Determining Natural Arm Configuration Along Reaching Trajectory

Tao Kang, Stephen Helms Tillery, Jiping He

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Because of the flexibility and redundancy of neuromuscular and skeletal systems, human arm can reach to the same target in space with various arm configurations. However, the arm posture during such movement is generally very consistent with little variation across subjects. To investigate the fundamental mechanism for this observation a model is developed. This paper presents a method to determine the arm posture in a 4 degree-of-freedom (DOF) arm model at each via-point along the trajectory of reaching movement. The predicted data matched experimental data for three joint angles but less consistent for adduction/abduction of shoulder. Further, shoulder adduction/abduction was not correlated linearly with measured data in some conditions. We posit that external constraints imposed on arm configurations should be considered in the algorithm. It is also observed that shoulder adduction/abduction's variability is higher than other joint angles in repeated movements, which may be another reason for the worse prediction.

Original languageEnglish (US)
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
EditorsR.S. Leder
Pages1444-1447
Number of pages4
Volume2
StatePublished - 2003
EventA New Beginning for Human Health: Proceddings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Cancun, Mexico
Duration: Sep 17 2003Sep 21 2003

Other

OtherA New Beginning for Human Health: Proceddings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CountryMexico
CityCancun
Period9/17/039/21/03

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Keywords

  • Arm movements
  • Minimum work
  • Reaching
  • Swivel angle

ASJC Scopus subject areas

  • Bioengineering

Cite this

Kang, T., Helms Tillery, S., & He, J. (2003). Determining Natural Arm Configuration Along Reaching Trajectory. In R. S. Leder (Ed.), Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (Vol. 2, pp. 1444-1447)