Reliability, Responsiveness, and Validity of the Visual Analog Fatigue Scale to Measure Exertion Fatigue in People with Chronic Stroke: A Preliminary Study

Table 2

The intraclass correlation coefficient of measures on 2 separate visits $(n=21)$.

	Visit 1	Visit 2	ICC
${\text{VAFS}}_{\text{at rest}}$	$7.2\pm 4.3$	$8.3\pm 4.5$	0.851
${\text{VAFS}}_{\text{post exercise}}$	$69.4\pm 30.5$	$65.8\pm 31.9$	0.846
${\text{VAFS}}_{\text{post recovery}}$	$48.5\pm 25.4$	$47.5\pm 26.9$	0.888
EF	$62.4\pm 29.3$	$57.5\pm 30.9$	0.829
RR (%)	$37.0\pm 17.3$	$37.7\pm 15.9$	0.893

VAFS: Visual Analog Fatigue Scale.
EF: Exertion Fatigue (EF =VAFS_{post exercise}−VAFS_{at rest}).
RR: Recovery Rate (RR = VAFS_{post exercise}− VAFS_{post recovery})/(VAFS_{post exercise}−VAFS_{at rest}) $\times$ 100.
ICC: Intraclass correlation coefficient, model (3,1).