Journal of Rehabilitation Research & Development (JRRD)

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Volume 48 Number 8, 2011
   Pages 1015 — 1028

Abstract —  Development of custom measurement system for biomechanical evaluation of independent wheelchair transfers

Alicia M. Koontz, PhD, RET;1-3* Yen-Sheng Lin, MS;1,3 Padmaja Kankipati, MS;1,3 Michael L. Boninger, MD;1-4 Rory A. Cooper, PhD1-4

1Human Engineering Research Laboratories, Department of Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA; Departments of 2Bioengineering; 3Rehabilitation Science and Technology, and 4Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, PA

Abstract — This study describes a new custom measurement system designed to investigate the biomechanics of sitting-pivot wheelchair transfers and assesses the reliability of selected biomechanical variables. Variables assessed include horizontal and vertical reaction forces underneath both hands and three-dimensional trunk, shoulder, and elbow range of motion. We examined the reliability of these measures between 5 consecutive transfer trials for 5 subjects with spinal cord injury and 12 nondisabled subjects while they performed a self-selected sitting pivot transfer from a wheelchair to a level bench. A majority of the biomechanical variables demonstrated moderate to excellent reliability (r > 0.6). The transfer measurement system recorded reliable and valid biomechanical data for future studies of sitting-pivot wheelchair transfers.We recommend a minimum of five transfer trials to obtain a reliable measure of transfer technique for future studies.

Key words: activities of daily living, assessment, forces, kinematics, kinetics, range of motion, reliability, spinal cord injury, three-dimensional motion analysis, upper limb.

View HTML  ¦  View PDF  ¦  Contents Vol. 48, No. 8
This article and any supplementary material should be cited as follows:
Koontz AM, Lin YS, Kankipati P, Boninger ML, Cooper RA. Development of custom measurement system for biomechanical evaluation of independent wheelchair transfers. J Rehabil Res Dev. 2011;48(8):1015-28.

Last Reviewed or Updated  Friday, October 14, 2011 9:46 AM

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