Energy Consumption of the Body's Center of Pressure Signal in Older Adults with Balance Disorders

Suárez, Hamlet; Sotta, Gonzalo; Ferreira, Enrique; Roman, Cecilia San; Arocena, Sofia; Bagalciague, Fernando

doi:10.1166/jnsne.2014.1094

Cited by 4 publications

(1 citation statement)

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“…Our group also demonstrated that patients with peripheral vestibulopathy showed an increase in activity of middle to high frequency movement (>0.1 Hz) during static posturography ( 23 ). Another group showed that elderly BV patients had greater energy consumption of COP at high frequencies (>0.78 Hz) ( 38 ). Our result suggests that nGVS can attenuate the high frequency component of COP movement, which is characteristic in patients with vestibulopathy, to bring them closer to the normal range of frequency components of postural sway in healthy subjects.…”

Section: Discussionmentioning

confidence: 99%

Noisy Galvanic Vestibular Stimulation Sustainably Improves Posture in Bilateral Vestibulopathy

et al. 2018

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Patients with bilateral vestibulopathy (BV) suffer from persistent postural imbalance, leading to a marked decrease in quality of life and a higher risk of falls. However, so far, the effective treatments for BV are very limited. We examined whether long-term noisy galvanic vestibular stimulation (nGVS) keeps improving body balance after the cessation of the stimulus in BV patients. Thirteen BV patients received nGVS for 30 min with a lower intensity than the intensity at which they feel any cutaneous sensations, and their postural movement was monitored for 6 h after the stimuli. The same session was repeated at 14-day intervals. Stance tasks on two legs were performed with eyes closed. The velocity of the center of pressure (COP) movement, the area enclosed by the COP movement, and the root mean square of the displacement of the COP were measured. The power spectrum of the COP movement was assessed. Subjective improvement of body balance was graded as worsened (−2), slightly worsened (−1), unchanged (0), slightly improved (+1) and improved (+2) in comparison with that without nGVS. In each session, the velocity of the COP movement was significantly improved for 6 h after the stimulus had ceased (P < 0.01). Concomitantly, the mean frequency of the COP power spectrum was significantly reduced in the anterior-posterior axis (P < 0.05). Subjective symptoms of imbalance were improved during the post-stimulation effect (P < 0.05). nGVS leads to an improvement in body balance that lasts for several hours after the end of the stimulus in BV patients with a reduction in the high-frequency components of their postural movement. This trial was registered with the University Hospital Medical Information Network (UMIN) Clinical Trials Registry (UMINCTR: UMIN000028054).

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Section: Discussionmentioning

confidence: 99%

Noisy Galvanic Vestibular Stimulation Sustainably Improves Posture in Bilateral Vestibulopathy

et al. 2018

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Noisy galvanic vestibular stimulation has a greater ameliorating effect on posture in unstable subjects: a feasibility study

Fujimoto

Kinoshita

Kamogashira

et al. 2019

Sci Rep

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Ameliorating effect of noisy galvanic vestibular stimulation (nGVS) on posture varies among subjects. In this feasibility study, we investigated the association between original postural instability and the ameliorating effect of nGVS on posture. Data were collected in a previously published study. Thirty healthy elderly were recruited. Two nGVS sessions (30 min or 3 h) were performed in a randomised order. The optimal intensity of nGVS, the most effective intensity for improving posture, was determined before each session. Posture was measured for 30 s during and after nGVS in the eyes-closed/foam rubber condition. The velocity, envelopment area, and root mean square of the centre of pressure movement without nGVS were significantly larger in the group with an optimal intensity than those in the group without an optimal intensity. There was a significant positive correlation between these values and the long-term ameliorating effects. The ratio of the values in the eyes-closed/foam rubber condition to those in the eyes-open condition was significantly larger in the group with an optimal intensity, and had a significant correlation with the long-term ameliorating effects. The ameliorating effects are greater in subjects who were originally unstable and in those whose postural stability was relatively independent of vestibular input.

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Postural control characterization according to age and auditory input in cochlear implant users

Suárez

Ferreira

Pintos

et al. 2020

Cochlear Implants International

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Energy Consumption of the Body's Center of Pressure Signal in Older Adults with Balance Disorders

Cited by 4 publications

References 0 publications

Noisy Galvanic Vestibular Stimulation Sustainably Improves Posture in Bilateral Vestibulopathy

Noisy Galvanic Vestibular Stimulation Sustainably Improves Posture in Bilateral Vestibulopathy

Noisy galvanic vestibular stimulation has a greater ameliorating effect on posture in unstable subjects: a feasibility study

Postural control characterization according to age and auditory input in cochlear implant users

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