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Local Dynamic Stability Associated With Load Carrying, Jian Liu, Thurmon E. Lockhart
Local Dynamic Stability Associated With Load Carrying, Jian Liu, Thurmon E. Lockhart
Computer Sciences and Electrical Engineering Faculty Research
Objectives: Load carrying tasks are recognized as one of the primary occupational factors leading to slip and fall injuries. Nevertheless, the mechanisms associated with load carrying and walking stability remain illusive. The objective of the current study was to apply local dynamic stability measure in walking while carrying a load, and to investigate the possible adaptive gait stability changes.
Methods: Current study involved 25 young adults in a biomechanics research laboratory. One tri-axial accelerometer was used to measure three-dimensional low back acceleration during continuous treadmill walking. Local dynamic stability was quantified by the maximum Lyapunov exponent (maxLE) from a nonlinear …
Fall Risk Assessments Based On Postural And Dynamic Stability Using Inertial Measurement Unit, Jian Liu, Xiaoyue Zhang, Thurmon E. Lockhart
Fall Risk Assessments Based On Postural And Dynamic Stability Using Inertial Measurement Unit, Jian Liu, Xiaoyue Zhang, Thurmon E. Lockhart
Computer Sciences and Electrical Engineering Faculty Research
Objectives: Slip and fall accidents in the workplace are one of the top causes of work related fatalities and injuries. Previous studies have indicated that fall risk was related to postural and dynamic stability. However, the usage of this theoretical relationship was limited by laboratory based measuring instruments. The current study proposed a new method for stability assessment by use of inertial measurement units (IMUs).
Methods: Accelerations at different body parts were recorded by the IMUs. Postural and local dynamic stability was assessed from these measures and compared with that computed from the traditional method. Results: The results demonstrated: 1) …