A note on motor skill acquisition in mild and moderate Down syndrome individuals

Springer Science and Business Media LLC - Tập 30 - Trang 1-9 - 2017
Roberto Gimenez1, Marcelo Luis Marquezi1, Ernani Xavier Filho2, Edison de J. Manoel3
1UNICID - Grupo de Estudos sobre o Comportamento Motor e Intervenção Motora, Tatuapé, Brazil
2UEL - Londrina, Londrina, Brazil
3USP - Grupo de Estudo do Desenvolvimento da Ação e Intervenção Motora, Butantã, Brazil

Tóm tắt

This study investigated the acquisition of a serial motor skill in individuals with Down syndrome with two levels of handicap, mild group (mean age = 14.5 years, SD = 2.3, 7 individuals) and moderate group (mean age = 15.2 years, SD = 3.2, 7 individuals). The task involved single-arm sequential movements to five. The measures to access performance were overall sequence error, reaction time, and total movement time. To evaluate action program, formation variability of sequencing and relative timing variability were considered. Although there was no clear practice effect, the results showed that the level of handicap led to different strategies to plan and control the actions. The moderate group presented a less stable action program expressed in the variability in sequencing and timing. Their longer reaction times also suggest a heavy demand on central processing in accord with the one-target advantage hypothesis and also due to memory deficits to select and plan movements.

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