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Consumption of food supplements for different groups of clients fitness center
Tůmová, Olga ; Svačina, Štěpán (advisor) ; Vilikus, Zdeněk (referee)
This bachelor thesis deals with the consumption of dietary supplements for different groups of fitness center clients. The work is divided into theoretical and practical part. The theoretical part focuses on the basics of nutrition, and is described by energy intake and expenditure, macronutrients (carbohydrates, proteins and fats), micronutrients (vitamins and minerals) and drinks. The following chapter describes the basic supplements most commonly used in fitness. The practical part was processed using a questionnaire on social networks and in the fitness center Kentoya, Prague 10. The aim was to explore the most commonly used supplements, assessment of knowledge of the main effects of the supplements and visitors' experience with diets. The results are reported in tables and graphs and the answers on the internet and in the fitness center Kentoya are compared. The results show that almost 79 % of visitors to the fitness center take dietary supplements, the most widely used supplement is a protein drink. Approximately 67 % of visitors were during their life on some kind of diet and unfortunately the most common source of information concerning diet is the internet. Keywords: fitness, food supplements, supplements, nutrition, fluid intak
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Food supplements and nutrition of performance and professional cyclists
Bednář, Michal ; Šafránek, Jiří (advisor) ; Polášková, Marcela (referee)
Title of the thesis: Food supplements and nutrition and performance of professional cyclists The goal of the paper: The aim of my work is to determine differences in the useing of dietary supplements and performance by professional cyclists. I also find out how different are the twosupplementation groups monitored before, during and after exercise. I focused on it also which marks of supplements by professional cyclist and cyclist who prefer performance. Of course I did not neglect to compare the groups surveyed drinks. Methodology: The data I obtained through a questionnaire that I circulated by an e-mail over the Internet.With some athletes I regularly meet in person, that I used for directly answering a questionnaire. The questionnaire used was clear and simple questions. The questionnaire is given below in the Annex. Most of the respondents interviewed were male and the age range was wide. Results: The results show that the greatest differences between groups of respondents are insupplementation before, during and after exercise. Differences are also in used the labeling of dietary suplements. Professional cyclists gather information about supplements from sources other than performance cyclists. Professional cyclists are mostly used by councils traper or learn from the experience of thein team...
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The content of anthocynanidines and other pigments in commercial drugs and food supplements
Karanská, Hana ; Martin, Jan (advisor) ; Karlíčková, Jana (referee)
Name of the work: The content of the anthocyanidines and other pigments in commercial drugs and food supplements Author: Hana Karanská This thesis is focused on the determination of anthocyanins and anthocyanidins in food supplements, fruits and juices. The substances were extracted with methanol using an ultrasonic bath or boiling water bath. Analysis was performed by HPLC. The results of this work show that the content of anthocyanins and anthocyanidins are in the determined samples represented in varying degrees. All the analysed samples showed the content of these substances. Based on information from the manufacturer we can say that the product Ostrovidky plus contained the declared amount of anthocyanins. Manufacturers of remaining specimens does not provide sufficient information about the composition for unambiguous determination of the result, but we can say that the products approximately satisfy the content of substances declared by the manufacturer. The amount of anthocyanins in the fruit meets the values reported in literature. Juices did not indicate the exact amount of anthocyanins.
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Determination of zinc in food supplements
Nedorostová, Helena ; Hraníček, Jakub (advisor) ; Šíma, Jan (referee)
- 1 - Abstrakt Tato bakalářská práce je zaměřena na stanovení zinku (zinečnatých iontů) v potravinových doplňcích pomocí atomové absorpční spektrometrie. Součástí práce je také porovnání mezí detekce dvou odlišných atomových spektrometrů. Cílem práce bylo zjistit optimální podmínky a vliv interferencí na stanovení zinku, nalézt vhodnou metodu pro převedení vzorku do roztoku, a také porovnat meze detekce u použitých přístrojů. Optimalizovanými parametry byla výška paprsku nad hranou hořáku, průtoková rychlost acetylenu, otočení hořáku, šířka spektrálního intervalu, typ plamene. Převedení pevného vzorku do roztoku bylo provedeno ve vodě za laboratorní i zvýšené teploty, v kyselině dusičné nebo kyselině dusičné s přídavkem peroxidu vodíku, též za zvýšené teploty. Analyzovány byly tyto potravinové doplňky: Centrum od A až po železo, Walmark- vápník, hořčík, zinek, Spektrum 50+, Calibrum 50 plus, Supradyn Energy Complex. Množství zinku v potravinových doplňcích bylo stanoveno na spektrometru GBC 933 AA v kolmém uspořádání. K porovnání meze detekce byly použity přístroje GBC 933 AA s výbojkou s dutou katodou a ContrAA 700 s xenonovou výbojkou. U obou přístrojů byl pro experiment použit plamen obsahující acetylen-vzduch. Pro stanovení zinku byla pomocí standardních roztoků vytvořena kalibrační křivka, z níž byly...
