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ABSTRACT: Objective
Noisy galvanic vestibular stimulation (nGVS) is often used to improve postural stability in disorders, such as neurorehabilitation montage. For the safe use of nGVS, we investigated whether arterial pressure (AP) and heart rate vary during static supine and slow whole-body tilt with random nGVS (0.4 mA, 0.1-640 Hz, gaussian distribution) in a healthy elderly population.Methods
This study was conducted with a double-blind, sham-controlled, cross-over design. Seventeen healthy older adults were recruited. They were asked to maintain a static supine position on a bed for 10 min, and the bed was tilted up (TU) to 70 degrees within 30 s. After maintaining this position for 3 min, the bed was passively tilted down (TD) within 30 s. Real-nGVS or sham-nGVS was applied from 4 to 15 min. The time course of mean arterial pressure (MAP) and RR interval variability (RRIV) were analyzed to estimate the autonomic nervous activity.Result
nGVS and/or time, including pre-/post-event (nGVS-start, TU, and TD), had no impact on MAP and RRIV-related parameters. Further, there was no evidence supporting the argument that nGVS induces pain, vertigo/dizziness, and uncomfortable feeling.Conclusion
nGVS may not affect the AP and RRIV during static position and whole-body tilting or cause pain, vertigo/dizziness, and discomfort in the elderly.
SUBMITTER: Matsugi A
PROVIDER: S-EPMC7925407 | biostudies-literature | 2021
REPOSITORIES: biostudies-literature
Matsugi Akiyoshi A Nagino Koji K Shiozaki Tomoyuki T Okada Yohei Y Mori Nobuhiko N Nakamura Junji J Douchi Shinya S Oku Kosuke K Nagano Kiyoshi K Tamaru Yoshiki Y
Frontiers in human neuroscience 20210217
<h4>Objective</h4>Noisy galvanic vestibular stimulation (nGVS) is often used to improve postural stability in disorders, such as neurorehabilitation montage. For the safe use of nGVS, we investigated whether arterial pressure (AP) and heart rate vary during static supine and slow whole-body tilt with random nGVS (0.4 mA, 0.1-640 Hz, gaussian distribution) in a healthy elderly population.<h4>Methods</h4>This study was conducted with a double-blind, sham-controlled, cross-over design. Seventeen he ...[more]