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Author

Xiong, Shuping
Ergonomics and Applied Biomechanics Lab
Research Interests
  • Ergonomic product design & development (especially footwear and body-fitted products)

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An indentation apparatus for evaluating discomfort and pain thresholds in conjunction with mechanical properties of foot tissue in vivo

Cited 8 times inthomson ciCited 10 times inthomson ci
Title
An indentation apparatus for evaluating discomfort and pain thresholds in conjunction with mechanical properties of foot tissue in vivo
Author
Xiong, ShupingGoonetilleke, Ravindra S.Witana, Channa P.Rodrigo, W. D. Asanka S.
Keywords
Algometer; Diabetic foot; Discomfort; Discomfort threshold; Foot; Heel compression; Indentation; Pain; Pain threshold; Repeatability; Tissue; Tissue indentor; Tissue mechanical properties; Tissue stiffness
Issue Date
2010
Publisher
JOURNAL REHAB RES & DEV
Citation
JOURNAL OF REHABILITATION RESEARCH AND DEVELOPMENT, v.47, no.7, pp.629 - 641
Abstract
The mechanical properties of human foot tissue in vivo as well as discomfort and pain thresholds are important for various applications In this study, an apparatus for measuring the discomfort and pain thresholds and the mechanical properties of human tissues is presented The apparatus employs a stepper motor that controls the indentation speed, as well as a load cell and potentiometer that determine the corresponding reaction force and tissue deformation (displacement), respectively A LabVIEW program (LabVIEW 8, National Instruments Corporation, Austin, Texas) was developed to control the indentation via a data acquisition card The apparatus can accommodate indentor displacements up to 35 mm and can impart forces up to 150 N at a controlled indentation speed in the range of 0 to 10 mm/s Tests showed that the displacement measurement error is <0 17 min in the nominal range (0 5% in the full scale) and the measurement error of force is <1 6 N in the nominal range (11% in the full scale) Experimental results indicate that the apparatus is reliable and flexible for measuring the mechanical properties of toot tissue in vivo in conjunction with pain and discomfort thresholds
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DOI
http://dx.doi.org/10.1682/JRRD.2009.09.0152
ISSN
0748-7711
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DHE_Journal Papers

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