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An explorative investigation of functional differences in plantar center of pressure of four foot types using sample entropy method

Zhanyong Mei and Kamen Ivanov have contributed equally to this work. Gait; Foot type; Plantar pressure; Biomechanics 1 Introduction Foot problems prevail among almost all ethnic and age groups [6, 13, 16 ... processing, and gait analysis. Kamen Ivanov obtained B.Sc. degree from the Technical University of Sofia, Bulgaria in 2003. He is currently working towards a Ph.D. degree in Biomedical Electronics Engineering

A novel method based on two cameras for accurate estimation of arterial oxygen saturation

Background Photoplethysmographic imaging (PPGi) that is based on camera allows acquiring photoplethysmogram and measuring physiological parameters such as pulse rate, respiration rate and perfusion level. It has also shown potential for estimation of arterial oxygen saturation (SaO2). However, there are some technical limitations such as optical shunting, different camera...

Sample entropy characteristics of movement for four foot types based on plantar centre of pressure during stance phase

Background Motion characteristics of CoP (Centre of Pressure, the point of application of the resultant ground reaction force acting on the plate) are useful for foot type characteristics detection. To date, only few studies have investigated the nonlinear characteristics of CoP velocity and acceleration during the stance phase. The aim of this study is to investigate whether CoP...

Balance and knee extensibility evaluation of hemiplegic gait using an inertial body sensor network

Background Most hemiplegic patients have difficulties in their balance and posture control while walking because of the asymmetrical posture and the abnormal body balance. The assessment of rehabilitation of hemiplegic gait is usually made by doctors using clinical scale, but it is difficult and could not be used frequently. It is therefore needed to quantitatively analyze the...