This paper presents an experimental study of the flexion-extension movement of the human lower limb joints. Measurements were performed on a group of fourteen healthy subjects, experimental data being obtained for flexion-extension cycles during five different walking tests on horizontal and inclined treadmills. Experimental data were obtained using the Biometrics system, which is based on electrogonimeter sensors. Average cycles for each joint were obtained for all subjects in the experimental group and for all experimental tests. The flexion-extension angles at the lower limbs joints have a pronounced increase with the increase of the walking speed, but also with the increase of the treadmill inclination.
This paper presents a human biomechanical model with 4 degrees of freedom of a human body in a car seat with backrest exposed to vertical vibrations. The proposed model has been analysed for five various values of radian frequency as numerical input data, and the results were compared with the results obtained for similar models in the published literature. In the biodynamic analyses the model was simplified to linear system to reduce the complexity of analytical and numerical simulations.
In the present paper, a review of some of the common orthoses designed for osteoarthritis of the knee is performed. The functional and constructive characteristics and the main advantages that recommend them for use are presented.
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