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Transition versus Continuous Slope Walking: Adaptation to Change Center of Mass Velocity in Young Men

During continuous uphill walking (UW) or downhill walking, human locomotion is modified to counteract the gravitational force, aiding or impeding the body's forward momentum, respectively. This study aimed at investigating the center of mass (COM) and center of pressure (COP) velocities and the...

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Autores principales: Hong, Yoon No Gregory, Lee, Jinkyu, Shin, Choongsoo S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6029508/
https://www.ncbi.nlm.nih.gov/pubmed/30018660
http://dx.doi.org/10.1155/2018/2028638
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author Hong, Yoon No Gregory
Lee, Jinkyu
Shin, Choongsoo S.
author_facet Hong, Yoon No Gregory
Lee, Jinkyu
Shin, Choongsoo S.
author_sort Hong, Yoon No Gregory
collection PubMed
description During continuous uphill walking (UW) or downhill walking, human locomotion is modified to counteract the gravitational force, aiding or impeding the body's forward momentum, respectively. This study aimed at investigating the center of mass (COM) and center of pressure (COP) velocities and their relative distance during the transition from uphill to downhill walking (UDW) to determine whether locomotor adjustments differ between UDW and UW. Fourteen participants walked on a triangular slope and a continuous upslope of 15°. The kinematics and COPs were obtained using a force plate and a motion capture system. The vertical velocity of the COM in the propulsion phase, the horizontal distance between the COM and COP at initial contact, and the duration of the subphases significantly differed between UDW and UW (all p < 0.05). Compared with the results of UW, longer durations and the deeper downward moving COM in the propulsion phase were observed during UDW (all p < 0.05). Additionally, a shorter horizontal distance between the COM and COP at initial contact was associated with a slower vertical COM velocity in the propulsion phase during UDW. The reduced velocity is likely a gait alteration to decrease the forward momentum of the body during UDW.
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spelling pubmed-60295082018-07-17 Transition versus Continuous Slope Walking: Adaptation to Change Center of Mass Velocity in Young Men Hong, Yoon No Gregory Lee, Jinkyu Shin, Choongsoo S. Appl Bionics Biomech Research Article During continuous uphill walking (UW) or downhill walking, human locomotion is modified to counteract the gravitational force, aiding or impeding the body's forward momentum, respectively. This study aimed at investigating the center of mass (COM) and center of pressure (COP) velocities and their relative distance during the transition from uphill to downhill walking (UDW) to determine whether locomotor adjustments differ between UDW and UW. Fourteen participants walked on a triangular slope and a continuous upslope of 15°. The kinematics and COPs were obtained using a force plate and a motion capture system. The vertical velocity of the COM in the propulsion phase, the horizontal distance between the COM and COP at initial contact, and the duration of the subphases significantly differed between UDW and UW (all p < 0.05). Compared with the results of UW, longer durations and the deeper downward moving COM in the propulsion phase were observed during UDW (all p < 0.05). Additionally, a shorter horizontal distance between the COM and COP at initial contact was associated with a slower vertical COM velocity in the propulsion phase during UDW. The reduced velocity is likely a gait alteration to decrease the forward momentum of the body during UDW. Hindawi 2018-06-19 /pmc/articles/PMC6029508/ /pubmed/30018660 http://dx.doi.org/10.1155/2018/2028638 Text en Copyright © 2018 Yoon No Gregory Hong et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Hong, Yoon No Gregory
Lee, Jinkyu
Shin, Choongsoo S.
Transition versus Continuous Slope Walking: Adaptation to Change Center of Mass Velocity in Young Men
title Transition versus Continuous Slope Walking: Adaptation to Change Center of Mass Velocity in Young Men
title_full Transition versus Continuous Slope Walking: Adaptation to Change Center of Mass Velocity in Young Men
title_fullStr Transition versus Continuous Slope Walking: Adaptation to Change Center of Mass Velocity in Young Men
title_full_unstemmed Transition versus Continuous Slope Walking: Adaptation to Change Center of Mass Velocity in Young Men
title_short Transition versus Continuous Slope Walking: Adaptation to Change Center of Mass Velocity in Young Men
title_sort transition versus continuous slope walking: adaptation to change center of mass velocity in young men
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6029508/
https://www.ncbi.nlm.nih.gov/pubmed/30018660
http://dx.doi.org/10.1155/2018/2028638
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