知的障害者の手指反復運動における時間・空間的側面の精度と一貫性

概要

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This study was undertaken to investigate temporal and spatial accuracy and consistency of manual rhythmic movement along a lateral direction of people with intellectual developmental disability (IDD). Subjects were 11 adults with mild or moderate IDD, 7 with severe or profoundly IDD, and 19 without any such disability (controls). Subjects moved their dominant arm repeatedly along a lateral direction (30cm) at 0.5Hz, 1Hz, 2Hz, and 3Hz. Scores of accuracy and consistency of rhythmic movement were calculated. Although the subjects without disability (controls) and with mild or moderate IDD showed temporal accuracy, subjects with severe or profoundly IDD showed no such tendency, except at 1Hz. The adults without disabilities (controls) and with mild or moderate IDD showed spatial accuracy at lower frequencies, but subjects with severe or profoundly IDD showed no such tendency. Regarding the rhythmic consistency of movement, a difference between the IDD types was clear for temporal variation, but not for spatial variation. The factors of frequency, the differences of accuracy and consistency, temporal and spatial variability, and the IDD types were discussed.
2010-06-30