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Personality predictors of exercise addiction in competitive sport
Vítková, Tereza ; Mudrák, Jiří (advisor) ; Bezdíček, Ondřej (referee)
Exercise addiction is becoming a recognized concern, particularly prevalent in elite athletic environments where the pursuit of perfection is emphasized. Despite growing awareness of problematic exercise behaviors, research investigating the underlying risk factors remains limited. This study aimed to examine personality predictors of exercise addiction in Czech elite athletes. A sample of 168 competitive athletes, aged 18 to 30 years, completed assessments including the Exercise Addiction Inventory, Sport Motivation Scale-6, the Athletic Identity Measurement Scale, Performance Perfectionism Scale-Sport, and the Neuroticism Scale from Big Five Inventory. In terms of prevalence, the findings revealed that 16.5 % of athletes exhibited problematic signs of exercise addiction, while 76.7 % were potentially at risk with low severity of symptoms. No significant differences were observed between different groups of sports. Using multiple linear regression, the study demonstrated a significant overall effect of personality predictors on exercise addiction. Neuroticism, introjected regulation, and athletic identity were identified as significant predictors of exercise addiction. These findings highlight the importance of psychological factors such as personality traits and motivational regulation in...
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Syndromes associated with numerical aberrations of gonosomes
Sluková, Kristýna ; Mrňáková, Hana (advisor) ; Trková, Marie (referee)
Before the offspring is born, multiple flaws in the DNA, that strongly influence its future life, can occur. These may include differences in the structure of the Chromosomes or their overall quantity. Deviations from the standard genetic attributes of those Chromosomes will cause anatomic and physiological changes on the specimen. These changes act in a repetitive manner if certain conditions are met and because of multiple combinations of symptoms, genetic syndroms with similar manifestations have been categorized and named. As these abnormalities occur in early pre-natal stages od the offspring's development, there is no way of preventing them, avoiding them or completely curing them.
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Food composition and feeding selectivity of zooplankton
Lis, Jonáš ; Škaloud, Pavel (advisor) ; Čablová, Radka (referee)
Zooplankton are an important link in the food web between phytoplankton and higher tro- phic levels, and understanding their feeding preferences is the key to unraveling the functions and dynamics of aquatic ecosystems. Current knowledge of zooplankton food composition is limited, consisting mainly of laboratory experiments that have revealed different hunting strategies and selection of prey based on size and nutritional value. Recently, publications have emerged that, through the use of DNA metabarcoding, provide a completely new and comprehensive insight into the diversity of zooplankton diet composition, especially copepods, cladocerans and rotifers. These methods reveal that the feeding niches of copepods and cladocerans are distinct and do not overlap. In general, both groups are said to prefer mainly diatoms as their food, when available. The food niches of rotifers are so diverse that no clear trend can be established for the entire phylum. Cyanobacteria appear to be the main source of energy for zooplankton and are proba- bly consumed by metazooplankton largely as secondary prey when consuming ciliates and other heterotrophic prey. Furthermore, differences in feeding niches between species are known and can be partly explained by their vertical distribution, and different levels of feeding...
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Mesocestoides spp. - the spectrum of species, hosts, and life cycle modes
Zavadil, Ondřej ; Horák, Petr (advisor) ; Skála, Vladimír (referee)
Tapeworms of the genus Mesocestoides, which belong to the order Cyclophyllidea, are parasites of carnivorous vertebrates. Their larvalstages of tetrathyridiaare found in a wide range of tetrapod intermediate hosts. Within the genus, there is an anomalous species Mesocestoides corti, whose tetrathyridia reproduce in hosts by asexual longitudinal division. There is no mention of the possibility of such reproduction in other species. Thus, the laboratory strain of M. corti is widely used as a model organism that is well maintained under in vivo and in vitro conditions due to its asexual reproduction. Four other species are known to occur in the genus and are described by both morphological and molecular data. The remaining known species are named only on the basis of morphology. Adults are characterised by their rare morphology. This includes the ventromedian position of the genital atrium, the paired vitelline glands, and in gravid proglotids, developed paruterine organ, which contains eggs with oncospheres. The life cycle has not been yet explained, but it is assumed that the putative cycle involves three hosts. An alternative hypothesis considers the possibility of a two-host life cycle.
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Analysis of the success of category A contestants in the Geography Olympiad on the example of the Praha-východ district
Konečný, Jaroslav ; Jelen, Jakub (advisor) ; Krajňáková, Lenka (referee)
The present bachelor thesis deals with the analysis of the success rate of the competitors of category A of the district round of the Geography Olympiad on the basis of their preparation for the competition. The model region of Prague-East was chosen for the analysis. The aim of the thesis is how the contestants prepared for the competition and what aspects of their preparation played a role in their subsequent success in the competition. A sub-objective was to find out whether geographically gifted pupils are found among the most successful competitors. These objectives were narrowed down to a number of research questions to which answers were sought using a questionnaire survey and focus group interviews. It was found that the preparation for the competition varied among the competitors. Some aspects of preparation play a more important role than others. A possible deficiency in some students' preparedness may be little or no involvement by teachers in the preparation process. Key words aptitude in geography, gifted student, preparation for the competition, Geography Olympiad
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Physiotherapy for children with developmental delay
Fulková, Kristína ; Šebek, Milan (advisor) ; Tichá, Monika (referee)
BACHELOR THESIS ABSTRACT Author: Ing. Kristína Fulková Supervisor: Ing. Milan Šebek Title: Physiotherapy for children with developmental delay Abstract: Developmental delay is a clinical term referring to a situation where a child does not reach expected milestones at a given age. This paper discusses the diagnosis, assessment and trends in the treatment of children with developmental delay. A thorough diagnosis is essential to identify specific developmental disorders such as developmental coordination disorder and cerebral palsy. In the Czech Republic, there is no uniform tool for developmental assessment in well-child visits, while abroad there is a tendency to use standardized questionnaires. Monitoring of children's development from the physiotherapist's perspective is possible with standardized instruments, which also provide the possibility of monitoring the effect of therapy. In the Czech Republic, the most used therapeutic concepts such as Vojta therapy, Bobath concept, BPP and ACT offer different methods of supporting motor development, but there is contradictory information in the literature about their effectiveness. Interventions mentioned in the international literature, such as COPCA, GAME and START-Play, emphasize family involvement and stimulation of the child's own movement. These...
