Advertisement

Human Physiology

, Volume 43, Issue 4, pp 416–422 | Cite as

Influence of passive tactile contact of arms on the maintenance of upright posture in humans

  • G. V. Kozhina
  • Yu. S. Levik
  • A. K. Popov
  • B. N. Smetanin
Article

Abstract

The influence of light passive contact of the forearm with a pliable external object (flexible plate) on the maintenance of upright posture was studied in healthy subjects in several conditions, with the eyes closed and on immersion in a virtual visual environment (VVE). The visual environment was either stable or unstable as a result of a synphase (SP) or antiphase (AP) association between the environment and body sway. The posture maintenance analysis focused on estimating the amplitude and frequency characteristics of two elementary variables, which were calculated from the foot center of pressure (CoP) trajectories in the mediolateral and anteroposterior directions. The variables were trajectory of the vertical projection of the center of gravity (variable CG) and difference between the CoP and CG trajectories (variable CoP–CG). In both the absence and presence of passive tactile contact, the root mean square (RMS) values of the oscillation spectra of the two variables were the lowest in the stable visual environment and in the case of the antiphase association of the environment with body sways and the highest in the cases of the synphase association and standing with the eyes closed. Passive contact decreased body sways in both directions, and the RMSs of the spectra of the two variables decreased in all visual conditions. A greater decrease in RMS was observed for the CG variable. Body sways changed not only in amplitude, but also in frequency. Tactile contact increased the median frequencies (MFs) of the CG variable spectra calculated from the anteroposterior and mediolateral body sways. In contrast, a significant increase in MFs calculated for the CoP–CG variable was observed only for anteroposterior body sways. The results showed that passive contact of a forearm with a pliable external object, which does not provide a mechanical support for the subject, significantly improves the maintenance of the upright posture even in an unstable visual environment.

