPD

The data collected in this study will be made available on this basis and will be published in a scientific journal. A master's dissertation will also be built. Further said reports will be provided to the ethics committee while conducting the study.

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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