Objective: To verify whether additional manual wheelchair mass above a critical level would produce, during many daily tasks, an increase in physiologic parameters, an increase in the perceived exertion, and a decrease in performance.
Design: A repeated-measurement design.
Setting: Six standardized tests thought to mimic daily activities.
Background: Inverse dynamic methods have been widely used to estimate joint loads during manual wheelchair propulsion. However, the interpretation of 3D net joint moments and powers is not always straightforward. It has been suggested to use joint coordinate systems (expression of joint moment on anatomical axes) and the 3D angle between joint moment and angular velocity vectors (propulsion, resistance or stabilization joint configuration) for a better understanding of joint dynamics.
View Article and Find Full Text PDFThis study attempts to characterise the electromyographic activity and kinematics exhibited during the performance of take-off for a pole vaulting short run-up educational exercise, for different expertise levels. Two groups (experts and novices) participated in this study. Both groups were asked to execute their take-off technique for that specific exercise.
View Article and Find Full Text PDFObjective: To highlight the prevalence of manual and/or powered wheelchair use within the general French population living at home or in institutions, to describe the users and to identify factors determining wheelchair use.
Methods: Data were obtained from national community-based Handicaps-Incapacités-Dépendance surveys on disability and dependency carried out on 2 representative samples of the French population in institutions (n = 15,288) and at home (n = 16,945).
Results: The prevalence of wheelchair use is 62 per 10,000 people living in France.
To increase the sensitivity of Lamb waves to hidden corrosion in aircraft structures, a preliminary step is to understand the phenomena governing this interaction. A hybrid model combining a finite element approach and a modal decomposition method is used to investigate the interaction of Lamb modes with corrosion pits. The finite element mesh is used to describe the region surrounding the corrosion pits while the modal decomposition method permits to determine the waves reflected and transmitted by the damaged area.
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