The purpose of this study was to evaluate the relationship between forceplate inaccuracies and joint torques during running. Instrumented gait analysis data were collected on a single subject running above ground. A Monte Carlo analysis was performed using 60 simulations. In each simulation, joint torques were computed as the ground reaction force (GRF) data were perturbed. Errors in joint torques were larger for proximal joints compared to the distal joints. These errors in joint torques were due more to inaccuracies in the GRF magnitude than the center of pressure (COP) measurements. Clinically, these results may be used to determine a priori the forceplate accuracy needed to measure a desired difference in joint torque between patient populations.
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November 2016
Research-Article
The Sensitivity of Joint Torques During Running to Forceplate Data Error
Anne Schmitz,
Anne Schmitz
Department of Mechanical Engineering,
Gannon University,
109 University Square,
Erie, PA 16541
e-mail: schmitz005@gannon.edu
Gannon University,
109 University Square,
Erie, PA 16541
e-mail: schmitz005@gannon.edu
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Jaclyn Norberg
Jaclyn Norberg
Department of Sport and Movement Science,
Salem State University,
352 Lafayette Street,
Salem, MA 01970
e-mail: Jnorberg@salemstate.edu
Salem State University,
352 Lafayette Street,
Salem, MA 01970
e-mail: Jnorberg@salemstate.edu
Search for other works by this author on:
Anne Schmitz
Department of Mechanical Engineering,
Gannon University,
109 University Square,
Erie, PA 16541
e-mail: schmitz005@gannon.edu
Gannon University,
109 University Square,
Erie, PA 16541
e-mail: schmitz005@gannon.edu
Jaclyn Norberg
Department of Sport and Movement Science,
Salem State University,
352 Lafayette Street,
Salem, MA 01970
e-mail: Jnorberg@salemstate.edu
Salem State University,
352 Lafayette Street,
Salem, MA 01970
e-mail: Jnorberg@salemstate.edu
1Corresponding author.
Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received July 14, 2015; final manuscript received June 3, 2016; published online June 30, 2016. Assoc. Editor: Xiaopeng Zhao.
J. Dyn. Sys., Meas., Control. Nov 2016, 138(11): 111001 (5 pages)
Published Online: June 30, 2016
Article history
Received:
July 14, 2015
Revised:
June 3, 2016
Citation
Schmitz, A., and Norberg, J. (June 30, 2016). "The Sensitivity of Joint Torques During Running to Forceplate Data Error." ASME. J. Dyn. Sys., Meas., Control. November 2016; 138(11): 111001. https://doi.org/10.1115/1.4033829
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