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Corporal balance and physical exercises: an investigation in elderly women who practice different exercise modalities

Life expectancy has been progressively increasing, which implies in an increase in the number of elderly individuals. As a consequence, several types of physical activities are offered to this population, aiming at improving some physical qualities. One of those qualities is corporal balance, which has been largely studied due to its association with many diseases that can affect the elderly. Thus, this study compared a group of elderly women that regularly practiced hydrogymnastics with sedentary ones. Fifty-one (51) elderly women with a mean age of 63.26 ± 9.63 years participated in the study group. Balance was evaluated through kinetic assessment, using an AMTI OR6-5 force platform (Advanced Mechanical Technologies, Inc.) at a frequency of 100 Hz. The analyzed variables were the amplitude of the force center displacement and the mean force center displacement in the anteroposterior and midlateral directions. The statistic analysis used the descriptive statistics, the Shapiro-Wilk’s test and the Kruskal-Wallis test with a level of significance of 5%. The results showed statistically significant differences in the midlateral direction, both in range and the mean force center displacement between the groups. Thus, it is possible to conclude that there were differences regarding the balance in the midlateral direction and less instability was observed in the group of elderly women that practiced physical exercises.