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The effect of the circadian rhythm on the work of a paramedic
ŠEDIVÝ, Martin
The topic of the bachelor's thesis is "The effect of the circadian rhythm on the work of a paramedic". Most rescuers may not even realize the great sacrifice they make by performing this demanding profession. This is a very respectable job, which is burdened with a huge amount of stress and a demanding work schedule. The combination of these two unfavorable factors may have a negative impact on the health of rescuers over a longer period of time. The theoretical part deals with the explanation of the term circadian rhythm, sleep and its structure, nutrition, physical activities, blue light, caffeine, health complications that are the result of a disturbed circadian rhythm and the effect of circadian rhythmicity on work efficiency. The research part was implemented using semi-structured interviews, and 12 informants who are employed at the South Bohemian Region Medical Rescue Service in the position of paramedic were included in the research investigation. Each informant was asked the same questions, which were then evaluated using the coding technique and were divided into several categories and subcategories. The main topics for responding the objective of the work were health complications of shift work, adaptation to shift work, principles of proper nutrition and sleeping habits. Research has shown that the circadian rhythm affects the work of a paramedic, but it is very individual and affects each paramedic in a different way. Alternating irregular shifts are difficult to get used to, and working at night is not ideal from a physiological point of view. Most of the rescuers confirmed to us that they had a lower work performance and a longer reaction time during the night hours. Furthermore, night shifts have a negative effect on the health of workers, and health complications may occur years later, which may not allow rescuers to continue to perform their work as well as before.
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Zlín FCK Technology
Morávek, Jakub ; Kudla, David (referee) ; Štěpán, Marek (advisor)
The diploma thesis deals with the design of a residential building in the area of Malenovice near Zlín, where a new residential complex is to be built on the land of the current Malenovice sawmill, situated in close proximity to a four-lane road. The concept of this proposal is based on a detailed examination of human cycles and their impact on people in everyday life in relation to architecture. From the life cycle through the annual cycle and especially the daily cycle, professionally referred to as the circadian rhythm. The building, with its idea concept, orientation to the cardinal points, zoning of the apartment and also the shape solution, responds to the needs of man in terms of light comfort and at the same time addresses the greatest efficiency of the technologies used precisely in relation to light comfort, the form solution also creates conditions at the terrace level for the meeting of a wide range of inhabitants of the house - creating diversity. It reduces the need to illuminate the space during the day with artificial lighting, and after dark it addresses artificial lighting with respect to human health, thus also reducing energy consumption.
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SLEEPING OUTDOORS
Bendák, Jan ; Tomalík, Michael (referee) ; Tobola, Ondřej (advisor)
The work deals with the influences acting on humans when staying in the outdoor environment and their effects on our daily rhythm. It focuses closely on the ritual of sleeping outside. It strives for a natural understanding of the laws of nature through exposure to the influences that affect us open air on a daily basis. Seasons, weather, light and other factors are determining elements for the work. The result of understanding and combining these principles are outdoor structures designed to accomodate groups or individuals overnight. The objects should serve as a platform for creating a community that will further develop these principles autonomously. The aim is to present the positives of sleeping outside, delimit against the trend of unsustainable growth and to provide an example of how to deal with this tendency through the perception of nature.
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Lighting with Tunable Spectral Distribution and Its Influence on Human Physiological Functions
Hanák, Petr ; Bendová,, Zdeňka (referee) ; Baxant, Petr (advisor)
In this diplomat theses are considered the effects of light on human beings, especially on physical performance. The goal of this work was to design a suitable method for evaluation of the effects of light on physical performance. Furthermore, to verify designed methods in laboratory environment and the assessment of collected data. After creating this method several people were tested under different light conditions and collected date evaluated. The results are suggesting that high intensity lighting with low wave lengths leads to an increase of physiological activity in organism and therefore to a potential decreasing physical performance.
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Illumination with respect to biological functions
Němec, Jiří ; Štěpánek, Jaroslav (referee) ; Baxant, Petr (advisor)
The paper summarizes the basic light-technical parameters, the principles of visual and non-visual photoreceptions and the effects of light on the organism. Several chapters focus on the mechanism by which light affects hormone levels and the circadian rhytm of the organism. In relation to the lighting system, the impact of electromagnetic radiation, associated with the controls, on the body is also considered. Briefly described are systems based on smart LED light sources or smart switches. The result of the thesis is to choose the solution that best suits the requirements of the contracting authority.
