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Muscle, Ligaments and Tendons Journal

Lower limb strength, but not sensorial integration, explains the age-associated postural control impairment

Original Article, 113 - 117
doi: 10.11138/mltj/2018.8.1.113
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Abstract
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Introduction: The aging process leads to functional decline of sensorial organs, muscle mass and strength, as well as the sensorimotor integration, culminating in age-associated postural control impairments. The purpose of this study was to compare the balance, the sensorial integration process and the lower limb strength among three old aged groups.
Methods: Eighty-one community-dwelling healthy old people (58% women), assigned into three age groups (60-69 years [n=30], 70-79 years [n=40], and ≥ 80 years [n=11]), participated in this study.
All participants were submitted to anthropometric and stabilometric evaluation, and carried out a Chair stand test. Stabilometric parameters obtained from time (amplitude displacement of center of pressure [CoP]) and frequency (oscillations of CoP at sub 0.3 Hz and 1-3 Hz bands) domain analysis were used as the indicators of balance performance and sensorial integration, respectively.
Results: Our results revealed that the CoP amplitude displacement was significantly greater in the older aged group, without differences in spectral
Muscles, Ligaments and Tendons Journal 2018;8 (1):113-117 113 bands, while the performance in theChair stand test was smaller in the older aged group.
Conclusion: These data indicate that the age-associated postural control impairment is explained by the lower limb strength declines, but not by the age-associated changes in sensorial integration.
Level of evidence:III.

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