Carregant...
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Llicència de publicació
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/180804
Assessment of trunk flexion in arm reaching tasks with electromyography and smartphone accelerometry in healthy human subjects
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
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.
Descripció
Reproducció del document publicat a: https://doi.org/10.1038/s41598-021-84789-3
Matèries
Matèries (anglès)
Citació
Citació
CASTILLO ESCARIO, Yolanda, KUMRU, Hatice, VALLS SOLÉ, Josep, GARCÍA ALEN, Loreto, VIDAL SAMSÓ, Joan, JANÉ, Raimon. Assessment of trunk flexion in arm reaching tasks with electromyography and smartphone accelerometry in healthy human subjects. _Scientific Reports_. 2021. Vol. 11. [consulta: 26 de febrer de 2026]. ISSN: 2045-2322. [Disponible a: https://hdl.handle.net/2445/180804]