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Reliability of a new analysis to compute time to stabilization following a single leg drop jump landing in children

Although a number of different methods have been proposed to assess the time to stabilization (TTS), none is reliable in every axis and no tests of this type have been carried out on children. The purpose of this study was thus to develop a new computational method to obtain TTS using a time-scale (...

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Autores principales: García-Massó, Xavier, Skypala, Jiri, Jandacka, Daniel, Estevan, Isaac
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6372174/
https://www.ncbi.nlm.nih.gov/pubmed/30753223
http://dx.doi.org/10.1371/journal.pone.0212124
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author García-Massó, Xavier
Skypala, Jiri
Jandacka, Daniel
Estevan, Isaac
author_facet García-Massó, Xavier
Skypala, Jiri
Jandacka, Daniel
Estevan, Isaac
author_sort García-Massó, Xavier
collection PubMed
description Although a number of different methods have been proposed to assess the time to stabilization (TTS), none is reliable in every axis and no tests of this type have been carried out on children. The purpose of this study was thus to develop a new computational method to obtain TTS using a time-scale (frequency) approach [i.e. continuous wavelet transformation (WAV)] in children. Thirty normally-developed children (mean age 10.16 years, SD = 1.52) participated in the study. Every participant performed 30 single-leg drop jump landings with the dominant lower limb (barefoot) on a force plate from three different heights (15cm, 20cm and 25cm). Five signals were used to compute the TTS: i) Raw, ii) Root mean squared, iii) Sequential average processing, iv) the fitting curve of the signal using an unbounded third order polynomial fit, and v) WAV. The reliability of the TTS was determined by computing both the Intraclass Correlation Coefficient (ICC) and the Standard Error of the Measurement (SEM).In the antero-posterior and vertical axes, the values obtained with the WAV signal from all heights were similar to those obtained by raw, root mean squared and sequential average processing. The values obtained for the medio-lateral axis were relatively small. This WAV provided substantial-to-good ICC values and low SEM for almost all the axes and heights. The results of the current study thus suggest the WAV method could be used to compute overall TTS when studying children’s dynamic postural stability.
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spelling pubmed-63721742019-03-01 Reliability of a new analysis to compute time to stabilization following a single leg drop jump landing in children García-Massó, Xavier Skypala, Jiri Jandacka, Daniel Estevan, Isaac PLoS One Research Article Although a number of different methods have been proposed to assess the time to stabilization (TTS), none is reliable in every axis and no tests of this type have been carried out on children. The purpose of this study was thus to develop a new computational method to obtain TTS using a time-scale (frequency) approach [i.e. continuous wavelet transformation (WAV)] in children. Thirty normally-developed children (mean age 10.16 years, SD = 1.52) participated in the study. Every participant performed 30 single-leg drop jump landings with the dominant lower limb (barefoot) on a force plate from three different heights (15cm, 20cm and 25cm). Five signals were used to compute the TTS: i) Raw, ii) Root mean squared, iii) Sequential average processing, iv) the fitting curve of the signal using an unbounded third order polynomial fit, and v) WAV. The reliability of the TTS was determined by computing both the Intraclass Correlation Coefficient (ICC) and the Standard Error of the Measurement (SEM).In the antero-posterior and vertical axes, the values obtained with the WAV signal from all heights were similar to those obtained by raw, root mean squared and sequential average processing. The values obtained for the medio-lateral axis were relatively small. This WAV provided substantial-to-good ICC values and low SEM for almost all the axes and heights. The results of the current study thus suggest the WAV method could be used to compute overall TTS when studying children’s dynamic postural stability. Public Library of Science 2019-02-12 /pmc/articles/PMC6372174/ /pubmed/30753223 http://dx.doi.org/10.1371/journal.pone.0212124 Text en © 2019 García-Massó et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
García-Massó, Xavier
Skypala, Jiri
Jandacka, Daniel
Estevan, Isaac
Reliability of a new analysis to compute time to stabilization following a single leg drop jump landing in children
title Reliability of a new analysis to compute time to stabilization following a single leg drop jump landing in children
title_full Reliability of a new analysis to compute time to stabilization following a single leg drop jump landing in children
title_fullStr Reliability of a new analysis to compute time to stabilization following a single leg drop jump landing in children
title_full_unstemmed Reliability of a new analysis to compute time to stabilization following a single leg drop jump landing in children
title_short Reliability of a new analysis to compute time to stabilization following a single leg drop jump landing in children
title_sort reliability of a new analysis to compute time to stabilization following a single leg drop jump landing in children
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6372174/
https://www.ncbi.nlm.nih.gov/pubmed/30753223
http://dx.doi.org/10.1371/journal.pone.0212124
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