An analysis of uncertainties in inverse dynamics solutions for gait.
Reimer-R; Hsiao-Wecksler-ET; Zhang-X
ISB XXth Congress - ASB 29th Annual Meeting, July 31- August 5, 2005, Cleveland, Ohio. Cleveland, OH: International Society of Biomechanics, 2005 Jul; :414
Inverse dynamics is a powerful tool for analysis of human movement , but is subject to error from various sources; these include estimates of segmental properties , skin artifacts , inaccuracies in center of pressure (COP) locations , 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 . 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.
Muscle-physiology; Musculoskeletal-system; Physical-capacity; Physical-stress; Physiological-factors; Ergonomics; Biomechanics; Biodynamics
Disease and Injury: Musculoskeletal Disorders of the Upper Extremities
ISB XXth Congress - ASB 29th Annual Meeting, July 31- August 5, 2005, Cleveland, Ohio
University of Illinois Urbana-Champaign