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The nature of variability in long-term gait cycle dynamics has been well-investigated, but short-term variability, and specifically correlation, which are highly relevant to short gait bouts, have not. We presently tested for step-to-step autocorrelation in a total of 5243 plantar pressure (PP) distributions from ten subjects who walked at 1.1 m/s on an instrumented treadmill. Following spatial foot alignment, data were analyzed both from three points of interest (POI): heel, central metatarsals, and hallux, and for the foot surface as a whole, in a mass-univariate manner. POI results revealed low average step-to-step autocorrelation coefficients (r = 0.327 +/- 0.094; mean +/- st. dev.). Formal statistical testing of the whole-foot r distributions reached significance over an average of only 0.42 +/- 0.52% of the foot\u0027s surface, even for a highly conservative uncorrected threshold of p \u003c 0.05. 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Short-term step-to-step correlation in plantar pressure distributions during treadmill walking, and implications for footprint trail analysis
http://hdl.handle.net/10091/17731
http://hdl.handle.net/10091/17731ea85dc4d-1561-42c6-ace0-e515a7b2d75a
名前 / ファイル | ライセンス | アクション |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2014-07-23 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Short-term step-to-step correlation in plantar pressure distributions during treadmill walking, and implications for footprint trail analysis | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Gait dynamics | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Pedobarography | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Foot biomechanics | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Autocorrelation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Statistical parametric mapping | |||||
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× Savage, Russell× Bates, Karl T× Sellers, William I× Crompton, Robin H |
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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. 38(4):1054-1057 (2013) | |||||
書誌情報 |
GAIT & POSTURE 巻 38, 号 4, p. 1054-1057, 発行日 2013-09 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The gait cycle is continuous, but for practical reasons one is often forced to analyze one or only a few adjacent cycles, for example in non-treadmill laboratory investigations and in fossilized footprint analysis. The nature of variability in long-term gait cycle dynamics has been well-investigated, but short-term variability, and specifically correlation, which are highly relevant to short gait bouts, have not. We presently tested for step-to-step autocorrelation in a total of 5243 plantar pressure (PP) distributions from ten subjects who walked at 1.1 m/s on an instrumented treadmill. Following spatial foot alignment, data were analyzed both from three points of interest (POI): heel, central metatarsals, and hallux, and for the foot surface as a whole, in a mass-univariate manner. POI results revealed low average step-to-step autocorrelation coefficients (r = 0.327 +/- 0.094; mean +/- st. dev.). Formal statistical testing of the whole-foot r distributions reached significance over an average of only 0.42 +/- 0.52% of the foot's surface, even for a highly conservative uncorrected threshold of p < 0.05. The common assumption, that short gait bouts consist of independent cycles, is therefore not refuted by the present PP results. | |||||
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=23597941 | |||||
関連名称 | 23597941 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.gaitpost.2013.03.016 | |||||
関連名称 | 10.1016/j.gaitpost.2013.03.016 | |||||
権利 | ||||||
権利情報 | Copyright© 2013 Elsevier | |||||
出版タイプ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
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=000325421900088 |