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The effect of the blue light on the human body
Dvořák, Petr ; Krbal, Michal (referee) ; Štěpánek, Jaroslav (advisor)
This thesis explains the term „blue light“. It deals with the sources of blue light and the effects of this type of electromagnetic radiance on human body. The focus is concentrate especially on problems, which are evocated of blue light. The biggest danger is the desynchronization of circadian rhythm and photochemical damage of retina – photoretinitis („blue light hazard“). The basic principles of biological processes and the visual system are described here. These processes are controlled by properties of incident light onto the retina of eye. The basic information about artificial sources of blue light commonly used in households and in industry are mentioned in the second half of work. These light sources were measured and elaborated. The electromagnetic spectrums of sources are portrayed and there is a comparison of sources due circadian effect too.
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Vliv vybraných faktorů na spánek
Brožová, Kateřina
The bachelor thesis deals with the factors that can influence human sleep. The thesis discusses the effects of stress, weather, caffeine, room temperature and lighting on human sleep. Part of the thesis is devoted to lighting - its evolution, distribution and its proper use in interior design. The thesis also discusses sleep, its importance, stages and possible sleep disorders, which can be caused, among other things, by light disrupting the circadian rhythm. Another section of this bachelor thesis deals with the effect of artificial and natural light on sleep. It describes both its negative and positive effects on the organism. The design of bed furniture with integrated lighting is based on these findings. The work is divided into two parts - theoretical and practical. The theoretical one focuses on the influence of selected factors on sleep, while the practical one deals with the actual design of bed furniture with integrated lighting and the measurement of sleep quality.
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The Importance of Circadian Rhythms in Humans with a Focus on Adolescents
Kolářová, Michaela ; Vančata, Václav (advisor) ; Ehler, Edvard (referee)
The aim of the presented diploma thesis is a detailed outline of the meaning of circadian rhythms in adolescence. Circadian rhythms appear in early childhood, but undergo many changes during lifetime. While in early childhood the waking and sleeping cycle shifts to an earlier time, during adolescence it is quite the opposite and the cycle is shifted a few hours later and in older age the cycle even returns to an earlier state. Adolescence is associated with the most significant changes and increased demands on study, independence and generally more overload at the expense of quality and adeqaute sleep, which not only causes circadian rhythms to dissipate and shift dramatically, which such as health. For adolescents, the delayed phase is naturally correlated with sexual development, with sleep patterns being controlled by the biological component. Respecting physiological changes in adolescence and striving for institutional changes seem to be the most appropriate therapies instead of forcing patterns basen on institutional and parental needs, which only undermines adolescent body chemistry, results in insufficient and poor quality sleep for functioning and healthy physiological development of adolescents.
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Blue light-blocking glasses and their effect on sleep quality parameters
Honzíková, Anna ; Levínská, Kateřina (advisor) ; Kolář, Jáchym (referee)
This study focused on sleep and the influence of blue light on sleep quality parameters. The experiment has been set up into a four-week research divided into two phases. Both phases were two weeks long. The first phase was without blue light blocking glasses, and the second phase with the glasses. We also worked with a Garmin smartwatch, sleep diary and standardized Pittsburgh Sleep Index questionnaire (filled out before and after the experiment). Parameters have been collected from a smartwatch (average heart rate, duration of sleep, duration of REM and NREM sleep, time of falling asleep, number of awakenings per night and stress levels), sleep diary (body temperature during night/morning, subjective quality of sleep and tiredness during the) and the Pittsburgh questionnaire. During the phase with glasses, probands had to wear them at least 90 minutes before sleeping. They could take them off only in a room without any artificial light. Every day probands filled up their sleep diary and entered information from their smartwatch. After the experiment, the data from both phases were processed and compared. Statistically significant parameters (p ≤ 0.05) were average heart rate, body temperature measured in the morning, number of awakenings per night, subjective sleep quality, results of a...
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Examination of circadian rhythm and light hygiene with focus on shift workers
TESKA, Andrej
The aim of this bachelor thesis was to summarize the existing knowledge about circadian rhythm, sleep, the role and importance of melatonin in the human body, the causes and consequences of circadian rhythm disruption and the possibilities of its strengthening for the best health and vitality. The thesis is designed as a literature search and is based mainly on foreign studies in this field, however, a lot of information is supplemented by Czech authors. Health in the 21st century is an absolutely complex value, which should also be looked at comprehensively. All possible aspects of the erosion of health, which are often overlooked, should be examined. The themes developed in this paper focus on the growing awareness that we ignore the circadian and sleep systems at our peril. It is the disruption of the circadian rhythm that, according to many studies, brings about health ailments in our time. Indeed, a large number of studies confirm that it is the breakdown of circadian rhythms that is behind many of the diseases that manifest in the modern world. This paper summarizes both the mechanisms of circadian rhythm functioning and its major disruptors and potential risk factors associated with various types of diseases. It provides new insights into how to care for our health in a holistic way that is as sustainable as possible.
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