Assessment of trunk flexion in arm reaching tasks with electromyography and smartphone accelerometry in healthy human subjects
Castillo-Escario, Yolanda (Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina)
Kumru, Hatice (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol)
Valls-Sole, Josep (Institut d'Investigacions Biomèdiques August Pi i Sunyer)
García-Alén, Loreto (Institut Germans Trias i Pujol. Institut Guttmann)
Vidal, Joan (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol)
Jané Campos, Raimon (Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina)

Data:	2021
Resum:	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.
Ajuts:	Agencia Estatal de Investigación RTI2018098472-B-I00
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	Scientific reports, Vol. 11 (march 2021) , ISSN 2045-2322

DOI: 10.1038/s41598-021-84789-3
PMID: 33686167

13 p, 4.4 MB

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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències de la salut i biociències > Institut d'Investigació en Ciencies de la Salut Germans Trias i Pujol (IGTP)
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