Keywords

upright posture passive tactile contact visual destabilization virtual visual environment 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Jeka, J.J. and Lackner, J.R., Fingertip contact influences human postural control, Exp. Brain Res., 1994, vol. 100, no. 3, p. 495.CrossRefPubMedGoogle Scholar
  2. 2.
    Clapp, S. and Wing, A.M., Light touch contribution to balance in normal bipedal stance, Exp. Brain Res., 1999, vol. 125, no. 4, p. 521.CrossRefPubMedGoogle Scholar
  3. 3.
    Reginella, R., Redfern, M.S., and Furman, J.M., Postural sway with earth-fixed and body-referenced finger contact in young and older adults, J. Vestibular Res., 1999, vol. 9, no. 2, p. 103.Google Scholar
  4. 4.
    Tremblay, F., Mireault, A.-C., Dessureault, L., et al., Postural stabilization from fingertip contact: I. Variations in sway attenuation, perceived stability and contact forces with aging, Exp. Brain Res., 2004, vol. 157, no. 3, p. 275.CrossRefPubMedGoogle Scholar
  5. 5.
    Kanekar, N., Lee, Y.J., and Aruin, A.S., Effect of light finger touch in balance control of individuals with multiple sclerosis, Gait Posture, 2013, vol. 38, no. 4, p. 643.CrossRefPubMedGoogle Scholar
  6. 6.
    Rabin, E., Chen, J., Muratori, L., et al., Haptic feedback from manual contact improves balance control in people with Parkinson’s disease, Gait Posture, 2013, vol. 38, no. 3, p. 373.CrossRefPubMedPubMedCentralGoogle Scholar
  7. 7.
    Magalhães, F.H. and Kohn, A.F., Vibration-enhanced posture stabilization achieved by tactile supplementation: May blind individuals get extra benefits?, Med. Hypotheses, 2011, vol. 77, no. 2, p. 301.CrossRefPubMedGoogle Scholar
  8. 8.
    Chen, F.C. and Tsai, C.L., Light finger contact concurrently reduces postural sway and enhances signal detection performance in children with developmental coordination disorder, Gait Posture, 2016, vol. 45, p. 193.CrossRefPubMedGoogle Scholar
  9. 9.
    Lee, S.-H., Lee, D., Lee, Y., et al., Influence of light touch using the fingertips on postural stability of poststroke patients, J. Phys. Ther. Sci., 2015, vol. 27, no. 2, p. 469.CrossRefPubMedPubMedCentralGoogle Scholar
  10. 10.
    Rabin, E., DiZio, P., Ventura, J., and Lackner, J.R., Influences of arm proprioception and degrees of freedom on postural control with light touch feedback, J. Neurophysiol., 2008, vol. 99, no. 2, p. 595.CrossRefPubMedGoogle Scholar
  11. 11.
    Kouzaki, M. and Masani, K., Reduced postural sway during quiet standing by light touch is due to finger tactile feedback but not mechanical support, Exp. Brain Res., 2008, vol. 188, no. 1, p. 153.CrossRefPubMedGoogle Scholar
  12. 12.
    Rogers, M.W., Wardman, D.L., Lord, S.R., et al., Passive tactile sensory input improves stability during standing, Exp. Brain Res., 2001, vol. 136, no. 4, p. 514.CrossRefPubMedGoogle Scholar
  13. 13.
    Baldan, A.M., Alouche, S.R., Araujo, I.M., et al., Effect of light touch on postural sway in individuals with balance problems: A systematic review, Gait Posture, 2014, vol. 40, no. 1, p. 1.CrossRefPubMedGoogle Scholar
  14. 14.
    Kozhina, G.V., Levik, Yu.S., and Smetanin, B.N., Influence of a light tactile contact on vertical posture maintenance under the conditions of destabilization of visual environment, Hum. Physiol., 2015, vol. 41, no. 5, p. 539.CrossRefGoogle Scholar
  15. 15.
    Smetanin, B.N., Kozhina, G.V., Popov, A.K., and Levik, Yu.S., Spectral analysis of the human body sway during standing on firm and compliant surfaces under different visual conditions, Hum. Physiol., 2016, vol. 42, no. 6, p. 626.CrossRefGoogle Scholar
  16. 16.
    Burdea, G. and Coiffet, P., Virtual Reality Technology, New York: John Wiley & Sons, 2003.Google Scholar
  17. 17.
    Smetanin, B.N., Kozhina, G.V., and Popov, A.K., Effects of manipulations with visual feedback on postural responses in humans maintaining an upright stance, Neurophysiology, 2011, vol. 43, no. 1, p. 30.CrossRefGoogle Scholar
  18. 18.
    Smetanin, B.N., Kozhina, G.V., and Popov, A.K., Maintenance of the upright posture in humans upon manipulating the direction and delay of visual feedback, Neurophysiology, 2012, vol. 44, no. 5, p. 401.CrossRefGoogle Scholar
  19. 19.
    Caron, O., Faure, B., and Brenière, Y., Estimating the center of gravity of the body on the basis of the center of pressure in standing posture, J. Biomech., 1997, vol. 30, nos. 11–12, p. 1169.CrossRefPubMedGoogle Scholar
  20. 20.
    Rougier, P., Compatibility of postural behavior induced by two aspects of visual feedback: Time delay and scale display, Exp. Brain Res., 2005, vol. 165, no. 2, p. 193.CrossRefPubMedGoogle Scholar
  21. 21.
    Nafati, G. and Vuillerme, N., Decreasing internal focus of attention improves postural control during quiet standing in young healthy adults, Res. Q. Exercise Sport, 2011, vol. 82, no. 4, p. 634.CrossRefGoogle Scholar
  22. 22.
    Munoz, F. and Rougier, P.R., Estimation of centre of gravity movements in sitting posture: Application to trunk backward tilt, J. Biomech., 2011, vol. 44, no. 9, p. 1771.CrossRefPubMedGoogle Scholar

Copyright information

© Pleiades Publishing, Inc. 2017

Authors and Affiliations

  • G. V. Kozhina
    • 1
  • Yu. S. Levik
    • 1
  • A. K. Popov
    • 1
  • B. N. Smetanin
    • 1
  1. 1.Kharkevich Institute of Information Transmission ProblemsRussian Academy of SciencesMoscowRussia

Personalised recommendations