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Decrease in walking speed increases hip moment impulse in the frontal plane during the stance phase

BACKGROUND: Increased daily cumulative hip moment in the frontal plane (i.e., the product of hip moment impulse in the frontal plane during the stance phase and mean steps per day) is a risk factor for progression of hip osteoarthritis. Although hip osteoarthritis generally causes a decrease in the...

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Autores principales: Inai, Takuma, Takabayashi, Tomoya, Edama, Mutsuaki, Kubo, Masayoshi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6873874/
https://www.ncbi.nlm.nih.gov/pubmed/31763077
http://dx.doi.org/10.7717/peerj.8110
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author Inai, Takuma
Takabayashi, Tomoya
Edama, Mutsuaki
Kubo, Masayoshi
author_facet Inai, Takuma
Takabayashi, Tomoya
Edama, Mutsuaki
Kubo, Masayoshi
author_sort Inai, Takuma
collection PubMed
description BACKGROUND: Increased daily cumulative hip moment in the frontal plane (i.e., the product of hip moment impulse in the frontal plane during the stance phase and mean steps per day) is a risk factor for progression of hip osteoarthritis. Although hip osteoarthritis generally causes a decrease in the walking speed, its effect on hip moment impulse in the frontal plane is unclear. The purpose of this study was to examine the relationship between decrease in walking speed and hip moment impulse in the frontal plane. METHODS: We used a public dataset of treadmill walking in 17 older adults (mean (SD) age: 63.2 (8.0) years). The subjects walked on the treadmill for 30 s under five conditions: (1) 40% of comfortable non-dimensional speed (CNDS), (2) 55% CNDS, (3) 70% CNDS, (4) 85% CNDS, and (5) 100% CNDS. The hip moment impulse in the frontal plane non-normalized (or normalized) to step length (Nm s/kg [or Nm s/(kg m)]) for each condition was calculated. Furthermore, the relationship between walking speed and hip moment impulse in the frontal plane non-normalized (or normalized) to step length was examined using regression analysis based on a previous study. RESULTS: A decrease in non-dimensional speed (i.e., walking speed) significantly increased the non-normalized (or normalized) hip moment impulse in the frontal plane during the stance phase. The relationship between walking speed and non-normalized (or normalized) hip moment impulse in the frontal plane was fitted by a second-order polynomial. DISCUSSION: This study revealed that a decrease in walking speed increased the non-normalized (or normalized) hip moment impulse in the frontal plane in healthy older adults. This finding is useful for understanding the relationship between walking speed and hip moment impulse in the frontal plane and suggests that a decrease in walking speed may actually increase the daily cumulative hip moment in the frontal plane of patients with hip osteoarthritis.
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spelling pubmed-68738742019-11-23 Decrease in walking speed increases hip moment impulse in the frontal plane during the stance phase Inai, Takuma Takabayashi, Tomoya Edama, Mutsuaki Kubo, Masayoshi PeerJ Kinesiology BACKGROUND: Increased daily cumulative hip moment in the frontal plane (i.e., the product of hip moment impulse in the frontal plane during the stance phase and mean steps per day) is a risk factor for progression of hip osteoarthritis. Although hip osteoarthritis generally causes a decrease in the walking speed, its effect on hip moment impulse in the frontal plane is unclear. The purpose of this study was to examine the relationship between decrease in walking speed and hip moment impulse in the frontal plane. METHODS: We used a public dataset of treadmill walking in 17 older adults (mean (SD) age: 63.2 (8.0) years). The subjects walked on the treadmill for 30 s under five conditions: (1) 40% of comfortable non-dimensional speed (CNDS), (2) 55% CNDS, (3) 70% CNDS, (4) 85% CNDS, and (5) 100% CNDS. The hip moment impulse in the frontal plane non-normalized (or normalized) to step length (Nm s/kg [or Nm s/(kg m)]) for each condition was calculated. Furthermore, the relationship between walking speed and hip moment impulse in the frontal plane non-normalized (or normalized) to step length was examined using regression analysis based on a previous study. RESULTS: A decrease in non-dimensional speed (i.e., walking speed) significantly increased the non-normalized (or normalized) hip moment impulse in the frontal plane during the stance phase. The relationship between walking speed and non-normalized (or normalized) hip moment impulse in the frontal plane was fitted by a second-order polynomial. DISCUSSION: This study revealed that a decrease in walking speed increased the non-normalized (or normalized) hip moment impulse in the frontal plane in healthy older adults. This finding is useful for understanding the relationship between walking speed and hip moment impulse in the frontal plane and suggests that a decrease in walking speed may actually increase the daily cumulative hip moment in the frontal plane of patients with hip osteoarthritis. PeerJ Inc. 2019-11-19 /pmc/articles/PMC6873874/ /pubmed/31763077 http://dx.doi.org/10.7717/peerj.8110 Text en ©2019 Inai et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Kinesiology
Inai, Takuma
Takabayashi, Tomoya
Edama, Mutsuaki
Kubo, Masayoshi
Decrease in walking speed increases hip moment impulse in the frontal plane during the stance phase
title Decrease in walking speed increases hip moment impulse in the frontal plane during the stance phase
title_full Decrease in walking speed increases hip moment impulse in the frontal plane during the stance phase
title_fullStr Decrease in walking speed increases hip moment impulse in the frontal plane during the stance phase
title_full_unstemmed Decrease in walking speed increases hip moment impulse in the frontal plane during the stance phase
title_short Decrease in walking speed increases hip moment impulse in the frontal plane during the stance phase
title_sort decrease in walking speed increases hip moment impulse in the frontal plane during the stance phase
topic Kinesiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6873874/
https://www.ncbi.nlm.nih.gov/pubmed/31763077
http://dx.doi.org/10.7717/peerj.8110
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