Validity and reliability of the Glittre-ADL test in individuals with idiopathic pulmonary fibrosis

ABSTRACT

Background

Patients with idiopathic pulmonary fibrosis (IPF) often present with dyspnea, fatigue, and desaturation. These symptoms can be highly limiting, as they lead to a decrease in performing activities of daily living (ADL). Therefore, it is essential to evaluate the degree of functional limitation of these individuals.

Objective

The present study aimed to evaluate the validity and reliability of the Glittre-ADL test (TGlittre) and its association with self-reported limitation in ADL and health-related quality of life (HRQoL) in patients with IPF.

Methods

Twenty-seven individuals with IPF (60.5 ± 10.6 years), with forced vital capacity 2.26 ± 1.03 L (51.09 ± 20.62% of predicted) were assessed for the time spent in TGlittre, 6-minute walking distance (6MWD), limitation in ADL and HRQoL.

Results

TGlittre was reliable (intraclass correlation coefficient_3,1 = 0.96; P < .001); however, a learning effect of 10.6% was observed between the first and second execution of TGlittre. The time spent in TGlittre correlated with 6MWD, limitation in ADL, and disease-specific HRQoL (P < .05).

Conclusion

TGlittre is valid and reliable for assessing functional capacity in patients with IPF. Still, it presents a learning effect and should be performed twice when assessing functional capacity in clinical practice.

KEYWORDS:

• Activities of daily living
• dyspnea
• exercise test
• interstitial lung disease
• physical fitness

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The author(s) reported there is no funding associated with the work featured in this article.