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Analysis of characterizing phases on waveforms – an application to vertical jumps

Richter, Chris ORCID: 0000-0001-6017-1520, O'Connor, Noel E. ORCID: 0000-0002-4033-9135 and Moran, Kieran ORCID: 0000-0003-2015-8967 (2014) Analysis of characterizing phases on waveforms – an application to vertical jumps. Journal of Applied Biomechanics, 30 (2). pp. 316-321. ISSN 1543-2688

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Abstract

The aim of this study is to propose a novel data analysis approach, ‘Analysis of Characterizing Phases’ (ACP), that detects and examines phases of variance within a sample of curves utilizing the time, magnitude and magnitude-time domain; and to compare the findings of ACP to discrete point analysis in identifying performance related factors in vertical jumps. Twenty five vertical jumps were analyzed. Discrete point analysis identified the initial-to-maximum rate of force development (p = .006) and the time from initial-to-maximum force (p = .047) as performance related factors. However, due to inter-subject variability in the shape of the force curves (i.e non-, uni- and bi-modal nature), these variables were judged to be functionally erroneous. In contrast, ACP identified the ability to: apply forces for longer (p < .038), generate higher forces (p < .027) and produce a greater rate of force development (p < .003) as performance related factors. Analysis of Characterizing Phases showed advantages over discrete point analysis in identifying performance related factors because it: (i) analyses only related phases, (ii) analyses the whole data set, (iii) can identify performance related factors that occur solely as a phase, (iv) identifies the specific phase over which differences occur, and (v) analyses the time, magnitude and combined magnitude-time domains.

Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:Human movement; Vertical jumps
Subjects:Medical Sciences > Kinesiology
Medical Sciences > Biomechanics
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Health and Human Performance
Publisher:Human Kinetics
Official URL:http://dx.doi.org/10.1123/jab.2012-0218
Copyright Information:© 2014 Human Kinetics
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:16890
Deposited On:27 Feb 2015 09:27 by Mr Chris Richter . Last Modified 19 Oct 2018 12:40

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