![]() ![]() On the third hand, man’s locomotor system, aside from the articular levers, possesses its own impetus, a momentum presented by the muscular contractile ability. As soon as one lever can, in relation to the remaining part of the system, arbitrarily change its place within the system, the execution of a certain motion becomes that much more complex. Every level within man has a certain place in the whole system of levers. On the other hand, the body of man is viewed as not only a material object, but as a defined lever system. The body of the living man is viewed as any given material body that is subject to the influence of all forces that govern in the narrow sphere of the Earth’s impact. Problem As the patterns of motion of all material bodies of smaller or larger capacity in space are researched, so are the patterns of motion of every live. The choosing of the optimal models for modelling dynamic moments of inertia was described, and those models were presented as the best approximation of the dynamic moment of inertia in the dynamic sense.ġ. The suggested models for body, arm, and leg were those in which the potential configurations and the influential proportions of distribution of mass were analysed. By knowing the sequential body configuration and the time-shift, it is possible to calculate the dynamic moment of inertia. The suggested model for the head, neck, and fist was modelled with the help of the ellipsoid the model for the forearm, upper arm, lower leg, upper leg was modelled with the help of cylinders and for the torso and foot with the help of the parallelepiped. For each body configuration, solid body parts of simple geometric shapes (circular cylinders, sticks and ellipsoids) were used. Some important definitions of dynamic moments of inertia have been pointed out, based on the approximate geometric shapes of specific segments and anthopometric sizes. The main task of the analysis is focused on models and modelling of dynamic moment of inertia of specific body parts as well as the entire body. From the biomechanical standpoint, the dynamic moment of inertia in the kinetic structure plays an important role especially when it comes to executing movement in open and closed kinetic chains. ![]()
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