Effects of a Dynamic Chair on Chair Seat Motion and Trunk Muscle Activity during Office Tasks and Task Transitions
Autor: | Corina Nüesch; Jan-Niklas Kreppke; Annegret Mündermann; Lars Donath |
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Sprache: | Englisch |
Veröffentlicht: |
2018 |
Quelle: | Directory of Open Access Journals: DOAJ Articles |
Online Zugang: |
https://www.mdpi.com/1660-4601/15/12/2723 https://doaj.org/toc/1660-4601 1660-4601 doi:10.3390/ijerph15122723 https://doaj.org/article/57cc6622b72c4bb78add5bc9ecbb4d5b https://doi.org/10.3390/ijerph15122723 https://doaj.org/article/57cc6622b72c4bb78add5bc9ecbb4d5b |
Erfassungsnummer: | ftdoajarticles:oai:doaj.org/article:57cc6622b72c4bb78add5bc9ecbb4d5b |
Zusammenfassung
Employing dynamic office chairs might increase the physical (micro-) activity during prolonged office sitting. We investigated whether a dynamic BioSwing ® chair increases chair sway and alters trunk muscle activation. Twenty-six healthy young adults performed four office tasks (reading, calling, typing, hand writing) and transitions between these tasks while sitting on a dynamic and on a static office chair. For all task-transitions, chair sway was higher in the dynamic condition ( p < 0.05). Muscle activation changes were small with lower mean activity of the left obliquus internus during hand writing ( p = 0.07), lower mean activity of the right erector spinae during the task-transition calling to hand writing ( p = 0.036), and higher mean activity of the left erector spinae during the task-transition reading to calling ( p = 0.07) on the dynamic chair. These results indicate that an increased BioSwing ® chair sway only selectively alters trunk muscle activation. Adjustments of chair properties (i.e., swinging elements, foot positioning) are recommended.