Relação entre função pulmonar e as propriedades musculares em pacientes com doença pulmonar obstrutiva crônica

Objetivo: Determinar as interrelacoes entre funcao pulmonar e os atributos massa e forca muscular em pacientes com doenca pulmonar obstrutiva cronica (DPOC). Metodo: 22 pacientes com DPOC foram submetidos a avaliacao espirometrica, a composicao corporal por bioimpedância eletrica e de forca muscular do quadriceps femoral pela analise da contracao voluntaria maxima (CVM). Para testar as relacoes entre os indicadores volume expiratorio forcado em um segundo (VEF1), massa magra (MM) e CVM foram realizadas correlacoes de Pearson. Resultados: Houve relacoes significantes entre o VEF1 e a MM (r=0,48;p=0,02), VEF1 e a CVM (r=0,45; p=0,05), assim como a MM e a CVM (r=0,67;p=0,002). Conclusao: Os resultados desse estudo demonstram que em pacientes com DPOC estaveis de grau moderado, o disturbio ventilatorio obstrutivo, evidenciado pelo indicador espirometrico VEF1, relacionou-se com os atributos de massa e forca muscular periferica, e o declinio da forca foi proporcional a massa muscular remanescente. Objective: To determine the interrelationships between lung function and attributes mass and muscle strength in patients with chronic obstructive pulmonary disease (COPD). Method: 22 patients with COPD underwent spirometry evaluation, body composition by bioelectrical impedance and strength of the quadriceps muscle by the analysis of maximal voluntary contraction (MVC). To test the relationships between indicators forced expiratory volume in one second (FEV1), lean mass (LM) and CVM Pearson correlations were performed. Results: There were significant relationships between FEV1 and MM (r = 0.48, p = 0.02), FEV1 and MVC (r = 0.45, p = 0.05), as well as MM and MVC (r = 0.67, p = 0.002). Conclusion: The results of this study demonstrate that in patients with stable moderate COPD, obstructive respiratory disorder, evidenced by spirometric indicator FEV1 was related to the attributes of mass and peripheral muscle strength, and the decline of force was proportional to muscle mass remaining.