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Effect of Different Local Vibration Frequencies on the Multiscale Regularity of Plantar Skin Blood Flow

Local vibration has shown promise in improving skin blood flow (SBF). However, there is no consensus on the selection of the best vibration frequency. An important reason may be that previous studies utilized time- and frequency-domain parameters to characterize vibration-induced SBF responses. Thes...

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Autores principales: Liao, Fuyuan, Zhang, Keying, Zhou, Lingling, Chen, Yanni, Elliott, Jeannette, Jan, Yih-Kuen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7712514/
https://www.ncbi.nlm.nih.gov/pubmed/33287056
http://dx.doi.org/10.3390/e22111288
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author Liao, Fuyuan
Zhang, Keying
Zhou, Lingling
Chen, Yanni
Elliott, Jeannette
Jan, Yih-Kuen
author_facet Liao, Fuyuan
Zhang, Keying
Zhou, Lingling
Chen, Yanni
Elliott, Jeannette
Jan, Yih-Kuen
author_sort Liao, Fuyuan
collection PubMed
description Local vibration has shown promise in improving skin blood flow (SBF). However, there is no consensus on the selection of the best vibration frequency. An important reason may be that previous studies utilized time- and frequency-domain parameters to characterize vibration-induced SBF responses. These parameters are unable to characterize the structural features of the SBF response to local vibrations, thus contributing to the inconsistent findings seen in vibration research. The objective of this study was to provide evidence that nonlinear dynamics of SBF responses would be an important aspect for assessing the effect of local vibration on SBF. Local vibrations at 100 Hz, 35 Hz, and 0 Hz (sham vibration) with an amplitude of 1 mm were randomly applied to the right first metatarsal head of 12 healthy participants for 10 min. SBF at the same site was measured for 10 min before and after local vibration. The degree of regularity of SBF was quantified using a multiscale sample entropy algorithm. The results showed that 100 Hz vibration significantly increased multiscale regularity of SBF but 35 Hz and 0 Hz (sham vibration) did not. The significant increase of regularity of SBF after 100 Hz vibration was mainly attributed to increased regularity of SBF oscillations within the frequency interval at 0.0095–0.15 Hz. These findings support the use of multiscale regularity to assess effectiveness of local vibration on improving skin blood flow.
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spelling pubmed-77125142021-02-24 Effect of Different Local Vibration Frequencies on the Multiscale Regularity of Plantar Skin Blood Flow Liao, Fuyuan Zhang, Keying Zhou, Lingling Chen, Yanni Elliott, Jeannette Jan, Yih-Kuen Entropy (Basel) Article Local vibration has shown promise in improving skin blood flow (SBF). However, there is no consensus on the selection of the best vibration frequency. An important reason may be that previous studies utilized time- and frequency-domain parameters to characterize vibration-induced SBF responses. These parameters are unable to characterize the structural features of the SBF response to local vibrations, thus contributing to the inconsistent findings seen in vibration research. The objective of this study was to provide evidence that nonlinear dynamics of SBF responses would be an important aspect for assessing the effect of local vibration on SBF. Local vibrations at 100 Hz, 35 Hz, and 0 Hz (sham vibration) with an amplitude of 1 mm were randomly applied to the right first metatarsal head of 12 healthy participants for 10 min. SBF at the same site was measured for 10 min before and after local vibration. The degree of regularity of SBF was quantified using a multiscale sample entropy algorithm. The results showed that 100 Hz vibration significantly increased multiscale regularity of SBF but 35 Hz and 0 Hz (sham vibration) did not. The significant increase of regularity of SBF after 100 Hz vibration was mainly attributed to increased regularity of SBF oscillations within the frequency interval at 0.0095–0.15 Hz. These findings support the use of multiscale regularity to assess effectiveness of local vibration on improving skin blood flow. MDPI 2020-11-13 /pmc/articles/PMC7712514/ /pubmed/33287056 http://dx.doi.org/10.3390/e22111288 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liao, Fuyuan
Zhang, Keying
Zhou, Lingling
Chen, Yanni
Elliott, Jeannette
Jan, Yih-Kuen
Effect of Different Local Vibration Frequencies on the Multiscale Regularity of Plantar Skin Blood Flow
title Effect of Different Local Vibration Frequencies on the Multiscale Regularity of Plantar Skin Blood Flow
title_full Effect of Different Local Vibration Frequencies on the Multiscale Regularity of Plantar Skin Blood Flow
title_fullStr Effect of Different Local Vibration Frequencies on the Multiscale Regularity of Plantar Skin Blood Flow
title_full_unstemmed Effect of Different Local Vibration Frequencies on the Multiscale Regularity of Plantar Skin Blood Flow
title_short Effect of Different Local Vibration Frequencies on the Multiscale Regularity of Plantar Skin Blood Flow
title_sort effect of different local vibration frequencies on the multiscale regularity of plantar skin blood flow
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7712514/
https://www.ncbi.nlm.nih.gov/pubmed/33287056
http://dx.doi.org/10.3390/e22111288
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