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Related Experiment Video

Updated: Oct 2, 2025

Experimental Methods to Study Human Postural Control
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COVID-19 and Postural Control-A Stabilographic Study Using Rambling-Trembling Decomposition Method.

Magdalena Żychowska1, Kamila Jaworecka1, Ewelina Mazur1

  • 1Department of Dermatology, Institute of Medical Sciences, Medical College of Rzeszow University, 35-055 Rzeszow, Poland.

Medicina (Kaunas, Lithuania)
|February 25, 2022
PubMed
Summary

Coronavirus disease (COVID-19) survivors with olfactory dysfunction or respiratory issues may experience lasting balance deficits. Post-COVID-19 postural control impairments suggest potential neurological impacts requiring monitoring.

Keywords:
COVID-19SARS-CoV-2postural controlrambling-tremblingstabilographystabilometry

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Area of Science:

  • Neurology
  • Respiratory Medicine
  • Biophysics

Background:

  • Respiratory viruses, including SARS-CoV-2, can exhibit neurotropic properties.
  • The COVID-19 pandemic has raised concerns about potential long-term neurological sequelae.
  • Understanding the impact of COVID-19 on neurological functions like balance is crucial.

Purpose of the Study:

  • To investigate the effects of COVID-19 on postural control in individuals recently recovered from the infection.
  • To assess if specific COVID-19 symptoms correlate with changes in balance.

Main Methods:

  • A study involving 33 COVID-19 convalescents (2-4 weeks post-infection) and 35 healthy controls.
  • Utilized a force platform to measure ground reaction forces during quiet standing.
  • Analyzed center of pressure (COP) parameters, including rambling (RAMB) and trembling (TREMB) components, and sample entropy.

Main Results:

  • Increased TREMB was observed in COVID-19 survivors with prior anosmia/hyposmia during eyes-closed testing (p=0.03).
  • Individuals reporting dyspnea during COVID-19 showed significant increases in COP length, velocity, RAMB, and TREMB (p<0.001).
  • These findings indicate substantial alterations in postural control post-COVID-19.

Conclusions:

  • COVID-19 survivors experiencing olfactory dysfunction or respiratory distress exhibit balance deficits.
  • The rambling-trembling decomposition method may identify less efficient peripheral control mechanisms.
  • Neurological monitoring for COVID-19 sequelae is recommended.