Between-day reliability of three-dimensional motion analysis of the trunk : a comparison of marker based protocols

Rast, Fabian; Graf, Eveline; Meichtry, André; Kool, Jan; Bauer, Christoph

doi:10.1016/j.jbiomech.2016.02.030

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Between-day reliability of three-dimensional motion analysis of the trunk : a comparison of marker based protocols
Authors:	Rast, Fabian Graf, Eveline Meichtry, André Kool, Jan Bauer, Christoph
DOI:	10.1016/j.jbiomech.2016.02.030
Published in:	Journal of Biomechanics
Volume(Issue):	49
Issue:	5
Page(s):	807
Pages to:	811
Issue Date:	21-Mar-2016
Publisher / Ed. Institution:	Elsevier
ISSN:	0021-9290 1873-2380
Language:	English
Subjects:	Kinematics; Motion analysis; Spine; Torso; Adult; Algorithms; Biomechanical Phenomena; Female; Humans; Male; Movement; Posture; Reproducibility of Results; Rotation; Torso; Young Adult
Subject (DDC):	610: Medicine and health
Abstract:	Motion capture of the trunk using three-dimensional optoelectronic systems and skin markers placed on anatomical landmarks is prone to error due to marker placement, thus decreasing between-day reliability. The influence of these errors on angular output might be reduced by using an overdetermined number of markers and optimization algorithms, or by defining the neutral position using a reference trial. The purpose of this study was to quantify and compare the between-day reliability of trunk kinematics, when using these methods. In each of two sessions, 20 subjects performed four movement tasks. Trunk kinematics were established through the plug-in-gait protocol, the point cloud optimization algorithm, and by defining upright standing as neutral position. Between-day reliability was analyzed using generalizability theory and quantified by indexes of dependability. Across all movement tasks, none of the methods was superior in terms of between-day reliability. The point cloud algorithm did not improve between-day reliability, but did result in 24.3% greater axial rotation angles. The definition of neutral position by means of a reference trial revealed 5.8% higher indexes of dependability for lateral bending and axial rotation angles, but 13.7% smaller indexes of dependability for flexion angles. Further, using a reference trial resulted in 8.3° greater trunk flexion angles. Therefore, the selection of appropriate marker placement and the corresponding calculation of angular output are dependent on the movement task and the underlying research question.
URI:	https://digitalcollection.zhaw.ch/handle/11475/8957
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Health Sciences
Appears in collections:	Publikationen Gesundheit

Files in This Item:

There are no files associated with this item.

Show full item record

Rast, F., Graf, E., Meichtry, A., Kool, J., & Bauer, C. (2016). Between-day reliability of three-dimensional motion analysis of the trunk : a comparison of marker based protocols. Journal of Biomechanics, 49(5), 807–811. https://doi.org/10.1016/j.jbiomech.2016.02.030

Rast, F. et al. (2016) ‘Between-day reliability of three-dimensional motion analysis of the trunk : a comparison of marker based protocols’, Journal of Biomechanics, 49(5), pp. 807–811. Available at: https://doi.org/10.1016/j.jbiomech.2016.02.030.

F. Rast, E. Graf, A. Meichtry, J. Kool, and C. Bauer, “Between-day reliability of three-dimensional motion analysis of the trunk : a comparison of marker based protocols,” Journal of Biomechanics, vol. 49, no. 5, pp. 807–811, Mar. 2016, doi: 10.1016/j.jbiomech.2016.02.030.

RAST, Fabian, Eveline GRAF, André MEICHTRY, Jan KOOL und Christoph BAUER, 2016. Between-day reliability of three-dimensional motion analysis of the trunk : a comparison of marker based protocols. Journal of Biomechanics. 21 März 2016. Bd. 49, Nr. 5, S. 807–811. DOI 10.1016/j.jbiomech.2016.02.030

Rast, Fabian, Eveline Graf, André Meichtry, Jan Kool, and Christoph Bauer. 2016. “Between-Day Reliability of Three-Dimensional Motion Analysis of the Trunk : A Comparison of Marker Based Protocols.” Journal of Biomechanics 49 (5): 807–11. https://doi.org/10.1016/j.jbiomech.2016.02.030.

Rast, Fabian, et al. “Between-Day Reliability of Three-Dimensional Motion Analysis of the Trunk : A Comparison of Marker Based Protocols.” Journal of Biomechanics, vol. 49, no. 5, Mar. 2016, pp. 807–11, https://doi.org/10.1016/j.jbiomech.2016.02.030.