Falls are the most common type of accidents among the elderly and occur mainly during the march. Gait disorders are the most common problem in the elderly population and its prevalence increases with age. The biomechanical changes in gait are related to a higher energy expenditure that can lead to fatigue more quickly, and therefore a worsening in the performance of walking. There are several studies that discuss the biomechanical variables in gait of elderly fallers and non-fallers, however, is scarce number of studies to determine if a more timely indicators of falls and biomechanical variables in elderly fallers and non-fallers afeter fatigue . The present study aims to analyze the effect of fatigue on biomechanical variables caidores elderly and not incremental protocol caidores after fatigue. The number of volunteers will be obtained from sample calculations from pilot studies. The sample will be comprised of individuals aged 60-80 years, which will be divided into two groups: elderly caidore (GIC) and non-elderly group caidores (ginkgo). The evaluation procedures will be performed in one day. Initially the evaluation of the march will take place on the ground, then the incremental protocol of fatigue on the treadmill and then reassessing the march. The data will be collected electromyographic, kinematic and dynamometric during the evaluation of ground motion, and electromyographic data, kinematic and incremental protocol during metabolic fatigue. Data analysis will be calculated: for the EMG signal, the signal amplitude, the co-contraction of antagonist muscle activity and variability; kinematic data for temporal and spatial variables of gait, and force platform for the center will be checked pressure. Statistical analysis will be done to verify the normality of the data, and then applying specific tests to compare variables between groups and within the same group. For all statistical tests will be adopted the significance level of p <0.05.
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