Effect of Performance Speed on Trunk Movement Control During the Curl-Up Exercise

Trunk exercise speed has significant effects on neuro-mechanical demands; however, the influence of a variety of exercise speeds on motor control of the trunk displacement remains unknown. The aim of this study was to assess the effect of performance speed on trunk motion control during the curl-up...

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Main Authors:	Barbado, David, Elvira, Jose Luis L., Moreno, Francisco J., Vera-Garcia, Francisco J.
Format:	Online
Language:	English
Published:	Akademia Wychowania Fizycznego w Katowicach 2015
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4519219/

id	pubmed-4519219
recordtype	oai_dc
spelling	pubmed-45192192015-08-03 Effect of Performance Speed on Trunk Movement Control During the Curl-Up Exercise Barbado, David Elvira, Jose Luis L. Moreno, Francisco J. Vera-Garcia, Francisco J. Research Article Trunk exercise speed has significant effects on neuro-mechanical demands; however, the influence of a variety of exercise speeds on motor control of the trunk displacement remains unknown. The aim of this study was to assess the effect of performance speed on trunk motion control during the curl-up exercise by analyzing the kinematic variance about the sagittal trajectory. Seventeen subjects volunteered to perform curl-ups at different cadences controlled by a metronome. Standard deviation (SD) and range (RG) of shoulder girdle medial-lateral displacement (SGML) and detrended fluctuation analysis (DFA) of SGML were calculated to examine linear variability and long range autocorrelation of medial-lateral upper trunk displacements, respectively. In addition, SD, RG and DFA of centre of pressure medial-lateral displacement (COPML) were performed to analyze the behavior of the motor system while controlling trunk displacement. Although SD and RG of COPML increased as speed increased, the curl-up cadence did not have significant effects on SD and RG of SGML. These results suggest that although high speed curl-ups challenged participants’ ability to carry out medial-lateral adjustments, an increase of performance speed did not modify the linear variability about the sagittal trajectory. Regarding DFA, the scaling exponent α of SGML and COPML was higher for the fastest movements, mainly in long term fluctuations. Therefore, to maintain the target trajectory, participants used different strategies depending on performance speed. This is to say, there were less trajectory changes when participants performed the fastest exercises. Akademia Wychowania Fizycznego w Katowicach 2015-07-10 /pmc/articles/PMC4519219/ /pubmed/26240646 http://dx.doi.org/10.1515/hukin-2015-0031 Text en © Editorial Committee of Journal of Human Kinetics This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Barbado, David Elvira, Jose Luis L. Moreno, Francisco J. Vera-Garcia, Francisco J.
spellingShingle	Barbado, David Elvira, Jose Luis L. Moreno, Francisco J. Vera-Garcia, Francisco J. Effect of Performance Speed on Trunk Movement Control During the Curl-Up Exercise
author_facet	Barbado, David Elvira, Jose Luis L. Moreno, Francisco J. Vera-Garcia, Francisco J.
author_sort	Barbado, David
title	Effect of Performance Speed on Trunk Movement Control During the Curl-Up Exercise
title_short	Effect of Performance Speed on Trunk Movement Control During the Curl-Up Exercise
title_full	Effect of Performance Speed on Trunk Movement Control During the Curl-Up Exercise
title_fullStr	Effect of Performance Speed on Trunk Movement Control During the Curl-Up Exercise
title_full_unstemmed	Effect of Performance Speed on Trunk Movement Control During the Curl-Up Exercise
title_sort	effect of performance speed on trunk movement control during the curl-up exercise
description	Trunk exercise speed has significant effects on neuro-mechanical demands; however, the influence of a variety of exercise speeds on motor control of the trunk displacement remains unknown. The aim of this study was to assess the effect of performance speed on trunk motion control during the curl-up exercise by analyzing the kinematic variance about the sagittal trajectory. Seventeen subjects volunteered to perform curl-ups at different cadences controlled by a metronome. Standard deviation (SD) and range (RG) of shoulder girdle medial-lateral displacement (SGML) and detrended fluctuation analysis (DFA) of SGML were calculated to examine linear variability and long range autocorrelation of medial-lateral upper trunk displacements, respectively. In addition, SD, RG and DFA of centre of pressure medial-lateral displacement (COPML) were performed to analyze the behavior of the motor system while controlling trunk displacement. Although SD and RG of COPML increased as speed increased, the curl-up cadence did not have significant effects on SD and RG of SGML. These results suggest that although high speed curl-ups challenged participants’ ability to carry out medial-lateral adjustments, an increase of performance speed did not modify the linear variability about the sagittal trajectory. Regarding DFA, the scaling exponent α of SGML and COPML was higher for the fastest movements, mainly in long term fluctuations. Therefore, to maintain the target trajectory, participants used different strategies depending on performance speed. This is to say, there were less trajectory changes when participants performed the fastest exercises.
publisher	Akademia Wychowania Fizycznego w Katowicach
publishDate	2015
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4519219/
_version_	1613253764198694912

Effect of Performance Speed on Trunk Movement Control During the Curl-Up Exercise

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