Grip and load force control and coordination in object manipulation during a night of sleep deprivation

Autor(es)

Pedao, Sabrina Tiago ^[1] ; Aguiar, Stefane Aline ^[1] ; Cunha, Bianca Pinto ^[1] ; de Freitas, Paulo Barbosa ^[1]

Afiliação do(s) autor(es)

^[1] Univ Cruzeiro Sul, Inst Phys Act & Sport Sci, Grad Program Human Movement Sci, BR-01506000 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SLEEP AND BIOLOGICAL RHYTHMS; v. 13, n. 2, p. 163-171, APR 2015.
• Citações Web of Science: 2

Resumo

Although sleep deprivation causes deficits in the performance of several sensorimotor tasks, its effects on object manipulation are underexplored. To investigate the possible effects of sleep deprivation on the control of object manipulation we assessed the relationship between the force components acting on the digits-object interaction (i.e. grip force {[}GF] and load force {[}LF]) during two simple manipulation tasks. Sixteen young adults performed two manipulation tasks five times along one night of sleep deprivation, at 23:00, 01:00, 03:00, 05:00, and 07:00h. In the first task (i.e. holding), participants were asked to hold an instrumented object, as still as possible, during 12s. In the second task (i.e. shaking), they were instructed to continuously oscillate the object upward and downward at two frequencies, 0.8Hz and 1.2Hz. The results revealed that individuals who remained sleep deprived decreased linearly the amount of GF exerted while holding the object still as the night progressed. Also, results revealed that during the shaking task the GF-LF coordination and GF control were negatively affected at 03:00. These results indicate that during the holding task GF control is strongly affected by time awake and that during the shaking, a dynamic task, circadian variations play a major role. These changes could be detrimental to work-related manipulation tasks. (AU)

• Processo FAPESP: 10/02939-4 - A função manual em pacientes diabéticos neuropatas: controle e coordenação de forças que agem na interação dedos-objeto em tarefas manipulativas
• Beneficiário: Paulo Barbosa de Freitas Júnior
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/24426-4 - Função manual de indivíduos pós acidente vascular encefálico: efeito do lado da lesão
• Beneficiário: Bianca Pinto Cunha
• Linha de fomento: Bolsas no Brasil - Doutorado
• Processo FAPESP: 11/16016-8 - Efeito da privação do sono no acoplamento sensório-motor em adultos
• Beneficiário: Stefane Aline Aguiar
• Linha de fomento: Bolsas no Brasil - Mestrado