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  1. 080 繊維学部
  2. 0801 学術論文

Vector field statistics for objective center-of-pressure trajectory analysis during gait, with evidence of scalar sensitivity to small coordinate system rotations

http://hdl.handle.net/10091/17733
http://hdl.handle.net/10091/17733
f3166e36-7c12-46d8-a7ca-cb845a6f506c
名前 / ファイル ライセンス アクション
Vector_field_statistics_objective_center-of-pressure.pdf Vector_field_statistics_objective_center-of-pressure.pdf (796.2 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2014-07-23
タイトル
言語 en
タイトル Vector field statistics for objective center-of-pressure trajectory analysis during gait, with evidence of scalar sensitivity to small coordinate system rotations
言語
言語 eng
キーワード
主題Scheme Other
主題 Gait analysis
キーワード
主題Scheme Other
主題 Kinematics
キーワード
主題Scheme Other
主題 Statistical parametric mapping
キーワード
主題Scheme Other
主題 Continuum statistics
キーワード
主題Scheme Other
主題 Random field theory
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Pataky, Todd C

× Pataky, Todd C

WEKO 40482

Pataky, Todd C

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Robinson, Mark A

× Robinson, Mark A

WEKO 40483

Robinson, Mark A

Search repository
Vanrenterghem, Jos

× Vanrenterghem, Jos

WEKO 40484

Vanrenterghem, Jos

Search repository
Savage, Russell

× Savage, Russell

WEKO 40485

Savage, Russell

Search repository
Bates, Karl T

× Bates, Karl T

WEKO 40486

Bates, Karl T

Search repository
Crompton, Robin H

× Crompton, Robin H

WEKO 40487

Crompton, Robin H

Search repository
出版者
出版者 ELSEVIER IRELAND LTD
引用
内容記述タイプ Other
内容記述 GAIT & POSTURE. 40(1):255-258 (2014)
書誌情報 GAIT & POSTURE

巻 40, 号 1, p. 255-258, 発行日 2014-05
抄録
内容記述タイプ Abstract
内容記述 Center of pressure (COP) trajectories summarize the complex mechanical interaction between the foot and a contacted surface. Each trajectory itself is also complex, comprising hundreds of instantaneous vectors over the duration of stance phase. To simplify statistical analysis often a small number of scalars are extracted from each COP trajectory. The purpose of this paper was to demonstrate how a more objective approach to COP analysis can avoid particular sensitivities of scalar extraction analysis. A previously published dataset describing the effects of walking speed on plantar pressure (PP) distributions was re-analyzed. After spatially and temporally normalizing the data, speed effects were assessed using a vector-field paired Hotelling's T-2 test. Results showed that, as walking speed increased, the COP moved increasingly posterior at heel contact, and increasingly laterally and anteriorly between similar to 60 and 85% stance, in agreement with previous independent studies. Nevertheless, two extracted scalars disagreed with these results. Furthermore, sensitivity analysis found that a relatively small coordinate system rotation of 5.5 degrees reversed the mediolateral null hypothesis rejection decision. Considering that the foot may adopt arbitrary postures in the horizontal plane, these sensitivity results suggest that non-negligible uncertainty may exist in mediolateral COP effects. As compared with COP scalar extraction, two key advantages of the vector-field approach are: (i) coordinate system independence, (ii) continuous statistical data reflecting the temporal extents of COP trajectory changes.
資源タイプ(コンテンツの種類)
内容記述タイプ Other
内容記述 Article
ISSN
収録物識別子タイプ ISSN
収録物識別子 0966-6362
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA10996363
PubMed
識別子タイプ PMID
関連識別子 http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?CMD=search&DB=pubmed&term=24726191
関連名称 24726191
DOI
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.gaitpost.2014.01.023
関連名称 10.1016/j.gaitpost.2014.01.023
権利
権利情報 Copyright© 2014 Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/)
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
WoS
表示名 Web of Science
URL http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000336387300046
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