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Castillo 2021 Sci Rep_Assessment of trunk flexion in arm reaching tasks with EMG and smarphones in healthy.pdf (4.36 MB)

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Published version

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2021-03-08

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cc by (c) Castillo Escario, Yolanda et al, 2021
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/180804

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

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https://doi.org/10.1038/s41598-021-84789-3

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.

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Reproducció del document publicat a: https://doi.org/10.1038/s41598-021-84789-3

Subject

Enginyeria biomèdica, Motricitat

Subject (English)

Biomedical engineering, Motor ability

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Articles publicats en revistes (Institut de Bioenginyeria de Catalunya (IBEC))
Articles publicats en revistes (IDIBAPS: Institut d'investigacions Biomèdiques August Pi i Sunyer)

Citation

CASTILLO ESCARIO, Yolanda, et al. Assessment of trunk flexion in arm reaching tasks with electromyography and smartphone accelerometry in healthy human subjects. Scientific Reports. 2021. Vol. 11. ISSN 2045-2322. [consulted: 14 of August of 2026]. Available at: https://hdl.handle.net/2445/180804

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