Relação entre a capacidade funcional e percepção de limitação nas atividades cotidianas em indivíduos com doença pulmonar intersticial
Relationship between functional capacity and perceived limitations in activities of daily living in individuals with interstitial lung disease
Guilherme de Oliveira da Silva, Juliana Araújo, Gustavo Faustino Demétrio, Jessica Aline Ullmann Gutierrez, Tatiane Boff Centenaro, Manuela Karloh, Anamaria Fleig Mayer
Resumo
Introdução: A dispneia durante as atividades e a redução da capacidade funcional são comuns em indivíduos com doença pulmonar intersticial (DPI). Compreender essa relação é importante para caracterizar essa população. Objetivo: Investigar se a capacidade funcional e a dispneia ao esforço estão relacionadas e podem predizer limitações nas atividades de vida diária (AVD) decorrentes da dispneia em indivíduos com DPI. Métodos: Estudo transversal com 62 indivíduos com DPI (38 mulheres), idade de 60 ± 11 anos e capacidade vital forçada de 68,2 ± 21,3% do previsto. Foram avaliadas a função pulmonar por pletismografia, capacidade funcional pelo Teste de Caminhada de Seis Minutos (TC6), dispneia ao esforço pela escala de Borg Modificada e limitação nas AVD pela escala London Chest Activity of Daily Living (LCADL). Foram realizadas correlações e regressão linear simples, considerando desempenho no TC6 e dispneia ao esforço como variáveis independentes. Resultados: O LCADLtotal correlacionou-se com a distância no TC6 (r=−0,45), o TC6%previsto (r=−0,43) e a dispneia ao esforço (r=0,51). O LCADL%total correlacionou-se com a distância no TC6 (r=−0,49), o TC6%previsto (r=−0,48) e a dispneia ao esforço (r=0,56) (p<0,05 para todas). Nas regressões, o LCADLtotal foi explicado pela distância no TC6 (R2=0,23), pelo TC6%previsto (R2=0,22) e pela dispneia ao esforço (R2=0,28). O LCADL%total foi explicado pela distância no TC6 (R2=0,38), pelo TC6%previsto (R2=0,39) e pela dispneia ao esforço (R2=0,25) (p<0,001). Conclusão: Pior desempenho funcional e maior percepção de dispneia estiveram associados a maiores limitações nas AVD e foram capazes de predizer a variabilidade da LCADL.
Palavras-chave
Abstract
Background: Dyspnea during physical activities and reduced functional capacity are common in individuals with interstitial lung disease (ILD). Understanding this relationship is important for characterizing this population. Aim: To investigate whether functional capacity and exertional dyspnea are related to and can predict dyspnea-related limitations in activities of daily living (ADLs) in individuals with ILD. Methods: This cross-sectional study included 62 individuals with ILD (38 women), aged 60 ± 11 years, with a forced vital capacity of 68.2 ± 21.3% predicted. Pulmonary function was assessed by body plethysmography, functional capacity by the Six-Minute Walk Test (6MWT), exertional dyspnea by the Modified Borg Scale, and ADL limitation by the London Chest Activity of Daily Living (LCADL) scale. Correlation and simple linear regression analyses were performed, considering 6MWT performance and exertional dyspnea as independent variables. Results: The LCADL total score correlated with 6MWT distance (r=−0.45), 6MWT distance (% predicted) (r=−0.43), and exertional dyspnea (r=0.51). The LCADL total percentage score correlated with 6MWT distance (r=−0.49), 6MWT distance (% predicted) (r=−0.48), and exertional dyspnea (r=0.56) (p<0.05 for all). In the regression analyses, the LCADL total score was explained by 6MWT distance (R2=0.23), 6MWT distance (% predicted) (R2=0.22), and exertional dyspnea (R2=0.28). The LCADL total percentage score was explained by 6MWT distance (R2=0.38), 6MWT distance (%predicted) (R2=0.39), and exertional dyspnea (R2=0.25) (p<0.001). Conclusion: Poorer functional performance and greater perceived exertional dyspnea were associated with greater ADL limitations and were able to predict the variability in LCADL scores.
Keywords
Referências
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Submetido em:
17/12/2025
Aceito em:
27/07/2026
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