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PL
Jedną z podstawowych metod przeciwdziałania występowaniu nadmiernych obciążeń na stanowisku pracy są interwencje ergonomiczne. Celem artykułu jest przedstawienie strategii interwencyjnych, zapobiegających rozwojowi dolegliwości mięśniowo-szkieletowych, w odniesieniu do stanowisk pracy biurowej. Zaprezentowano strategie pozwalające na optymalizację pozycji ciała podczas pracy oraz ograniczenie czasu pracy w pozycji siedzącej.
EN
One of the basic methods of preventing the occurrence of excessive musculoskeletal load at the workplace are ergonomic interventions. The aim of this article is to present intervention strategies that prevent the development of musculoskeletal disorders in relation to office workplaces. Intervention strategies aimed at optimizing body position during work and reducing sitting time during work were presented.
EN
The profession of a seller (especially in small grocery stores) does not enjoy a social respect. The reasons for this are, above all, low requirements, low salary and difficult working conditions. In addition, too little attention is paid in the literature to this profession from the point of view of safety and hazards at work. However, the problem of working conditions in the position of a salesman is an important issue concerning a very large number of people. The paper deals with this difficult topic by describing selected methods of ergonomic analysis and using them to assess occupational risk at the seller's workplace. In the paper, the results of the Ergonomic Checkpoint List, as well as the results of questionnaire surveys are presented. All the results are related to the possibility of proper identification and the probability of hazards occurrence in the position of a seller.
PL
Przedstawiony poniżej tekst prezentuje program PROM-M w zakresie oceny ryzyka dolegliwości mięśniowo-szkieletowych. Przedstawiono normy w których zawarto metody oceny ryzyka, algorytm postępowania a także zilustrowano działanie programu PRO-M w zakresie oceny ryzyka dolegliwości mięśniowo-szkieletowych.
EN
Evaluation of risk connected with ergonomic requirements in respect to musculoskeletal load worker by the machine. The article presents PRO-M software in relation to assessment of the risk of musculoskeletal disorders development. There are presented European standards, which include methods for risk of musculoskeletal disorders development, procedures necessary for risk assessment during machinery design and the PRO-M software related to risk of musculoskeletal disorders development.
EN
During walking, the human pelvis is Ioaded by hip contact force and 22 muscle forces. Due to its complex geometry and structure, biomechanics of the human pelvis is complicated. A three-dimensionaI finite element model of the fulI pelvis was developed and the stress and deformation pattern was mapped, considering musculoskeletal loading, during 8 phases of a normal walking cycIe. The cortical and trabecular bones were modeled with shell-solid elements. The full model consisted of 71 674 tetrahedral and 17 264 shell elements (four-noded), through 16429 nodes. An algorithm was aIso developed to calculate the components and direction of 22 muscle forces, considering the origin, insertion points and change of femur position, relative to the pelvis during walking. Stress contour maps revealed that the zones and magnitudes of maximum von-Mises stresses (28 to 38 MPa for the cortical bone and 1.3 to 1.7 MPa for the trabecular bone) varied from phase to phase during walking. AIso the average phase wise variations for the resultant displacement were 0.1 to 0.5 mm. These results may be used approximately for a cIinical comparison between the normal pelvis and the effectiveness of different pelvic fracture fixation modalities.
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