One of the many elements of the process of qualifying the candidates for military aircraft pilots is the assessment of the correct functioning of their body balance system, responsible, inter alia, for spatial orientation during a flight. That system continuously controls the spatial position of the center of body mass. To measure that value directly is a complex metrological task. That is why an equivalent measure is used in tests of standing posture stability, i. Based on the conducted measurements of the body mass center position and the stabilographic tests, the correctness of their balance system performance was assessed.
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PL EN. Widoczny [Schowaj] Abstrakt. Adres strony. Zeszyty Naukowe. Mrozowski, J. In most definitions of biomechanics as a leading subject, the movement of man and animals appears.
This demonstrates its great importance for the functioning of living organisms, and also indicates the need for continuing research on his full knowledge. Walking is one of the most important and most common types of human movement. Despite many years of intensive research, our knowledge of this form of movement is still incomplete, and the methods and devices for the analysis are constantly being developed and refined.
In presented study, there can be distinguished two basic parts, in which the leading theme is gait of human. The first part chapter 4 focuses on the analysis of the stability of the normal gait, which is the basis for any comparative study of bipedal locomotion and the pathology of the musculoskeletal system. The most popular method for evaluating both postural and locomotive stabilities, known for several decades, use the dynamometric platforms to obtain information about the foot center of pressure and its displacement.
However, it has some drawbacks and limitations, for example, it does not give full knowledge of the kinematic parameters of gait.
Procedure proposed in this treatise combines the well-known method for optoelectronic recording the trajectory of the selected points of the walking person's body with the stability criteria used in the design of bipedal walking robots.
Tests carried out using two amateur digital cameras and variable speed treadmill shift shows that even such a simple system gives satisfactory results and can be successfully used in research centers and rehabilitation facilities not yet have extensive hardware or significant financial resources. Second part of the treatise chapter 5 presents the stress study of selected elements of lower limb bones' skeleton, which loads are determined mainly by the dynamic forces generated during gait.
The analysis was performed on the pelvic bone, femoral neck and shin bones. Based on numerical simulations executed using the finite element method, there was obtained some information on the size and distribution of the stress test structures, as well as critical areas from the standpoint of their strength.
The calculations were carried out for different configurations of the controlled parameters, which allowed, inter alia to determine the critical values of the femoral neck-shaft angle, assessing the impact of the muscles efficiency on the femoral neck status or changes in the stress of the tibial bone at the damaged fibula.
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Biomechanika Układu Ruchu Człowieka - T. Bober, J. Zawadzki
Bober, Tadeusz (1932- ).
BOBER- BIOMECHANIKA UKŁADU RUCHU CZŁOWIEKA