Kazimierz Wielki University in Bydgoszcz

About: Kazimierz Wielki University in Bydgoszcz is a education organization based out in Bydgoszcz, Poland. It is known for research contribution in the topics: Luminescence & Population. The organization has 1109 authors who have published 2923 publications receiving 19548 citations. The organization is also known as: Casimir the Great University & Uniwersytet Kazimierza Wielkiego w Bydgoszczy.

Measuring the force of punches and kicks among combat sport athletes using a modified punching bag with an embedded accelerometer

Abstract: The main aim of the study was to design a new system to measure punching and kicking forces as well as reaction times in combat sport athletes. In addition, the study examined whether there were any intergender differences in the force of punches thrown by boxers and kicking forces delivered by taekwondo athletes. Boxers (male, n = 13; female, n = 7) were examined for the force of single straight punches and taekwondo athletes (male, n = 14; female, n = 14) for force of single Apdolio and Dwit Chagi kicks. The punching bag was equipped with acceleration transducers and gyroscopes embedded in a cylinder covered with a layer to absorb shock as well as a set of colour signal diodes. Value of the punching bag's acceleration was used for calculating: strike force; the punching location on the bag; and time of a strike. The relative error of force calculation was 3%; the relative error in acceleration measurement was less than 1%. The force of a straight rear-hand punch was greater than the force of a lead-hand punch among male and female boxers. The force of Apdolio kick delivered with a rear leg was greater compared to a lead leg among female and male taekwondo athletes. Significant gender differences were noticed in the force in both types of kicks. In boxers, intergender differences were reported only for the force of a punch thrown with the rear hand. Based on these findings, it was concluded that the modified punching bag is a good diagnostic tool for combat sports.

Nurses’ sense of coherence and their work related patterns of behaviour

Abstract: This paper is a report on the relationship between a sense of coherence (and its components) and work related patterns of behaviour in the group of nurses. Data were collected by two questionnaires (Antonovsky’s Orientation Questionnaire and Work Related Patterns of Behaviour and Experience Questionnaire) in the sample of 331 volunteer nurses employed in three Polish general care hospitals. The analysis of r-Pearson’s correlation and the linear multiple regression analysis revealed a strong relationship between the sense of coherence and healthy type of behaviour, and a strong negative relationship with a burnout type of behaviour. The results obtained in this study provide grounds for the conclusion that the sense of coherence correlates with healthy functioning at work in the group of nurses.

The Use of Waste from the Production of Rapeseed Oil for Obtaining of New Polyurethane Composites

Abstract: This article presents the results of research on obtaining new polyurethane materials modified by a by-product from vegetable oils industry—rapeseed cake. The chemical composition of rapeseed cake was examined. Rigid polyurethane-polyisocyanurate (RPU/PIR) foams containing a milled rapeseed cake in their composition were obtained as part of the conducted research. Biofiller was added in amount of 30 wt.% up to 60 wt.%. Effects of rapeseed cake on the foaming process, cell structure and selected properties of foams, such as apparent density, compressive strength, brittleness, flammability, absorbability, water absorption, thermal resistance and thermal conductivity are described. The foaming process of RPU/PIR foams modified by rapeseed cake was characterized by a lower reactivity, lower foaming temperature and decrease in dielectric polarization. This resulted in a slowed formation of the polyurethane matrix. Apparent density of RPU/PIR foams with biofiller was higher than in unmodified foam. Addition of rapeseed cake did not have a significant influence on the thermal conductivity of obtained materials. However, we observed a tendency for opening the cells of modified foams and obtaining a smaller cross-sectional area of cells. This led to an increase of absorbability and water absorption of obtained materials. However, an advantageous effect of using rapeseed cake in polyurethane formulations was noted. Modified RPU/PIR foams had higher compressive strength, lower brittleness and lower flammability than reference foam.

The problems of students’ physical training individualization

Abstract: Purpose: to assess physical health and biological age of 1st 2nd year girl students, depending on their physical activity, as well as to work out system of control over students’ health. Material: in the research 1st and 2nd year girl students (n=120) participated. Results: students’ busy in their working day was analyzed as well as student’s understanding of healthy life style during working day. We also paid attention to reasons of sharp weakening of students’ physical fitness and determined integral indicator of healthy life style conception as well as significance of every its component. The following concepts are introduced: physical health, including individual level of physical condition; physical fitness and physical state. We found normal level for every component of physical health and correlation between population, regional and individual norms. Conclusions: For students’ healthy life style formation it is necessary to observe norm requirements to all its components. Violation of any component’s norm results in worsening general final result.