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Effects of exercise habituation and aging on the intersegmental coordination of lower limbs during walking with sinusoidal speed change

BACKGROUND: The time courses of the joint elevation angles of the thigh, shank, and foot in one stride during walking can be well approximated by a “plane” in a triaxial space. This intersegmental coordination (IC) of the lower limb elevation angles is referred to as the planar covariation law. We e...

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Autores principales: Abe, Daijiro, Motoyama, Kiyotaka, Tashiro, Takehiro, Saito, Akira, Horiuchi, Masahiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9175341/
https://www.ncbi.nlm.nih.gov/pubmed/35676743
http://dx.doi.org/10.1186/s40101-022-00298-w
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author Abe, Daijiro
Motoyama, Kiyotaka
Tashiro, Takehiro
Saito, Akira
Horiuchi, Masahiro
author_facet Abe, Daijiro
Motoyama, Kiyotaka
Tashiro, Takehiro
Saito, Akira
Horiuchi, Masahiro
author_sort Abe, Daijiro
collection PubMed
description BACKGROUND: The time courses of the joint elevation angles of the thigh, shank, and foot in one stride during walking can be well approximated by a “plane” in a triaxial space. This intersegmental coordination (IC) of the lower limb elevation angles is referred to as the planar covariation law. We examined the effects of exercise habituation and aging on the thickness of the IC plane of the lower limbs under sinusoidal speed changing conditions. METHODS: Seventeen sedentary young (SY), 16 active young (AY), and 16 active elderly (AE) adults walked on a treadmill in accordance with a sinusoidal speed changing protocol at 120, 60, and 30 s periods with an amplitude of ± 0.56 m·s(−1). Motion of the lower limbs from the sagittal direction was recorded to calculate the elevation angles of the lower limbs. When the best-fit IC plane was determined, the smallest standard deviation of the IC plane was considered as the anteroposterior gait variability of the lower limbs. The coefficient of variance of the step width was also quantified to evaluate the lateral step variability (CV(SW)). RESULTS: The standard deviation of the IC plane was significantly greater in the order of SY, AY, and AE, regardless of the sinusoidal wave periods of the changing speed. The CV(SW) was not significantly different among the three groups. CONCLUSIONS: Exercise habituation influences anteroposterior gait variability of the lower limbs, but not lateral step variability, even in young adults. Given these, gait adaptability for sinusoidal speed changes does not always decline with aging. TRIAL REGISTRATION: UMIN000031456 (R000035911; registered February 23, 2018). SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s40101-022-00298-w.
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spelling pubmed-91753412022-06-09 Effects of exercise habituation and aging on the intersegmental coordination of lower limbs during walking with sinusoidal speed change Abe, Daijiro Motoyama, Kiyotaka Tashiro, Takehiro Saito, Akira Horiuchi, Masahiro J Physiol Anthropol Original Article BACKGROUND: The time courses of the joint elevation angles of the thigh, shank, and foot in one stride during walking can be well approximated by a “plane” in a triaxial space. This intersegmental coordination (IC) of the lower limb elevation angles is referred to as the planar covariation law. We examined the effects of exercise habituation and aging on the thickness of the IC plane of the lower limbs under sinusoidal speed changing conditions. METHODS: Seventeen sedentary young (SY), 16 active young (AY), and 16 active elderly (AE) adults walked on a treadmill in accordance with a sinusoidal speed changing protocol at 120, 60, and 30 s periods with an amplitude of ± 0.56 m·s(−1). Motion of the lower limbs from the sagittal direction was recorded to calculate the elevation angles of the lower limbs. When the best-fit IC plane was determined, the smallest standard deviation of the IC plane was considered as the anteroposterior gait variability of the lower limbs. The coefficient of variance of the step width was also quantified to evaluate the lateral step variability (CV(SW)). RESULTS: The standard deviation of the IC plane was significantly greater in the order of SY, AY, and AE, regardless of the sinusoidal wave periods of the changing speed. The CV(SW) was not significantly different among the three groups. CONCLUSIONS: Exercise habituation influences anteroposterior gait variability of the lower limbs, but not lateral step variability, even in young adults. Given these, gait adaptability for sinusoidal speed changes does not always decline with aging. TRIAL REGISTRATION: UMIN000031456 (R000035911; registered February 23, 2018). SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s40101-022-00298-w. BioMed Central 2022-06-08 /pmc/articles/PMC9175341/ /pubmed/35676743 http://dx.doi.org/10.1186/s40101-022-00298-w Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Original Article
Abe, Daijiro
Motoyama, Kiyotaka
Tashiro, Takehiro
Saito, Akira
Horiuchi, Masahiro
Effects of exercise habituation and aging on the intersegmental coordination of lower limbs during walking with sinusoidal speed change
title Effects of exercise habituation and aging on the intersegmental coordination of lower limbs during walking with sinusoidal speed change
title_full Effects of exercise habituation and aging on the intersegmental coordination of lower limbs during walking with sinusoidal speed change
title_fullStr Effects of exercise habituation and aging on the intersegmental coordination of lower limbs during walking with sinusoidal speed change
title_full_unstemmed Effects of exercise habituation and aging on the intersegmental coordination of lower limbs during walking with sinusoidal speed change
title_short Effects of exercise habituation and aging on the intersegmental coordination of lower limbs during walking with sinusoidal speed change
title_sort effects of exercise habituation and aging on the intersegmental coordination of lower limbs during walking with sinusoidal speed change
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9175341/
https://www.ncbi.nlm.nih.gov/pubmed/35676743
http://dx.doi.org/10.1186/s40101-022-00298-w
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