Objective: To correlate the respiratory muscle strength and functional capacity in patients with CF. Method: Cross-sectional study in adults with cystic fibrosis. Sampling data were cataloged in Microsoft Office Excel 2007 and the variables analyzed by SPSS version 20.0 using the Student t test and the Spearman coefficient. The level of significance adopted was p < 0.05. Results: We assessed 35 patients with cystic fibrosis (44.6 ± 19.0 years), the great majority of patients in FC (n=22) did not present weakness of the inspiratory muscles (MIP-90,7 ± 27.4 cmH2O). It was not found statistically significant differences only between the adult and elderly patients. There was a positive correlation between MIP and MEP and a six-minute walk test (6MWT) in participants with respiratory muscle weakness and in the elderly. There was statistically significant difference between the averages of the distance covered on the 6MWT and the maximal respiratory pressures with the average of what was envisaged for these variables. Conclusion: All groups presented limitation of respiratory strength and functional capacity. The correlations between the respiratory pressures with the 6MWT were low and small in adults and individuals without respiratory muscle weakness; moderate to high in the elderly; small to moderate in women; small and negative in men; and high in patients with respiratory muscle weakness.

Objective: To correlate the respiratory muscle strength and functional capacity in patients with CF. Method: Cross-sectional study in adults with cystic fibrosis. Sampling data were cataloged in Microsoft Office Excel 2007 and the variables analyzed by SPSS version 20.0 using the Student t test and the Spearman coefficient. The level of significance adopted was p < 0.05. Results: We assessed 35 patients with cystic fibrosis (44.6 ± 19.0 years), the great majority of patients in FC (n=22) did not present weakness of the inspiratory muscles (MIP -90,7 ± 27.4 cmH2O). It was not found statistically significant differences only between the adult and elderly patients. There was a positive correlation between MIP and MEP and a six-minute walk test (6MWT) in participants with respiratory muscle weakness and in the elderly. There was statistically significant difference between the averages of the distance covered on the 6MWT and the maximal respiratory pressures with the average of what was envisaged for these variables. Conclusion: All groups presented limitation of respiratory strength and functional capacity. The correlations between the respiratory pressures with the 6MWT were low and small in adults and individuals without respiratory muscle weakness; moderate to high in the elderly; small to moderate in women; small and negative in men; and high in patients with respiratory muscle weakness.

RESUMO Comparou-se a força muscular respiratória, qualidade de vida e capacidade funcional em adolescentes com fibrose cística com diferentes perfis bacteriológicos. Trata-se de um estudo transversal de caráter descritivo, em adolescentes com fibrose cística avaliados no Centro de Referência em Fibrose Cística do Hospital Especializado Octávio Mangabeira (HEOM) no período de janeiro a março de 2016, caracterizando uma amostra por conveniência. Foi realizada avaliação da força muscular com o manovacuômetro, análise da qualidade de vida por meio da aplicação do questionário de qualidade de vida com validação para pacientes com fibrose cística (QFC), análise da capacidade funcional, após a realização do teste de caminhada de seis minutos, e do perfil bacteriológico, por intermédio de resultados de exames de microbiologia. Foram avaliados 30 indivíduos com fibrose cística, em que, para Staphylococcus aureus, verificaram-se a força muscular respiratória (75,6±19,6*), a qualidade de vida QFC (59,3±3,4) e a capacidade funcional (427,8±64,6*). Para Pseudomonas aeruginosa foram analisadas a força muscular respiratória (61,4±19,1*), a qualidade de vida QFC (47,9±4,2) e a capacidade funcional (382,0±78,0*). Concluiu-se que ambos os perfis bacteriológicos comprometem a função pulmonar com ênfase para a bactéria Pseudomonas aeruginosa, que apresenta tendência à fraqueza muscular respiratória, principalmente para o sexo feminino (PImáx<60cmH2O) e baixa capacidade funcional.