Do intermediate- and higher-order principal components contain useful information to detect subtle changes in lower extremity biomechanics during running?

Human Movement Science
Angkoon PhinyomarkReed Ferber

Abstract

Recently, a principal component analysis (PCA) approach has been used to provide insight into running pathomechanics. However, researchers often account for nearly all of the variance from the original data using only the first few, or lower-order principal components (PCs), which are often associated with the most dominant movement patterns. In contrast, intermediate- and higher-order PCs are generally associated with subtle movement patterns and may contain valuable information about between-group variation and specific test conditions. Few investigations have evaluated the utility of intermediate- and higher-order PCs based on observational cross-sectional analyses of different cohorts, and no prior studies have evaluated longitudinal changes in an intervention study. This study was designed to test the utility of intermediate- and higher-order PCs in identifying differences in running patterns between different groups based on three-dimensional bilateral lower-limb kinematics. The results reveal that differences between sex- and age-groups of 128 runners were observed in the lower- and intermediate-order PCs scores (p<0.05) while differences between baseline and following a 6-week muscle strengthening program for 24 runners...Continue Reading

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Citations

Oct 13, 2015·Journal of Biomechanics·Angkoon PhinyomarkReed Ferber
Apr 14, 2016·BMC Musculoskeletal Disorders·Angkoon PhinyomarkReed Ferber
Jun 25, 2016·Human Movement Science·Andrew D Nordin, Janet S Dufek
Oct 28, 2017·Medicine and Science in Sports and Exercise·Aaron FoxJason Bonacci
Jun 20, 2018·Journal of Sports Sciences·Christian A ClermontReed Ferber
Aug 4, 2020·Journal of Motor Behavior·Emily J CushionDaniel J Cleather
Jul 1, 2020·Frontiers in Bioengineering and Biotechnology·Eneida Yuri SudaIsabel C N Sacco
Apr 20, 2018·Journal of medical and biological engineering·Angkoon PhinyomarkReed Ferber
Oct 27, 2020·Journal of Motor Behavior·Karl M Newell, Yeou-Teh Liu

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