Abstract
The quick motor function test (QMFT) is used to evaluate Pompe patients' motor function.
This study aims to evaluate the convergent validity and reliability of the cross-culturally
adapted Turkish version of QMFT in patients with Duchenne muscular dystrophy (DMD).
Twenty-eight patients diagnosed with DMD were included in the study. The QMFT was
translated and adapted to Turkish. The functionality of the patients was assessed
with the north star ambulatory assessment (NSAA) and the 6-minute walk test (6MWT);
muscle strength was evaluated with a hand-held dynamometer. There were two separate
practitioners on the first day of the QMFT study; it was applied a second time by
the first practitioner 14 days later. The mean age of DMD patients was 9.03 ± 3.39
(minimum 4–maximum 18 . Twenty-seven patients concluded all the necessary assessments.
Intrarater reliability of QMFT in patients with DMD was intraclass correlation coefficient
(ICC) = 0.98, and interrater reliability ICC = 0.98 was excellent. QMFT correlated
very well with 6MWT (r
s = 0.86; p < 0.001) and NSAA (r
s = 0.91; p < 0.001). Both the QMFT and NSAA show stronger correlations with proximal muscle
groups (convergent validity) than with distal muscle groups (divergent validity).
QMFT is a reliable and valid test for evaluating motor function in patients with DMD.
Keywords
Duchenne muscular dystrophy - motor function - reliability - validity
