(Stroke. 2001;32:1635.)
© 2001 American Heart Association, Inc.
Original Contributions |
Assessing Wolf Motor Function Test as Outcome Measure for Research in Patients After Stroke
From the Division of Physical Therapy, Department of Rehabilitation Medicine, Emory University School of Medicine, Atlanta, Ga.
Correspondence to Dr Steven L. Wolf, Emory University School of Medicine, Center for Rehabilitation Medicine, 1441 Clifton Road NE, Atlanta, GA 30322. E-mail swolf{at}emory.edu
Background and Purpose—The Wolf Motor Function Test (WMFT) is a new time-based method to evaluate upper extremity performance while providing insight into joint-specific and total limb movements. This study addresses selected psychometric attributes of the WMFT applied to a chronic stroke population.
Methods—Nineteen individuals after stroke and with intact cognition and sitting balance were age- and sex-matched with 19 individuals without impairment. Subjects performed the WMFT and the upper extremity portion of the Fugl-Meyer Motor Assessment (FMA) on 2 occasions (12 to 16 days apart), with scoring performed independently by 2 random raters.
Results—The WMFT and FMA demonstrated agreement
(P<0.0001) between raters at
each session. WMFT scores for the dominant and nondominant extremities
of individuals without impairment were different
(P
0.05) from the more and
less affected extremities of subjects after stroke. The FMA score for
the more affected extremity of subjects after stroke was different
(P0.05) from the dominant and
nondominant extremities. However, the FMA score for the less affected
upper extremity of individuals after stroke was not different
(P>0.05) from the dominant and
nondominant extremities of individuals without impairment. The WMFT and
FMA scores were related (P<0.02) for the more affected
extremity in individuals after stroke.
Conclusions—The interrater reliability, construct validity, and criterion validity of the WMFT, as used in these subject samples, are supported.
Key Words: arm • motor activity • psychometrics • stroke
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