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It has been shown that 1D confidence intervals (CIs) are biased when based on OD statistical procedures, and the non-parametric 1D bootstrap CI has emerged in the Biomechanics literature as a viable solution. The primary purpose of this paper was to clarify that, for 1D biomechanics datasets, the distinction between OD and 1D methods is much more important than the distinction between parametric and non-parametric procedures. A secondary purpose was to demonstrate that a parametric equivalent to the 1D bootstrap exists in the form of a random field theory (RFT) correction for multiple comparisons. To emphasize these points we analyzed six datasets consisting of force and kinematic trajectories in one-sample, paired, two-sample and regression designs. Results showed, first, that the 1D bootstrap and other 1D non-parametric CIs were qualitatively identical to RFT CIs, and all were very different from OD CIs. Second, 10 parametric and 1D non-parametric hypothesis testing results were qualitatively identical for all six datasets. Last, we highlight the limitations of 1D CIs by demonstrating that they are complex, design-dependent, and thus non-generalizable. These results suggest that (i) analyses of 1D data based on OD models of randomness are generally biased unless one explicitly identifies OD variables before the experiment, and (ii) parametric and non-parametric 1D hypothesis testing provide an unambiguous framework for analysis when one\u0027s hypothesis explicitly or implicitly pertains to whole 1D trajectories. (C) 2015 Elsevier Ltd. 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Zero- vs. one-dimensional, parametric vs. non-parametric, and confidence interval vs. hypothesis testing procedures in one-dimensional biomechanical trajectory analysis.
http://hdl.handle.net/10091/00018575
http://hdl.handle.net/10091/00018575c4521bcc-ea37-4b27-857a-6585c6bb696e
名前 / ファイル | ライセンス | アクション |
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Zero-_vs._one-dimensional (4.4 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2015-12-17 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Zero- vs. one-dimensional, parametric vs. non-parametric, and confidence interval vs. hypothesis testing procedures in one-dimensional biomechanical trajectory analysis. | |||||
言語 | ||||||
言語 | eng | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.jbiomech.2015.02.051 | |||||
関連名称 | 10.1016/j.jbiomech.2015.02.051 | |||||
キーワード | ||||||
主題 | Bootstrap confidence interval, Kinematics, Ground reaction force, 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 | ||||||
内容記述タイプ | Other | |||||
内容記述 | JOURNAL OF BIOMECHANICS. 48(7):1277-1285 (2015) | |||||
書誌情報 |
en : Journal of biomechanics 巻 48, 号 7, p. 1277-1285, 発行日 2015-05-01 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Biomechanical processes are often manifested as one-dimensional (1D) trajectories. It has been shown that 1D confidence intervals (CIs) are biased when based on 0D statistical procedures, and the non-parametric 1D bootstrap CI has emerged in the Biomechanics literature as a viable solution. The primary purpose of this paper was to clarify that, for 1D biomechanics datasets, the distinction between 0D and 1D methods is much more important than the distinction between parametric and non-parametric procedures. A secondary purpose was to demonstrate that a parametric equivalent to the 1D bootstrap exists in the form of a random field theory (RFT) correction for multiple comparisons. To emphasize these points we analyzed six datasets consisting of force and kinematic trajectories in one-sample, paired, two-sample and regression designs. Results showed, first, that the 1D bootstrap and other 1D non-parametric CIs were qualitatively identical to RFT CIs, and all were very different from 0D CIs. Second, 1D parametric and 1D non-parametric hypothesis testing results were qualitatively identical for all six datasets. Last, we highlight the limitations of 1D CIs by demonstrating that they are complex, design-dependent, and thus non-generalizable. These results suggest that (i) analyses of 1D data based on 0D models of randomness are generally biased unless one explicitly identifies 0D variables before the experiment, and (ii) parametric and non-parametric 1D hypothesis testing provide an unambiguous framework for analysis when one׳s hypothesis explicitly or implicitly pertains to whole 1D trajectories. | |||||
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/pubmed/?term=25817475 | |||||
関連名称 | 25817475 | |||||
権利 | ||||||
権利情報 | © 2015 Elsevier Ltd. All rights reserved. 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 | ||||||
表示名 | Web of Science | |||||
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