Assessment of trunk flexion in arm reaching tasks with electromyography and smartphone accelerometry in healthy human subjects

Abstract Trunk stability is essential to maintain upright posture and support functional movements. In this study, we aimed to characterize the muscle activity and movement patterns of trunk flexion during an arm reaching task in sitting healthy subjects and investigate whether trunk stability is af...

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Autores principales:	Yolanda Castillo-Escario, Hatice Kumru, Josep Valls-Solé, Loreto García-Alen, Joan Vidal, Raimon Jané
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e2b1b3bbf2514658a5c8237ae73c76b3
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spelling	oai:doaj.org-article:e2b1b3bbf2514658a5c8237ae73c76b32021-12-02T11:35:58ZAssessment of trunk flexion in arm reaching tasks with electromyography and smartphone accelerometry in healthy human subjects10.1038/s41598-021-84789-32045-2322https://doaj.org/article/e2b1b3bbf2514658a5c8237ae73c76b32021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84789-3https://doaj.org/toc/2045-2322Abstract Trunk stability is essential to maintain upright posture and support functional movements. In this study, we aimed to characterize the muscle activity and movement patterns of trunk flexion during an arm reaching task in sitting healthy subjects and investigate whether trunk stability is affected by a startling acoustic stimulus (SAS). For these purposes, we calculated the electromyographic (EMG) onset latencies and amplitude parameters in 8 trunk, neck, and shoulder muscles, and the tilt angle and movement features from smartphone accelerometer signals recorded during trunk bending in 33 healthy volunteers. Two-way repeated measures ANOVAs were applied to examine the effects of SAS and target distance (15 cm vs 30 cm). We found that SAS markedly reduced the response time and EMG onset latencies of all muscles, without changing neither movement duration nor muscle recruitment pattern. Longer durations, higher tilt angles, and higher EMG amplitudes were observed at 30 cm compared to 15 cm. The accelerometer signals had a higher frequency content in SAS trials, suggesting reduced movement control. The proposed measures have helped to establish the trunk flexion pattern in arm reaching in healthy subjects, which could be useful for future objective assessment of trunk stability in patients with neurological affections.Yolanda Castillo-EscarioHatice KumruJosep Valls-SoléLoreto García-AlenJoan VidalRaimon JanéNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yolanda Castillo-Escario Hatice Kumru Josep Valls-Solé Loreto García-Alen Joan Vidal Raimon Jané Assessment of trunk flexion in arm reaching tasks with electromyography and smartphone accelerometry in healthy human subjects
description	Abstract Trunk stability is essential to maintain upright posture and support functional movements. In this study, we aimed to characterize the muscle activity and movement patterns of trunk flexion during an arm reaching task in sitting healthy subjects and investigate whether trunk stability is affected by a startling acoustic stimulus (SAS). For these purposes, we calculated the electromyographic (EMG) onset latencies and amplitude parameters in 8 trunk, neck, and shoulder muscles, and the tilt angle and movement features from smartphone accelerometer signals recorded during trunk bending in 33 healthy volunteers. Two-way repeated measures ANOVAs were applied to examine the effects of SAS and target distance (15 cm vs 30 cm). We found that SAS markedly reduced the response time and EMG onset latencies of all muscles, without changing neither movement duration nor muscle recruitment pattern. Longer durations, higher tilt angles, and higher EMG amplitudes were observed at 30 cm compared to 15 cm. The accelerometer signals had a higher frequency content in SAS trials, suggesting reduced movement control. The proposed measures have helped to establish the trunk flexion pattern in arm reaching in healthy subjects, which could be useful for future objective assessment of trunk stability in patients with neurological affections.
format	article
author	Yolanda Castillo-Escario Hatice Kumru Josep Valls-Solé Loreto García-Alen Joan Vidal Raimon Jané
author_facet	Yolanda Castillo-Escario Hatice Kumru Josep Valls-Solé Loreto García-Alen Joan Vidal Raimon Jané
author_sort	Yolanda Castillo-Escario
title	Assessment of trunk flexion in arm reaching tasks with electromyography and smartphone accelerometry in healthy human subjects
title_short	Assessment of trunk flexion in arm reaching tasks with electromyography and smartphone accelerometry in healthy human subjects
title_full	Assessment of trunk flexion in arm reaching tasks with electromyography and smartphone accelerometry in healthy human subjects
title_fullStr	Assessment of trunk flexion in arm reaching tasks with electromyography and smartphone accelerometry in healthy human subjects
title_full_unstemmed	Assessment of trunk flexion in arm reaching tasks with electromyography and smartphone accelerometry in healthy human subjects
title_sort	assessment of trunk flexion in arm reaching tasks with electromyography and smartphone accelerometry in healthy human subjects
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e2b1b3bbf2514658a5c8237ae73c76b3
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Assessment of trunk flexion in arm reaching tasks with electromyography and smartphone accelerometry in healthy human subjects

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