Reachable workspace and performance of upper limb (PUL) in duchenne muscular dystrophy.
BACKGROUND
The Kinect-based reachable workspace relative surface area (RSA) is compared with the performance of upper limb (PUL) assessment in Duchenne muscular dystrophy (DMD).


METHODS
29 individuals with DMD (ages: 7-23; Brooke: 1-5) underwent both Kinect-based reachable workspace RSA and PUL assessments. RSAs were also collected from 24 age-matched controls. Total and quadrant RSAs were compared with the PUL total, shoulder-, middle-, and distal-dimension scores.


RESULTS
The total reachable workspace RSA correlated well with the total PUL score (Spearman ρ = -0.602; P < 0.001), and with each of the PUL dimensional scores: shoulder (ρ = -0.624; P < 0.001), middle (ρ = -0.564; P = 0.001), and distal (ρ = -0.630; P < 0.001). With quadrant RSA, reachability in a particular quadrant was closely associated with respective PUL dimensional-level function (lateral-upper quadrant for shoulder-, lateral-upper/lower quadrants for middle-, and lateral-lower quadrant for distal-level function).


CONCLUSIONS
This study demonstrates concurrent validity of the reachable workspace outcome measure (RSA) with the DMD-specific upper extremity outcome measure (PUL).
University of California at Davis School of Medicine, Department of Physical Medicine and Rehabilitation, 4860 Y Street, Suite 3850, Sacramento, California, USA, 95817.
Jay J
JJ
Han
University of California at Davis School of Medicine, Department of Public Health Sciences, Davis, California, USA.
Evan
E
de Bie
University of California at Davis School of Medicine, Department of Physical Medicine and Rehabilitation, 4860 Y Street, Suite 3850, Sacramento, California, USA, 95817.
Alina
A
Nicorici
University of California at Davis School of Medicine, Department of Physical Medicine and Rehabilitation, 4860 Y Street, Suite 3850, Sacramento, California, USA, 95817.
Richard T
RT
Abresch
University of California at Davis School of Medicine, Department of Physical Medicine and Rehabilitation, 4860 Y Street, Suite 3850, Sacramento, California, USA, 95817.
Colleen
C
Anthonisen
University of California at Berkeley College of Engineering, Department of Electrical Engineering and Computer Science, Berkeley, California, USA.
Ruzena
R
Bajcsy
University of California at Davis School of Medicine, Department of Physical Medicine and Rehabilitation, 4860 Y Street, Suite 3850, Sacramento, California, USA, 95817.|University of California at Berkeley College of Engineering, Department of Electrical Engineering and Computer Science, Berkeley, California, USA.
Gregorij
G
Kurillo
University of California at Davis School of Medicine, Department of Physical Medicine and Rehabilitation, 4860 Y Street, Suite 3850, Sacramento, California, USA, 95817.
Craig M
CM
Mcdonald
D000293:Adolescent; D002648:Child; D015331:Cohort Studies; D006801:Humans; D008297:Male; D009068:Movement / Q000502:physiology; D020388:Muscular Dystrophy, Duchenne / Q000175:diagnosis / Q000503:physiopathology* / Q000523:psychology; D010775:Photic Stimulation / Q000379:methods; D011597:Psychomotor Performance / Q000502:physiology*; D016059:Range of Motion, Articular / Q000502:physiology; D058998:Remote Sensing Technology / Q000379:methods*; D034941:Upper Extremity / Q000503:physiopathology*; D055815:Young Adult
DMD; PUL; kinect; reachable workspace; upper extremity