"Comparação de parâmetros cinemáticos da marcha entre indivíduos jovens e idosos em tarefas de ateração do comprimento preferido do passo" / COMPARISON OF GAIT CINEMATIC PARAMETERS BETWEEN YOUNG AND OLD INDIVIDUALS UNDER CHANGES ON PREFERED STEP LENGHT TASKS

AUTOR(ES)

Ester Francisca Mendes

DATA DE PUBLICAÇÃO

2005

RESUMO

The main purpose of this study was verifying the effect of step length restrictions on gait performance of young and old aged, assuming that: (a) when submitted to similar gait conditions, young and old aged presents analogous performance in some gait parameters; (b) the step length restrictions intervene on gait velocity an phase relation between arm and leg in the same way for young and old aged; (c) the step length restrictions cause a larger impact on phase relations variability between superior and inferior limbs for old aged. In order to verify these hypothesis, nine young adults and eight old-aged was filmed on three tasks: regular gait, increase on step length and decrease on step length. The comparisons was made to the following variables: gait velocity, cadency, step length and leg length rate, amplitude of ankle angular variation, amplitude of arm angular variation, phase relation and phase relation variability between right superior and right inferior limbs. The results revealed that the old-aged gait pattern was similar to the adult pattern in considerably aspects. Step length restrictions carried to significative changes on gait velocity for young and old aged, suggesting that part of modifications on old people gait pattern are related to decrease on step length. The movement coordination, analyzed by phase relation between right superior and right inferior limbs was influenced by task condition but not the stability of coordination between arm and legs. These findings corroborates the initial hypothesis, about the similarity of the adaptative characteristics between both groups. The interpretation of these results allows concluding that: (a) on regular gait, young and old aged had similar performance; (b) the step length alterations exerted significative effect over gait velocity, amplitude of arm angular variation and phase relations between superior and inferior limbs on the same way for young and old aged; (c) the task condition had no influence over the amplitude of ankle movement neither over variability of phase relations.

ASSUNTO(S)

fase relativa ageing phase relation cinematic parameters gait parâmetros cinemáticos marcha envelhecimento

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