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Postural Control of Elderly Adults on Inclined Surfaces

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Abstract

This study analyzed the postural control of older adults on inclined surfaces, and was conducted in 17 elderly adults and 18 young adults of both genders. Ground reaction forces and moments were collected using two AMTI force platforms, one of which was in a horizontal position (HOR), while the other was inclined 14° in relation to the horizontal plane. Each participant executed three 70 s-trials of bipedal standing with their eyes open and eyes closed in three inclination conditions: the HOR, the inclined position at ankle dorsi-flexion (UP), and the inclined position at ankle plantar-flexion (DOWN). Spectral analysis, global (mean velocity-Velm, ellipse area-Area and F80), and structural stabilometric descriptors (sway density curve–SDC, detrended fluctuation analysis–DFA, sample entropy-SEn) were employed to assess the center of pressure sway. Velm and F80 were greater for the elderly, whereas SDC, DFA, and SEn were smaller for this group. Global, SDC and DFA variables were sensitive to visual deprivation, however the relative difference from the EO to EC condition was higher in young than in elderly. The DOWN condition was more stable than the UP condition for both young and older adults. With regard to the UP condition, the challenge observed is essentially associated with the corresponding biomechanical constraints. In conclusion, the elderly showed significant differences compared to the young, but age per se may not necessarily result in compromised postural control.

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Acknowledgments

The authors are thankful to governmental agencies CAPES and FAPEG for supporting this study.

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Authors and Affiliations

  1. Bioengineering and Biomechanics Laboratory, Universidade Federal de Goiás, Goiânia, Brazil

    Renata da Costa Barbosa & Marcus Fraga Vieira

Authors
  1. Renata da Costa Barbosa
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  2. Marcus Fraga Vieira
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Correspondence to Marcus Fraga Vieira.

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Associate Editor Thurmon E. Lockhart oversaw the review of this article.

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da Costa Barbosa, R., Vieira, M.F. Postural Control of Elderly Adults on Inclined Surfaces. Ann Biomed Eng 45, 726–738 (2017). https://doi.org/10.1007/s10439-016-1718-z

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  • DOI: https://doi.org/10.1007/s10439-016-1718-z

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