A ancoragem funcional através do manejo de cão em tarefas de equilíbrio
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Data
2011-07-29
Autores
Melo, Janaina Aparecida Carneiro de [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
O objetivo deste trabalho é avaliar, ao longo de uma caminhada, a contribuição do sistema háptico durante a condução de um cão em condições de desafios ao sistema postural. Os desafios nas tarefas deste estudo incluem restrição da base de suporte para a marcha e privação visual. Esperamos que a sincronização entre condutor e cão se reflita em melhores níveis de desempenho no controle da marcha, especialmente na condição onde a visão é obstruída. Para este estudo foram recrutados 10 adultos jovens, com idade de média de 23,7 ± 4,32 anos e um cão treinado em obediência básica e na tarefa de condução em superfície restrita de apoio (traves de equilíbrio). As condições de tarefas foram: com e sem restrição da visão (CVSC e SVSC, respectivamente), e com e sem condução do cão (CVCC e SVCC, respectivamente). A primeira condição foi sempre a condição controle (olhos abertos sem condução do cão). Cada tentativa foi repetida três vezes. As tarefas foram filmadas por duas câmeras com o objetivo de avaliar a duração de cada ciclo do andar. Uma ANOVA three-way com medidas repetidas em todos os fatores (visão, tarefa e repetições) foi realizada para as variáveis: duração do ciclo de cada passada, média da fase relativa e o desvio da fase relativa, com medidas também repetitivas em todos os fatores para: visão, tarefa, pernas, e repetições. Testes a posteriori de Bonferroni foram calculados para comparações aos pares. Em relação à média da fase relativa as tarefas executadas com o cão foi significativamente superior àquelas sem o uso do cão. O pior relacionamento temporal foi mantido nas médias...
The purpose of this study was to assess the contribution of the haptic system during walking with a dog on challenging tasks to the postural system. The challenges included restriction to the base support (walking on a balance beam for both, the human and the dog), and visual occlusion (for the human only). We expected that the synchronization between the walking individual and the dog reflected in improved levels of performance in motion control, especially in conditions where vision is occluded. We recruited 10 young adults with average age of 23.7 ± 4.32 years and a dog with obedience training and conditioned to walk on a restricted area of support (balance beam). The task conditions were: with and without vision (CVSC and SVSC, respectively), and with and without conducting the dog (CVCC and SVCC, respectively). The first condition was always the control condition (eyes open without conducting the dog). Each trial was repeated three times. The tasks were videotaped with two cameras in order to process the duration of each stepping cycle. A three-way ANOVA with repeated measures on all factors (vision, and task repetitions) was performed for the variables: duration of each stepping cycle, relative phase and standard deviation of the relative phase, also with repeated measures on all of the factors: vision, task conditions, legs, and trials. The mean relative phase of the tasks performed with the dog was significantly closer to symmetry than those without the use of the dog. The worst temporal relationship was maintained during the condition SVSC (right leg = 0,477 ± 0,030, left leg = 0,544 ± 0,035). However... (Complete abstract click electronic access below)
The purpose of this study was to assess the contribution of the haptic system during walking with a dog on challenging tasks to the postural system. The challenges included restriction to the base support (walking on a balance beam for both, the human and the dog), and visual occlusion (for the human only). We expected that the synchronization between the walking individual and the dog reflected in improved levels of performance in motion control, especially in conditions where vision is occluded. We recruited 10 young adults with average age of 23.7 ± 4.32 years and a dog with obedience training and conditioned to walk on a restricted area of support (balance beam). The task conditions were: with and without vision (CVSC and SVSC, respectively), and with and without conducting the dog (CVCC and SVCC, respectively). The first condition was always the control condition (eyes open without conducting the dog). Each trial was repeated three times. The tasks were videotaped with two cameras in order to process the duration of each stepping cycle. A three-way ANOVA with repeated measures on all factors (vision, and task repetitions) was performed for the variables: duration of each stepping cycle, relative phase and standard deviation of the relative phase, also with repeated measures on all of the factors: vision, task conditions, legs, and trials. The mean relative phase of the tasks performed with the dog was significantly closer to symmetry than those without the use of the dog. The worst temporal relationship was maintained during the condition SVSC (right leg = 0,477 ± 0,030, left leg = 0,544 ± 0,035). However... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Capacidade motora, Locomoção humana, Sistema âncora, Sistemas dinâmicos, Sistema háptico, Anchor system, Dynamical systems, Locomotion, Haptic system
Como citar
MELO, Janaina Aparecida Carneiro de. A ancoragem funcional através do manejo de cão em tarefas de equilíbrio. 2011. 57 f. Dissertação - (mestrado) - Universidade Estadual Paulista, Instituto de Biociências de Rio Claro, 2011.