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Maximum toe flexor muscle strength and quantitative analysis of human plantar intrinsic and extrinsic muscles by a magnetic resonance imaging technique

BACKGROUND: The aims of this study were to investigate the relationships between the maximum isometric toe flexor muscle strength (TFS) and cross-sectional area (CSA) of the plantar intrinsic and extrinsic muscles and to identify the major determinant of maximum TFS among CSA of the plantar intrinsi...

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Autores principales: Kurihara, Toshiyuki, Yamauchi, Junichiro, Otsuka, Mitsuo, Tottori, Nobuaki, Hashimoto, Takeshi, Isaka, Tadao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4049512/
https://www.ncbi.nlm.nih.gov/pubmed/24955128
http://dx.doi.org/10.1186/1757-1146-7-26
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author Kurihara, Toshiyuki
Yamauchi, Junichiro
Otsuka, Mitsuo
Tottori, Nobuaki
Hashimoto, Takeshi
Isaka, Tadao
author_facet Kurihara, Toshiyuki
Yamauchi, Junichiro
Otsuka, Mitsuo
Tottori, Nobuaki
Hashimoto, Takeshi
Isaka, Tadao
author_sort Kurihara, Toshiyuki
collection PubMed
description BACKGROUND: The aims of this study were to investigate the relationships between the maximum isometric toe flexor muscle strength (TFS) and cross-sectional area (CSA) of the plantar intrinsic and extrinsic muscles and to identify the major determinant of maximum TFS among CSA of the plantar intrinsic and extrinsic muscles. METHODS: Twenty six young healthy participants (14 men, 12 women; age, 20.4 ± 1.6 years) volunteered for the study. TFS was measured by a specific designed dynamometer, and CSA of plantar intrinsic and extrinsic muscles were measured using magnetic resonance imaging (MRI). To measure TFS, seated participants optimally gripped the bar with their toes and exerted maximum force on the dynamometer. For each participant, the highest force produced among three trials was used for further analysis. To measure CSA(,) serial T1-weighted images were acquired. RESULTS: TFS was significantly correlated with CSA of the plantar intrinsic and extrinsic muscles. Stepwise multiple linear regression analyses identified that the major determinant of TFS was CSA of medial parts of plantar intrinsic muscles (flexor hallucis brevis, flexor digitorum brevis, quadratus plantae, lumbricals and abductor hallucis). There was no significant difference between men and women in TFS/CSA. CONCLUSIONS: CSA of the plantar intrinsic and extrinsic muscles is one of important factors for determining the maximum TFS in humans.
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spelling pubmed-40495122014-06-20 Maximum toe flexor muscle strength and quantitative analysis of human plantar intrinsic and extrinsic muscles by a magnetic resonance imaging technique Kurihara, Toshiyuki Yamauchi, Junichiro Otsuka, Mitsuo Tottori, Nobuaki Hashimoto, Takeshi Isaka, Tadao J Foot Ankle Res Research BACKGROUND: The aims of this study were to investigate the relationships between the maximum isometric toe flexor muscle strength (TFS) and cross-sectional area (CSA) of the plantar intrinsic and extrinsic muscles and to identify the major determinant of maximum TFS among CSA of the plantar intrinsic and extrinsic muscles. METHODS: Twenty six young healthy participants (14 men, 12 women; age, 20.4 ± 1.6 years) volunteered for the study. TFS was measured by a specific designed dynamometer, and CSA of plantar intrinsic and extrinsic muscles were measured using magnetic resonance imaging (MRI). To measure TFS, seated participants optimally gripped the bar with their toes and exerted maximum force on the dynamometer. For each participant, the highest force produced among three trials was used for further analysis. To measure CSA(,) serial T1-weighted images were acquired. RESULTS: TFS was significantly correlated with CSA of the plantar intrinsic and extrinsic muscles. Stepwise multiple linear regression analyses identified that the major determinant of TFS was CSA of medial parts of plantar intrinsic muscles (flexor hallucis brevis, flexor digitorum brevis, quadratus plantae, lumbricals and abductor hallucis). There was no significant difference between men and women in TFS/CSA. CONCLUSIONS: CSA of the plantar intrinsic and extrinsic muscles is one of important factors for determining the maximum TFS in humans. BioMed Central 2014-05-05 /pmc/articles/PMC4049512/ /pubmed/24955128 http://dx.doi.org/10.1186/1757-1146-7-26 Text en Copyright © 2014 Kurihara et al.; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research
Kurihara, Toshiyuki
Yamauchi, Junichiro
Otsuka, Mitsuo
Tottori, Nobuaki
Hashimoto, Takeshi
Isaka, Tadao
Maximum toe flexor muscle strength and quantitative analysis of human plantar intrinsic and extrinsic muscles by a magnetic resonance imaging technique
title Maximum toe flexor muscle strength and quantitative analysis of human plantar intrinsic and extrinsic muscles by a magnetic resonance imaging technique
title_full Maximum toe flexor muscle strength and quantitative analysis of human plantar intrinsic and extrinsic muscles by a magnetic resonance imaging technique
title_fullStr Maximum toe flexor muscle strength and quantitative analysis of human plantar intrinsic and extrinsic muscles by a magnetic resonance imaging technique
title_full_unstemmed Maximum toe flexor muscle strength and quantitative analysis of human plantar intrinsic and extrinsic muscles by a magnetic resonance imaging technique
title_short Maximum toe flexor muscle strength and quantitative analysis of human plantar intrinsic and extrinsic muscles by a magnetic resonance imaging technique
title_sort maximum toe flexor muscle strength and quantitative analysis of human plantar intrinsic and extrinsic muscles by a magnetic resonance imaging technique
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4049512/
https://www.ncbi.nlm.nih.gov/pubmed/24955128
http://dx.doi.org/10.1186/1757-1146-7-26
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