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An analysis of uncertainties in inverse dynamics solutions for gait.

Authors
Reimer-R; Hsiao-Wecksler-ET; Zhang-X
Source
ISB XXth Congress - ASB 29th Annual Meeting, July 31- August 5, 2005, Cleveland, Ohio. Cleveland, OH: International Society of Biomechanics, 2005 Jul; :414
NIOSHTIC No.
20038387
Abstract
Inverse dynamics is a powerful tool for analysis of human movement [1], but is subject to error from various sources; these include estimates of segmental properties [2], skin artifacts [3], inaccuracies in center of pressure (COP) locations [4], and inherent noise in instrumentation. Previous studies have focused on the effect of only one or two error sources [2, 3, 4]. The combined effect of all sources of error on the calculated joint torques has not been investigated. A comprehensive analysis can provide a thorough understanding of uncertainties in inverse dynamics solutions. It can also lead to more effective error controls and improved algorithms for error correction such as the variance-weighted least-squares method [5]. This study seeks to provide a comprehensive analysis of most sources of error in inverse dynamics and their effects on computed lower extremity joint torques during gait.
Keywords
Muscle-physiology; Musculoskeletal-system; Physical-capacity; Physical-stress; Physiological-factors; Ergonomics; Biomechanics; Biodynamics
Publication Date
20050731
Document Type
Abstract
Email Address
xudong@uiuc.edu
Funding Type
Grant
Fiscal Year
2005
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-K01-OH-007838
Priority Area
Disease and Injury: Musculoskeletal Disorders of the Upper Extremities
Source Name
ISB XXth Congress - ASB 29th Annual Meeting, July 31- August 5, 2005, Cleveland, Ohio
State
OR; IL
Performing Organization
University of Illinois Urbana-Champaign
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