OBJECTIVE: To analyze the biomechanical characteristics of balance in elderly people, based on pressure center oscillation in five foot positions, carried out with open and closed eyes. the sample was made up of 20 elderly people. data were collected using a force platform (amti® or6-5) adjusted to the frequency of 100hz over 60 seconds. METHODS: Data were filtered using a 4th order butterworth filter and fft (fast fourier transform) as well as a 20 hz low pass filter. the kruskal-wallis and mann whitney statistical tests were applied. RESULTS: The cases with the least stability were the positions with eyes closed and those with a reduced sustentation polygon. the positions that presented the greatest stability were the feet 10cm apart at an angle of 45º, a free standing position, and that with feet parallel and 10cm apart, all with the eyes open. CONCLUSION: Visual feedback contributed to posture control.
Balance; Elderly; Biomechanics
