Ambulatory measurement of ground reaction forces

Share/Save/Bookmark

Veltink, Peter H. and Liedtke, Christian and Droog, Ed and Kooij van der, Herman (2005) Ambulatory measurement of ground reaction forces. IEEE Transactions on Neural Systems and Rehabilitation Engineering, 13 (3). pp. 423-427. ISSN 1534-4320

[img]
Preview
PDF
553Kb
Abstract:The measurement of ground reaction forces is important in the biomechanical analysis of gait and other motor activities. Many applications require full ambulatory measurement of these forces, but this is not supported by current measurement systems. We propose the use of two six-degrees-of-freedom force and moment sensors under each shoe, which enables the ambulatory measurement of ground reaction forces and centers of pressure (CoP). The feasibility of this method is illustrated by experimental results in a healthy subject, using a force plate as a reference. The ground reaction forces and CoP recordings show good correspondence when they are evaluated for forces above 40 N and when it is simply assumed that the sensors are flat on the ground when they are loaded. The root mean square (rms) difference of the magnitude of the ground reaction force over 12 gait trials was 15/spl plusmn/2 N, corresponding to 1.9/spl plusmn/0.3% of the maximum ground reaction force magnitude. The rms difference of the horizontal component of the ground reaction force was 3/spl plusmn/2 N, corresponding to 0.4/spl plusmn/0.2% of the maximum ground reaction force magnitude and to 2/spl plusmn/1% of the maximum of the horizontal component of the ground reaction force. The rms distance between both CoP recordings is 2.9/spl plusmn/0.4 mm, corresponding to 1.1/spl plusmn/0.2% of the length of the shoe, when the trajectories are optimally aligned.
Item Type:Article
Copyright:© 2005 IEEE
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
Engineering Technology (CTW)
Research Group:
Link to this item:http://purl.utwente.nl/publications/51081
Official URL:http://dx.doi.org/10.1109/TNSRE.2005.847359
Export this item as:BibTeX
EndNote
HTML Citation
Reference Manager

 

Repository Staff Only: item control page

Metis ID: 224045