Sit-to-stand-and-walk from 120% knee height: A novel approach to assess dynamic postural control independent of lead-limb
Journal article
Jones, GD, James, DC, Thacker, M and Green, DA (2016). Sit-to-stand-and-walk from 120% knee height: A novel approach to assess dynamic postural control independent of lead-limb. Journal of Visualized Experiments. 2016 (114). https://doi.org/10.3791/54323
Authors | Jones, GD, James, DC, Thacker, M and Green, DA |
---|---|
Abstract | © 2016 Journal of Visualized Experiments.Individuals with sensorimotor pathology e.g., stroke have difficulty executing the common task of rising from sitting and initiating gait (sit-to-walk: STW). Thus, in clinical rehabilitation separation of sit-to-stand and gait initiation - termed sit-to-stand-and-walk (STSW) - is usual. However, a standardized STSW protocol with a clearly defined analytical approach suitable for pathological assessment has yet to be defined. Hence, a goal-orientated protocol is defined that is suitable for healthy and compromised individuals by requiring the rising phase to be initiated from 120% knee height with a wide base of support independent of lead limb. Optical capture of three-dimensional (3D) segmental movement trajectories, and force platforms to yield two-dimensional (2D) center-of-pressure (COP) trajectories permit tracking of the horizontal distance between COP and whole-body-center-of-mass (BCOM), the decrease of which increases positional stability but is proposed to represent poor dynamic postural control. BCOM-COP distance is expressed with and without normalization to subjects' leg length. Whilst COP-BCOM distances vary through STSW, normalized data at the key movement events of seat-off and initial toe-off (TO1) during steps 1 and 2 have low intra and inter subject variability in 5 repeated trials performed by 10 young healthy individuals. Thus, comparing COP-BCOM distance at key events during performance of an STSW paradigm between patients with upper motor neuron injury, or other compromised patient groups, and normative data in young healthy individuals is a novel methodology for evaluation of dynamic postural stability. |
Year | 2016 |
Journal | Journal of Visualized Experiments |
Journal citation | 2016 (114) |
Publisher | Journal of Visualized Experiments |
ISSN | 1940-087X |
Digital Object Identifier (DOI) | https://doi.org/10.3791/54323 |
Publication dates | |
30 Aug 2016 | |
Publication process dates | |
Deposited | 24 Oct 2016 |
Accepted | 25 Jul 2016 |
Accepted author manuscript | License File Access Level Open |
https://openresearch.lsbu.ac.uk/item/87297
Download files
142
total views198
total downloads1
views this month1
downloads this month