Richter, Chris 
ORCID: 0000-0001-6017-1520, McGuinness, Kevin ORCID: 0000-0003-1336-6477, Gualano, Leonardo, O'Connor, Noel E. ORCID: 0000-0002-4033-9135 and Moran, Kieran ORCID: 0000-0003-2015-8967
(2013)
Identification of an optimal principal components analysis threshold to describe jump height accurately using vertical ground reaction forces.
In: International Society of Biomechanics, 4-9 Aug 2013, Natal, Brazil.
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Abstract
In functional principal component analysis (fPCA) a threshold is chosen to define the number of retained principal components, which corresponds to the amount of preserved information. A variety of thresholds have been used in previous studies and the chosen threshold is often not evaluated. The aim of this study is to identify the optimal threshold that preserves the information needed to describe a dependent variable accurately. To find an optimal threshold, a neural network was used to predict jump height from vertical ground reaction force curve measures generated by a fPCA at different thresholds. The findings indicate that a threshold from 99% to 99.9% (6-11principal components) is optimal for describing jump height, as these thresholds generated significantly lower jump height prediction errors than other thresholds.
| Item Type: | Conference or Workshop Item (Speech) |
|---|---|
| Event Type: | Conference |
| Refereed: | Yes |
| Uncontrolled Keywords: | Biomechanics; Sports engineering |
| Subjects: | Medical Sciences > Kinesiology Medical Sciences > Sports sciences |
| DCU Faculties and Centres: | DCU Faculties and Schools > Faculty of Science and Health > School of Health and Human Performance Research Initiatives and Centres > CLARITY: The Centre for Sensor Web Technologies |
| Use License: | This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License |
| ID Code: | 17940 |
| Deposited On: | 13 Aug 2013 10:25 by Mr Chris Richter . Last Modified 24 Jan 2019 15:34 |
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- Identification of an optimal principal components analysis threshold to describe jump height accurately using vertical ground reaction forces. (deposited 13 Aug 2013 10:25) [Currently Displayed]
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