Reliability and validity of the Glittre-ADL test to assess thefunctional status of patients with interstitial lung disease

摘要

The study objective was to investigated the reliability and validity of theADL-Glittre test (TGlittre) to assess the functional status of patients withinterstitial lung disease (ILD). Twenty-one individuals with ILD participated(age: 63 ± 11 years; DLCO: 51.0 ± 12.6%predicted), evaluated with bodyplethysmography, Saint George Respiratory Questionnaire, modified MedicalResearch Council dyspnea scale, six-minute walk test (6MWT) and monitoring ofphysical activity of daily living. Two TGlittre were performed, with an intervalof 30 minutes between them. The TGlittre demonstrated high test-retestreliability, with an intraclass correlation coefficient of 0.90 (95%CI:0.75–0.96; p < 0.001). Nineteen patients (90.5%) performed better on thesecond test (mean difference between TGlittre 1 and 2: −0.57 ± 0.96 minute; p =0.001), with a learning effect of 11.6%. The time in TGlittre correlated with6MWT (r = −0.70; p = 0.002) and with the total energy expenditure in physicalactivity of daily living (r = −0.52; p = 0.02). In %predicted, TGlittre and 6MWTalso correlated (r = −0.50; p = 0.04). Correlations were observed betweenTGlittre and pulmonary function variables (r = −0.47 to −0.57; p = 0.01 to p =0.04). There was no difference in the physiological response between TGlittre 1and 2, and between TGlittre and 6MWT (p > 0.05). In conclusion, the TGlittreis reliable and valid for assessing functional status of patients with ILD.