Journal
MOTOR CONTROL
Volume 8, Issue 4, Pages 472-483Publisher
HUMAN KINETICS PUBL INC
DOI: 10.1123/mcj.8.4.472
Keywords
movement smoothness; scattershot algorithm; robotic therapy; ballistic movement
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Funding
- NICHD NIH HHS [R01-HD37397, R01-HD36827, R01 HD045343] Funding Source: Medline
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Submovements are hypothesized building blocks of human movement, discrete ballistic movements of which more complex movements are composed. Using a novel algorithm, submovements were extracted from the point-to-point movements of 41 persons recovering from stroke. Analysis of the extracted submovements showed that, over the course of therapy, patients' submovements tended to increase in peak speed and duration. The number of submovements employed to produce a given movement decreased. The time between the peaks of adjacent submovements decreased for inpatients (those less than 1 month post-stroke), but not for outpatients (those greater than 12 months post-stroke) as a group. Submovements became more overlapped for all patients, but more markedly for inpatients. The strength and consistency with which it quantified patients' recovery indicates that analysis of submovement overlap might be a useful tool for measuring learning or other changes in motor behavior in future human movement studies.
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