Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2018 Jun;30(6):879-882.
doi: 10.1589/jpts.30.879. Epub 2018 Jun 12.

Effects of task velocity and center of mass acceleration during Y-Balance Test in elderly females with good and poor visual acuity

Sun-Shil Shin  1 , Won-Gyu Yoo  1 , Duk-Hyun An  1
Affiliations

Effects of task velocity and center of mass acceleration during Y-Balance Test in elderly females with good and poor visual acuity

Sun-Shil Shin et al. J Phys Ther Sci. 2018 Jun.

Abstract

[Purpose] To explore the effects of good binocular visual acuity (BVA) compared to poor BVA, reach distance, task velocity, and center of mass (COM) acceleration were evaluated in elderly females performing the Y-Balance Test (YBT) using a cross-sectional design. [Subjects and Methods] A total of 13 participants had BVA of ≥0.4 log of the minimum angle of resolution (logMAR) (poor BVA group), and the other 13 had BVA of ≤0.3 logMAR (good BVA group). An accelerometer was attached over participants' L3 spinous process, and they then performed the YBT. [Results] The normalized reach distances in the three directions among the good BVA group were longer than those among the poor BVA group. The task velocity in the good BVA group was significantly higher, whereas COM acceleration in the A direction was significantly lower compared with the poor BVA group. [Conclusion] Visual status must be considered when older adult individuals undergo physical therapy and functional training to ensure that healthcare professionals can better assist older adult women.

Keywords: Center of mass acceleration; Elderly females; Visual acuity.

PubMed Disclaimer

References

    1. Howe TE, Rochester L, Neil F, et al. : Exercise for improving balance in older people. Cochrane Database Syst Rev, 2011, 9: CD004963. - PMC - PubMed
    1. Rhea CK, Rietdyk S: Visual exteroceptive information provided during obstacle crossing did not modify the lower limb trajectory. Neurosci Lett, 2007, 418: 60–65. - PubMed
    1. Dingenen B, Staes FF, Janssens L: A new method to analyze postural stability during a transition task from double-leg stance to single-leg stance. J Biomech, 2013, 46: 2213–2219. - PubMed
    1. Muir BC, Haddad JM, Heijnen MJ, et al. : Proactive gait strategies to mitigate risk of obstacle contact are more prevalent with advancing age. Gait Posture, 2015, 41: 233–239. - PubMed
    1. Hazime FA, Allard P, Ide MR, et al. : Postural control under visual and proprioceptive perturbations during double and single limb stances: insights for balance training. J Bodyw Mov Ther, 2012, 16: 224–229. - PubMed

LinkOut - more resources