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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

On the functional integration between postural and supra-postural tasks on the basis of contextual cues and task constraint

Texto completo
Autor(es):
de Lima, Andrea Cristina [1] ; de Azevedo Neto, Raymundo Machado [1] ; Teixeira, Luis Augusto [1]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Human Motor Syst Lab, Sch Phys Educ & Sport, BR-05508030 Sao Paulo - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: GAIT & POSTURE; v. 32, n. 4, p. 615-618, OCT 2010.
Citações Web of Science: 16
Resumo

In order to evaluate the effects of uncertainty about direction of mechanical perturbation and supra-postural task constraint on postural control young adults had their upright stance perturbed while holding a tray in a horizontal position Stance was perturbed by moving forward or backward a supporting platform contrasting situations of certainty versus uncertainty of direction of displacement Increased constraint on postural stability was Imposed by a supra-postural task of equilibrating a cylinder on the tray Performance was assessed through EMG of anterior leg muscles angular displacement of the main Joints involved in the postural reactions and displacement of the tray Results showed that both certainty on the direction of perturbation and Increased supra-postural task constraint led to decreased angular displacement of the knee and the hip Furthermore combination of certainty and high supra-postural task constraint produced shorter latency of muscular activation Such postural responses were paralleled by decreased displacement of the tray Thesi results suggest a functional integration between the tasks with central set priming reactive postural responses from contextual cues and Increased stability demand (C) 2010 Elsevier B V All rights reserved (AU)

Processo FAPESP: 06/05213-9 - Prioridade do controle postural durante tarefa manual e recuperação do equilíbrio
Beneficiário:Andréa Cristina de Lima Pardini
Linha de fomento: Bolsas no Brasil - Mestrado