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Ketogenic diet as a treatment for inherited disorders of ATP synthase
Kudrnovská, Barbora ; Mráček, Tomáš (advisor) ; Tesařová, Markéta (referee)
The Tmem70 protein plays a significant role in the biogenesis of ATP synthase, mutations in the Tmem70 gene are a common cause of mitochondrial disease and have been associated with neonatal encephalocardiomyopathy. Similar to other mitochondrial disorders, there is currently no available treatment for Tmem70 defects. However, the ketogenic diet (KD) appears to be a potential therapeutic intervention for various mitochondrial disorders, and our preliminary results demonstrate its positive impact in a mouse model of Tmem70 dysfunction. Therefore, using this Tmem70 model, we decided to test a modified KD, which could be a better alternative for a potential application in human patients. The effect of the modified KD was examined in a mouse model of tamoxifen-induced whole-body knockout of Tmem70 (Tmem70 KO). The modified KD led to improved survival, slowed weight loss, and normalization of plasma indicators of liver damage. We detected a positive effect of the modified KD on the assembly of ATP synthase in liver tissue, however, skeletal muscle showed only a minimal response. Based on the results of this study, we infer that although the absence of functional Tmem70 affects both liver and muscle tissues, the greater impact on the phenotypic manifestation in the Tmem70 KO mouse model is due to liver...
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Proper handling of infant nutrition in hospital facilities
Čadová, Nikol ; Průšová, Kateřina (advisor) ; Nikodemová, Hana (referee)
This bachelor thesis deals with issues related to the manipulation of infant nutrition in healthcare facilities. The theoretical part of this work deals with breast milk, infant formula and its specifics, administration of infant diet, as well as manipulation of infant nutrition in pediatric wards and in the dairy kitchen. The aim of the empirical part of this work was to verify the knowledge of nurses through a research survey and to identify possible differences in the manipulation of infant nutrition in different workplaces. A quantitative research method was chosen to obtain data using a self- constructed questionnaire containing 26 questions. Out of the original 130 distributed questionnaires, a total of 74 were analysed, with 3 excluded due to incompleteness, resulting in a response rate of 59.2%. The results of the research survey showed that the knowledge and practices of nurses in manipulating infant nutrition are not uniform. The most significant statistically significant difference in respondents' answers was related to the workplace where they are employed. No statistically significant difference was found in respondents' answers in relation to their education. In conclusion, it is necessary to mention that the research survey revealed some shortcomings in respondents' knowledge and...
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Effects of microplastics on earthworm gut microbiome, their immunity system and metabolome
Flohrová, Tereza ; Cajthaml, Tomáš (advisor) ; Lišková, Petra (referee)
Microplastics are widespread pollutants found in aquatic, atmospheric, and soil environments. They are released directly into the soil, for example, from mulch films and textiles. Microplastics accumulate in the soil and can have a negative impact on soil microfauna and macrofauna. Earthworms, acting as ecosystem engineers, and soil and gut bacteria play a significant role in biogeochemical cycles of biogenic elements. Disruption of earthworm function, their gut bacteria, or soil bacteria could have an impact on the entire ecosystem. In the context of this thesis, earthworms of the species Apporectodea sp. were exposed to microplastics from polypropylene black nonwoven textile at concentrations of 1 g/kg soil and 0.0265 g/kg soil for 14, 28, and 56 days. DNA was sequenced to identify bacteria from the earthworm gut, gut contents, and rearing soil. Additionally, untargeted analysis of metabolites from the earthworm body and extraction of immune cells from earthworms using three different methods were conducted. No significant changes caused by the presence of microplastics were found in the representation of bacteria from the gut, gut contents, and soil, but statistically significant changes in the metabolome were detected. A sufficient number of immune cells could not be isolated from the...
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Impact of warming on soil organic carbon
Štecová, Michaela ; Vindušková, Olga (advisor) ; Jílková, Veronika (referee)
Climate change is the main cause of rising global temperatures around the world. Carbon sequestration in terrestrial ecosystems is considered one of the main tools for climate change mitigation, but current estimates of sequestration potential do not include the impacts of future climate change. The aim of this thesis is to summarize our current knowledge on the response of soil organic carbon to warming, alone as well as in combination with other drivers of climate change. A complementary aim is to compare the different methods used to study the impact of warming on soiIncreased temperature causes significant losses of soil carbon, but no consistent effect has been observed in combination with other aspects of climate change. Research suggests that carbon losses depend on the stability of soil fractions, with warming leading to greater decreases in particulate organic matter (POM). The combination of warming with rising CO2 concentration has led to an overall increase in soil carbon, although losses have been observed in combination with drought. When studying the effects of warming on soil carbon stocks, selecting the appropriate method is crucial. Active methods offer precise control but are more expensive and can impact soil biota, whereas passive methods are cheaper but require more time....
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