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Vol. 14. Issue 2.
Pages 177-194 (March - April 2008)
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Vol. 14. Issue 2.
Pages 177-194 (March - April 2008)
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Inspiratory muscle training in COPD patients
Treino de músculos inspiratórios em doentes com DPOC
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Susana Garcia1, Margarida Rocha2, Paula Pinto3, António M.F. Lopes4, Cristina Bárbara5
1 Fisioterapeuta da Unidade de Readaptação Funcional Respiratória do Hospital de Pulido Valente (HPV) / Physiotherapist, Respiratory Rehabilitation Unit, Hospital de Pulido Valente (HPV)
2 Técnica de cardiopneumologia da Unidade de Fisiopatologia Respiratória do HPV / Cardiopulmonology technician, Respiratory Physiopathology Unit, HPV
3 Mestre em Patologia Respiratória. Assistente Hospitalar do HPV. Assistente Convidada da Faculdade de Ciências Médicas de Lisboa (FCML). Investigadora do Centro de Estudos de Patologia Respiratória da FCML / MA in Respiratory Pathology. Consultant, HPV. Guest Consultant, Lisbon School of Medical Sciences (FCML). Researcher, FCML Centre for Respiratory Pathology Studies
4 Mestre em Fisioterapia. Professor Auxiliar Convidado da Escola Superior de Saúde do Alcoitão / MA in Physiotherapy. Guest Assistant Professor, Alcoitão Escola Superior de Saúde
5 Coordenadora da Unidade de Fisiopatologia Respiratória do HPV. Assistente Hospitalar Graduada do HPV. Professora Auxiliar Convidada da FCML. Investigadora do Centro de Estudos de Patologia Respiratória da FCML / Head, Respiratory Physiopathology Unit, HPV. Specialist Consultant, HPV. Guest Assistant Professor, FCML. Researcher, FCML Centre for Respiratory Pathology Studies
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Abstract
Aim

The aim of this study was to evaluate the impact a specific inspiratory muscle training (IMT) protocol had on dyspnoea, lung function, respiratory muscle pressure, tolerance to exercise and quality of life in a group of patients with ch ronic obstructive pulmonary disease (COPD).

Population

We studied 13 patients with moderate to very severe COPD divided into a control group (n=5) with an average FEV1 43.9±10.1% of predicted value and an IMT group (n=8) with FEV1 57.8±12.1% of predicted value. While this study group underwent IMT for five consecutive weeks, the control group did not undergo any kind of training.

Results

Using a specific IMT protocol significantly improved maximal inspiratory pressure (MIP) in the study group (initial MIP – 83.3±21.4 versus final MIP- 98.4±17.8 cmH2O; p<0.01). The same result was seen with the St. George Respiratory Question-naire (SGRQ) score in the study group (initial score 58±2.2 versus final score 50±2.1; p<0.05). No changes were recorded in the variables studied in the control group.

Conclusions

The use of IMT in patients with moderate to very severe COPD induced an improvement in inspiratory muscle force with a consequent improvement in the quality of life in relation to symptoms.

Key-words:
COPD
IMT
Resumo
Objectivo

Pretendemos investigar os efeitos de um protocolo específico de treino dos músculos inspiratórios (TMI) no comportamento da dispneia, da função pulmonar, da força dos músculos respiratórios, da tolerância ao exercício e da qualidade de vida, num grupo de doentes com doença pulmonar obstrutiva crónica (DPOC).

Amostra

Constituída por treze doentes com DPOC moderada a muito grave distribuídos por um grupo de controlo (n=5) com um valor médio de FEV1 de 43,9±10,1% do valor teórico e um grupo experimental (n=8) com um valor médio de FEV1 de 57,8±± 12,1% do valor teórico.

O grupo experimental foi sujeito a TMI por cinco semanas consecutivas e o grupo de controlo não efectuou qualquer tipo de treino, sendo apenas aconselhado a continuar com as actividades diárias até então praticadas.

Resultados

A aplicação do protocolo específico de TMI melhorou significativamente a pressão máxima inspiratória (PImax) no grupo experimental (Pimax inicial - 83,3±21,4 versus Pimax final-98,4±17,8 cmH2O; p<0,01). O mesmo aconteceu com o score de sintomas do St. George Respiratory Questionnaire (SGRQ) no grupo experimental (score inicial 58±2,2 versus score final 50±2,1; p<0,05), não se tendo verificado qualquer alteração nas variáveis avaliadas no grupo de controlo.

Conclusões

A aplicação do treino de músculos inspiratórios em doentes com DPOC moderada a muito grave induziu melhoria da força dos músculos inspiratórios com repercussão na melhoria da qualidade de vida no que diz respeito aos sintomas.

Palavras-chave:
DPOC
TMI
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