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Two-way ANOVA for scalar trajectories, with experimental evidence of non-phasic interactions
http://hdl.handle.net/10091/00018624
http://hdl.handle.net/10091/00018624d0af0d14-b274-444a-9fae-18dbd02e270d
| 名前 / ファイル | ライセンス | アクション |
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Two-way_ANOVA_scalar_trajectories_experimental_evidence.pdf (1.4 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||
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| 公開日 | 2016-02-04 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Two-way ANOVA for scalar trajectories, with experimental evidence of non-phasic interactions | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| DOI | ||||||||||||
| 関連識別子 | https://doi.org/10.1016/j.jbiomech.2014.10.013 | |||||||||||
| 関連名称 | 10.1016/j.jbiomech.2014.10.013 | |||||||||||
| キーワード | ||||||||||||
| 主題 | Kinematics, Statistical parametric mapping, Random field theory, Time series analysis | |||||||||||
| 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.
× Vanrenterghem, Jos
× Robinson, Mark A.
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| 出版者 | ||||||||||||
| 出版者 | ELSEVIER SCI LTD | |||||||||||
| 引用 | ||||||||||||
| 内容記述 | JOURNAL OF BIOMECHANICS. 48(1):186-189 (2015) | |||||||||||
| 書誌情報 |
JOURNAL OF BIOMECHANICS 巻 48, 号 1, p. 186-189, 発行日 2015-01-02 |
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| 抄録 | ||||||||||||
| 内容記述 | Kinematic and force trajectories are often normalized in time, with mean and variance summary statistic trajectories reported. It has been shown elsewhere, for simple one-factor experiments, that statistical testing can be conducted directly on those summary statistic trajectories using Random Field Theory (RFT). This technical note describes how RFT extends to two-factor designs, and how bizarre "non-phasic interactions" can occur in multi-factor experiments. We reanalyzed a public dataset detailing stance phase knee flexion during walking in (a) patellofemoral pain vs. controls, and (b) females vs. males using both a full model (with interaction effect) and a main-effects-only model. In both models the main effect of PAIN failed to reach significance at alpha=0.05. The main effect of GENDER reached significance over 5-40% stance (p=0.0005), but only for the full model. The interaction effect (in the full model) reached significance over 0-15% of stance (p=0.030), and resulted from greater flexion in females but decreased flexion in males in PFP vs. controls. Thus there was a non-phasic interaction in which a non-significant interaction (over 20-40% stance) suppressed the main effect of GENDER. Similarly, if we had only analyzed 20-40% stance, we would have committed Type II error by failing to reject the null PAIN-GENDER interaction hypothesis. The possible presence of non-phasic interactions implies that trajectory analyses must be conducted at the whole-trajectory level, because a failure to do so will generally miss non-phasic interactions if present. (C) 2014 Elsevier Ltd. All rights reserved. | |||||||||||
| 資源タイプ（コンテンツの種類） | ||||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||
| 収録物識別子 | 0021-9290 | |||||||||||
| 書誌レコードID | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AA00694200 | |||||||||||
| 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=25458576 | |||||||||||
| 関連名称 | 25458576 | |||||||||||
| 権利 | ||||||||||||
| 権利情報 | © 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | |||||||||||
| 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 | ||||||||||||
| URL | http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000348336200027 | |||||||||||
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Cite as
Pataky, Todd C., Vanrenterghem, Jos, Robinson, Mark A., 2015, Two-way ANOVA for scalar trajectories, with experimental evidence of non-phasic interactions: ELSEVIER SCI LTD, 186–189 p.
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