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Fall-related injuries are a serious public health issue among elderly people in developed countries. More than a third of elderly people fall each year. When an elderly person falls, the social costs will be high since falls can yield bone fractures and even death. The gait of the elderly is strongly associated with multiple factors including fatigue, balance, and speed. People at high risk of falls...
In critically ill neonates, the risk associated with rapid changes in oxygen saturation is high where peripheral perfusion may drop below the minimum required for tissue oxygenation and cellular respiration. Using pulse oximetry is appealing because it is non-invasive and easy to use. However, optimal pulse oximetry accuracy depends on the selection of a monitoring site characterized by good perfusion...
It introduces the study on the extraction of the shoe-lasts contour from the scanned date set of a shoe-last surface automatically. A digital shoe-last model was formed with a set of plane curves. Salient points on all the curves were detected on the basis of their curvatures and were used to form the contour of the shoe last. The three-points-circle method was used to determine the curvatures, and...
Falls in the elderly are a major problem worldwide, with enormous associated societal costs. Deficits in balance and postural control have long been associated with falls risk in elderly adults. The gold standard for quantitative assessment of human balance in a clinical setting is the force plate which is highly expensive, non-portable and requires specialized personnel to operate. The present study...
In order to implement an unobstructed assessment of walking gait, we proposed a mobile force plate and three-dimensional motion analysis system (M3D) to measure triaxial ground reaction forces (GRF) and three-dimensional orientations of feet. To test accuracy of the new measurement system, verification experiments by using reference measurements of a commercially available measurement system were...
Diffuse optical imaging of the peripheral vascular reactivity is implemented at the major arteries of the foot. Transmitted light intensities are recorded in response to vascular occlusions induced by pressure cuffs. These dynamic measurements promise to help identify various peripheral vascular diseases.
The duration of a sit-to-stand (SiSt) transfer is a representative measure of a person's status of physical mobility. This paper measured the duration unobtrusively and automatically using a pressure sensor array under a bed mattress and a floor plate beside the bed. Pressure sequences were extracted from frames of sensor data measuring bed and floor pressure over time. The start time was determined...
Measurement of interface pressure between the foot and shoe underpins a number of important applications in gait analysis. Abnormal pressure may indicate instability in gait, risks of ulceration development especially in diabetic foot as well as many other biomedical diagnostic applications. Since the currently available foot pressure sensors exhibit many limitations while the opportunity offered...
Measurement of the foot and shoe interface pressure underpins a number of important applications. Abnormal pressure may indicate instability in gait, risks of diabetic ulceration and many other biomedical and sports applications. As the current foot pressure sensors in the market exhibit many limitations, a new sensor design based on the more promising MEMS technology was therefore explored. As such,...
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