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    To adapt the Reaching Performance Scale for Stroke (RPSS) for the Wolf Motor Function Test (WMFT) "Lift Can" (Can) and "Hand to Box" (Box) items. Retrospective analysis of video-recorded WMFT assessment performed by 3 raters on 2 occasions. Not applicable. Participants (N=29) with mild to moderate upper extremity impairment less than 3 months after stroke. Not applicable. Inter- and intra-rater agreement, concurrent validity of WMFT-RPSS. Mean ± SD inter-rater Gwet's agreement coefficient (AC2) was 0.61±0.05 for Can WMFT-RPSS and 0.56 (0.03) for Box. Mean ± SD intra-rater AC2 for Can was 0.63±0.05 and 0.70±0.04 for Box. WMFT-RPSS Can and Box scores correlated with log mean WMFT time (C, -0.73; B, -0.48), Functional Ability Scale (C, 0.87; B, 0.62), Upper Extremity Fugl-Meyer Motor Score (C, 0.69; B, 0.51), and item movement rate (C, 0.74; B, 0.71) (P<.05 for all). Mean ± SD WMFT-RPSS score across the 29 participants was 12.7±3.5 for Can (max score, 19) and 11.4±3.0 for Box (max score, 16). WMFT-RPSS demonstrated moderate intra-rater and weak-to-moderate inter-rater agreement for individuals with mild-moderate impairment. For construct validity, Can and Box WMFT-RPSS were significantly correlated with 4 standardized measures. Average WMFT-RPSS scores revealed that some participants may have relied on compensatory movements to complete the task, a revelation not discernable from movement rate alone. The WMFT-RPSS is potentially useful as a valid and reliable tool to examine longitudinal changes in movement quality after stroke. Copyright © 2020 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.


    Clarisa Martinez, Helen Bacon, Veronica Rowe, David Russak, Erin Fitzgerald, Michelle Woodbury, Steven L Wolf, Carolee Winstein. A Reaching Performance Scale for 2 Wolf Motor Function Test Items. Archives of physical medicine and rehabilitation. 2020 Nov;101(11):2015-2026

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    PMID: 32433993

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