Influência do transporte de cargas na biomecânica do apoio plantar durante o caminhar de mulheres pós-menopáusicas
Ficheiros
Data
2010
Autores
Título da revista
ISSN da revista
Título do Volume
Editora
Resumo
A redução estrogénica com a menopausa está associada a um conjunto de alterações biológicas na mulher, susceptíveis de influenciarem a sua locomoção bípede. O transporte manual de cargas externas durante o caminhar, é uma tarefa comum no quotidiano das mulheres nesta fase do climatério. O objectivo geral do estudo, foi a análise da influência do transporte manual de cargas, no comportamento de parâmetros temporais e dinâmicos da pressão plantar do caminhar de um grupo de mulheres com amenorreia permanente (n=7, 57,25± 4.80 anos). Utilizando células fotoeléctricas (Brower Timing Systems SpeedTrap 2, 1998), e a plataforma de pressão plantar footscan (RsScan International, 1m × 0.4m, 8192 sensors, 253 Hz), foram obtidos e analisadas dados sobre parâmetros espácio-temporais e da pressão, provenientes do apoio plantar realizado durante o caminhar, com e sem o transporte manual e simétrico de carga externa com 5, 10 e 15% do peso corporal. Foram obtidos e analisados os valores médios e desvio padrão por tarefa, e testou-se a normalidade da distribuição de dados através do teste Kolmogorof - Smirnof. Foi utilizada uma Anova Factorial B.W. para as variáveis cuja amostragem era normal, e para testar as variáveis cuja amostragem não era normal, utilizámos o teste não paramétrico Kruskal-Wallis. O intervalo de confiança foi definido em 95%. Em todos os parâmetros considerados, não foram detectadas quaisquer diferenças estatisticamente significativas entre as tarefas estudadas. Os resultados sugerem, que o transporte manual e simétrico de cargas externas até 15% do peso corporal não gera alterações significativas no comportamento espácio-temporal e da pressão plantar em mulheres pós-menopáusicas. A confirmação desta situação requer, contudo, a utilização de uma amostra mais representativa, e o implementar de um protocolo com cargas acrescidas mais intensas.
The estrogenic reduction caused by the menopause is associated to a set of biologic changes on the woman, susceptible of influencing her bipedal locomotion. The manual carrying of external loads during walking is a common task in women everyday at this climatéric phase. The general aim of the study was the analysis the influence of the manual carrying of loads on the behaviour of spatial-temporal parameters, and of the plantar pressure during walking of a group of women with permanent menorrhea (n=7, 57,25± 4.80 years). Using photoelectric cells (Brower Timing Systems SpeedTrap 2, 1998), and the platform of plantar pressure footscan (RsScan International, 1m × 0.4m, 8192 sensors, 253 Hz), were obtained and analysed data on spatial-temporal parameters, and of the plantar pressure, deriving from the plantar support performed during walking, with and without the manual and symmetrical carrying of external load with 5, 10 and 15 % of the body weight. The average values and standard deviation were obtained and analysed by task, and was tested the normality of the data distribution through the Kolmogorof – Smirnof test. It was used an Anova Factorial B.W. to the variables which sampling was normal and to test the variables which sampling wasn’t normal, we used the Kruskal-Wallis non-parametrical test. The statistically significant was kept at 0,05. In all the considerated parameters, weren’t detected any statistically significant differences between the studied tasks. The results suggest that the manual and symmetrical carrying of external loads up to 15% of the body weight doesn’t produce significant changes on the temporospatial behaviour and on the plantar pressure in postmenopausal women. The confirmation of this situation requests, nevertheless, the use of a more representative sample, and and implementing a protocol with more intense added loads.
The estrogenic reduction caused by the menopause is associated to a set of biologic changes on the woman, susceptible of influencing her bipedal locomotion. The manual carrying of external loads during walking is a common task in women everyday at this climatéric phase. The general aim of the study was the analysis the influence of the manual carrying of loads on the behaviour of spatial-temporal parameters, and of the plantar pressure during walking of a group of women with permanent menorrhea (n=7, 57,25± 4.80 years). Using photoelectric cells (Brower Timing Systems SpeedTrap 2, 1998), and the platform of plantar pressure footscan (RsScan International, 1m × 0.4m, 8192 sensors, 253 Hz), were obtained and analysed data on spatial-temporal parameters, and of the plantar pressure, deriving from the plantar support performed during walking, with and without the manual and symmetrical carrying of external load with 5, 10 and 15 % of the body weight. The average values and standard deviation were obtained and analysed by task, and was tested the normality of the data distribution through the Kolmogorof – Smirnof test. It was used an Anova Factorial B.W. to the variables which sampling was normal and to test the variables which sampling wasn’t normal, we used the Kruskal-Wallis non-parametrical test. The statistically significant was kept at 0,05. In all the considerated parameters, weren’t detected any statistically significant differences between the studied tasks. The results suggest that the manual and symmetrical carrying of external loads up to 15% of the body weight doesn’t produce significant changes on the temporospatial behaviour and on the plantar pressure in postmenopausal women. The confirmation of this situation requests, nevertheless, the use of a more representative sample, and and implementing a protocol with more intense added loads.
Descrição
Dissertação de Mestrado em Educação Física e Desporto
Palavras-chave
Caminhar , Pressão Plantar , Cargas Acrescidas , Mulheres Pós-Menopáusicas