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Wristband-placed physical activity monitors, as a convenient means for counting walking steps, assessing movement, and estimating energy expenditure, are widely used in daily life. There are many consumer-based wristband monitors on the market, but there is not an unified method to compare their performance. In this paper, we designed a series of experiments testing step counting performance under...
Because of the limited space and enormous forces in the human foot, researchers generally simplified the foot as a rigid body in the development of lower extremity exoskeletons and biped humanoid robots, which led to unsatisfying performance on flexibility and auto-stability. In this paper, we propose a novel parallel mechanism with seven degrees of freedom (DOF) to realize the main possible movements...
Recently, trans-femoral amputees must regain moving pattern by refined rehabilitation program using loads applied on the lower limb. On the other hand, understanding those loads and kinetic variables is essential for gait analysis based on the biomechanical consideration of trans-femoral amputees. However, conventional gait measurement systems cannot measure long continuous walking motions. In this...
In walking analysis, which is one useful method for efficient physical rehabilitation, the ground reaction force, the center of pressure, and the body orientation data are measured during walking. In the past, these data were measured by a 3D motion analysis system consisting of high-speed cameras and force plates, which must be installed in the floor. However, a conventional 3D motion analysis system...
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...
Human foot is a complex musculoskeletal system. As it is impossible to directly measure the force of muscle attaching with limbs, a new quantitative method for dynamics analysis of human ankle muscle forces is presented by using the AnyBody Modeling System and a developed wearable motion and ground reaction force (GRF) sensor system. The sensor system can be used to continuously measure human motion...
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