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Effects of remote facilitation on ankle joint movement: Focusing on occlusal strength and balance
BACKGROUND: Remote facilitation refers to teeth occlusion‐activated spinal cord activity resulting in increased trunk and limb muscle strength. Facilitation depends on dentition‐related pressure during occlusion and masticatory muscle contraction strength. AIMS: This study aimed to clarify the neuro...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9898801/ https://www.ncbi.nlm.nih.gov/pubmed/36778778 http://dx.doi.org/10.1002/hsr2.1098 |
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author | Yamada, Yuki Hirabayashi, Ryo Okada, Yoshiyuki Yokota, Hirotake Sekine, Chie Edama, Mutsuaki |
author_facet | Yamada, Yuki Hirabayashi, Ryo Okada, Yoshiyuki Yokota, Hirotake Sekine, Chie Edama, Mutsuaki |
author_sort | Yamada, Yuki |
collection | PubMed |
description | BACKGROUND: Remote facilitation refers to teeth occlusion‐activated spinal cord activity resulting in increased trunk and limb muscle strength. Facilitation depends on dentition‐related pressure during occlusion and masticatory muscle contraction strength. AIMS: This study aimed to clarify the neurophysiological phenomenon and mechanisms by which occlusal strength and balance affect leg muscle activity and smooth joint movement execution. MATERIALS & METHODS: To examine occlusal strength, three conditions were set: no contact between teeth and Moderate‐ and Maximum‐strength occlusion (No‐bite, Moderate, and Max conditions, respectively). To assess occlusal balance, we measured occlusal forces and calculated the left‐right force ratio. We designated the sides with higher and lower occlusal pressure as hypertonic and hypotonic, respectively. We assessed ankle dorsiflexion movements with joint movement and isometric tasks. RESULTS: The rate of joint development and peak ankle dorsiflexion torque were significantly higher under occlusion (moderate and max compared to No‐bite conditions), and the joint movement performance time was significantly shorter under Moderate compared to No‐bite conditions. The joint movement execution time change rate from No‐bite to Moderate condition was significantly lower on the Hypertonic side. Joint movement function was most improved under Moderate conditions. DISCUSSION: While remote facilitation improves with higher occlusal strength, leading to increased muscle strength, there is optimal occlusion intensity in joint movement. Moreover, an occlusal balance‐dependent imbalance exists in remote facilitation between the Hyper‐ and Hypotonic sides. CONCLUSION: Thus, low‐intensity occlusion is optimal for smooth joint movement, and unbalanced occlusion results in asymmetrical motor function facilitation. |
format | Online Article Text |
id | pubmed-9898801 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-98988012023-02-09 Effects of remote facilitation on ankle joint movement: Focusing on occlusal strength and balance Yamada, Yuki Hirabayashi, Ryo Okada, Yoshiyuki Yokota, Hirotake Sekine, Chie Edama, Mutsuaki Health Sci Rep Original Research BACKGROUND: Remote facilitation refers to teeth occlusion‐activated spinal cord activity resulting in increased trunk and limb muscle strength. Facilitation depends on dentition‐related pressure during occlusion and masticatory muscle contraction strength. AIMS: This study aimed to clarify the neurophysiological phenomenon and mechanisms by which occlusal strength and balance affect leg muscle activity and smooth joint movement execution. MATERIALS & METHODS: To examine occlusal strength, three conditions were set: no contact between teeth and Moderate‐ and Maximum‐strength occlusion (No‐bite, Moderate, and Max conditions, respectively). To assess occlusal balance, we measured occlusal forces and calculated the left‐right force ratio. We designated the sides with higher and lower occlusal pressure as hypertonic and hypotonic, respectively. We assessed ankle dorsiflexion movements with joint movement and isometric tasks. RESULTS: The rate of joint development and peak ankle dorsiflexion torque were significantly higher under occlusion (moderate and max compared to No‐bite conditions), and the joint movement performance time was significantly shorter under Moderate compared to No‐bite conditions. The joint movement execution time change rate from No‐bite to Moderate condition was significantly lower on the Hypertonic side. Joint movement function was most improved under Moderate conditions. DISCUSSION: While remote facilitation improves with higher occlusal strength, leading to increased muscle strength, there is optimal occlusion intensity in joint movement. Moreover, an occlusal balance‐dependent imbalance exists in remote facilitation between the Hyper‐ and Hypotonic sides. CONCLUSION: Thus, low‐intensity occlusion is optimal for smooth joint movement, and unbalanced occlusion results in asymmetrical motor function facilitation. John Wiley and Sons Inc. 2023-02-04 /pmc/articles/PMC9898801/ /pubmed/36778778 http://dx.doi.org/10.1002/hsr2.1098 Text en © 2023 The Authors. Health Science Reports published by Wiley Periodicals LLC. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. |
spellingShingle | Original Research Yamada, Yuki Hirabayashi, Ryo Okada, Yoshiyuki Yokota, Hirotake Sekine, Chie Edama, Mutsuaki Effects of remote facilitation on ankle joint movement: Focusing on occlusal strength and balance |
title | Effects of remote facilitation on ankle joint movement: Focusing on occlusal strength and balance |
title_full | Effects of remote facilitation on ankle joint movement: Focusing on occlusal strength and balance |
title_fullStr | Effects of remote facilitation on ankle joint movement: Focusing on occlusal strength and balance |
title_full_unstemmed | Effects of remote facilitation on ankle joint movement: Focusing on occlusal strength and balance |
title_short | Effects of remote facilitation on ankle joint movement: Focusing on occlusal strength and balance |
title_sort | effects of remote facilitation on ankle joint movement: focusing on occlusal strength and balance |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9898801/ https://www.ncbi.nlm.nih.gov/pubmed/36778778 http://dx.doi.org/10.1002/hsr2.1098 |
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