The aim of this study was to investigate whether there is a correlation between functional capacity and the perception of limitation for activities of daily living (ADL) in patients with chronic obstructive pulmonary disease (COPD). Thirty patients underwent anthropometric assessment, spirometry, the London Chest Activity of Daily Living Scale (LCADL), the six minute walk test (6mWT) and the Glittre-ALD test (TGlittre). The normality of the data was tested using the Shapiro-Wilk test. To verify correlation between variables, the Spearman correlation coefficient was used. A simple linear regression and stepwise multiple linear regression were applied, using the percentage of LCADL (LCADL%total) as dependent variable and the tests (TGlittre and 6mWT) as independents. The TGlittre correlated moderately with LCADL%total (r=0.58, p<0.05) and with the LCADL domain "self care" (r=0.45, p<0.05) and "leisure" (r=0.54, p<0.05). The LCADL%total and its domain "leisure" showed moderate and weak negative correlation with the 6mWT (r=-0.45 and r=-0.53, p<0.05, respectively), while the "self care" domain did not correlate with 6mWT. The variability of the TGlittre was able to explain 44% of the variability of the LCADL%total (p<0.01), while 6mWT explained only 17% of the LCADL%total (p<0.05). In the multiple linear regression model, only the TGlittre was selected as LCADL%total predictor (R²=0.44; p<0.01). Therefore, both the 6MWT and TGlittre reflect ADL limitations perceived and reported by patients with COPD. However, TGlittre seems to be more sensitive to reflect the self-perception of functional impairment in those patients.
Pulmomary Disease; Chronic Obstructive; Activities of Daily Living; Outcome Assessment (Health Care)
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