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Nutritional strategy for long-distance cross-country skiers
Opočenská, Tereza ; Česák, Petr (advisor) ; Šimková, Michaela (referee)
Title: Nutritional strategy for long-distance cross-country skiers Objectives: The aim of the bachelor thesis is to answer as the clearest as possible the following research questions: 1. How appropriate diet affects the internal environment of the body long-distance cross-country skiers? 2. What composition of the diet and supplements is most suitable for long-distance cross-country skiers? 3. When to start eating regime that will help competitors prepare the body for the completion of remote cross-country skiing? Methods: We used the research of czech and foreign literature. We searched the scientific studies related to our theme through the service Google Scholar. We also drew from licensed Internet databases (PubMed, SPORTDiscus, Scopus, ProQuest, OvidSP, JSTOR). Results: We found that long-distance cross-country skiers should follow the macronutrients and micronutrients content in connection with food intake. The ratios of nutrients taken depends on whether it is a period before the race, during the race or after its completion. However, a key role in all three phases perform carbohydrates. Optimal nutrition strategy should start no later than 1-3 days before the race. Keywords: sport, exercise, cross-country skiing, nutrition, food supplements, endurance, performance
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Nutritional indicators of performance triathletes
Skuhrová, Tereza ; Vilikus, Zdeněk (advisor) ; Matoulek, Martin (referee)
This bachelor thesis is aimed to find out nutrition indicators of performance triathletes and to compare them with non-sportsmen. The next aim is to point out the importace of proper balanced diet in endurance sport and to evaluate the usage of food supplements. This thesis is divided into two parts, a theoretical part and a practical one. Main individual nutrients are described in the theoretical part in connection with energy metabolism and with emphasis on influence of nutrition in triathlon. The practical part summarizes results obtained from an analysis of a four-day nutritional intake of 8 performance triathletes and 8 non-sportsmen. A range of the respondents' age was between 26 and 37 years. The results point out that both groups have higher energy intake than recommended rate. Both groups' intakes of proteins and fats of animal origin are approximately twice higher than recommended as well as their results of micronutrient intake are not balanced. Furthermore, a brief questionnaire shows that 50 % of respondents were not satisfied how they can gain information about nutrition, at the same time 54 % use the internet as a main source of information and only 13 % read a scientific literature. Key words: triathlon, sports nutrition, endurance performance, food supplements, drinking regime
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Nutrition of elite cross-country skiers in summer training
Pilná, Petra ; Coufalová, Klára (advisor) ; Kinkorová, Ivana (referee)
Title: Nutrition of elite cross-country skiers during summer preparation. Aims: The study aims to describe the nutrition of endurance athletes competing in cross-country skiing during summer training (season). Also, to discover what is the level of their energy balance and nutrient ratio. Lastly, to find out if supplements were used during the mentioned period. Methods: The research method was a structured survey consisted of open questions focusing on a type and quantity of consumed nutrition. Furthermore, the questions were centred around physical activity detailed of a concrete type, average heart rate, distance of taken mileage, intensity and calories burned. The questionnaire was sent electronically to five men who are among the representatives of the Czech Republic in cross-country skiing. Results: Three out of five elite cross-country skiers were in a negative energy balance of which the most significant difference between energetic expenditure and intake is 1338 kcal. The most notable differences were noticed in the consumption of carbohydrates opposite to the least difference in the protein intake. The percentual average of nutrients in the diet of all five elite cross-country skiers are 46,4 % carbohydrates, 34,4 % fats, 17,4 % protein of total energy intake. Four out of five respondents...
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Regulation of advertising for food supplements in public law
Brousilová, Tereza ; Svoboda, Petr (advisor) ; Rajchl, Jiří (referee)
Public law regulation of advertising food supplements Abstract The thesis deals with advertising of food supplements and its public regulation. The aim of this work is to provide information about existing legislation and decision-making practice in this area. The first chapter outlines the basic legal sources of public regulation of advertising for food supplements, which consists mainly of several European regulations, the Food Act and the Act on Advertising Regulation. The second chapter deals with general issues of legal regulation of food suppelements. Food supplements are foods intended to supplement the normal diet. They must be appropriately labeled, not given medical properties and health and nutrition claims may only be used in accordance with European regulations. The notification is carried out at the Ministry of Agriculture and the ingredients are controlled by the Czech Agriculture and Food Inspection Authority. It is also important to understand the difference between medical products and food supplements, which may not always be obvious. The third chapter deals with general issues of legal regulation of advertising. It defines what advertising is, how it is regulated and what its constitutional legal basis is. The whole thesis culminates in the fourth chapter, when it comes to special...
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Determination of manganese in food supplements by atomic absorption spectrometry
Melicharová, Zuzana ; Hraníček, Jakub (advisor) ; Šíma, Jan (referee)
EN The main content of this thesis was the determination of manganese in the form of manganese ions in food supplements by the atomic absorption spectrometry. It was necessary to find the optimum conditions for this method, to conduct interference studies, to find a suitable way of transferring samples into solution and to determin manganese to achieve this goal. Following parameters were examined in optimalization study: beam height above burner edge, burner horizontal position, acetylene flow rate, torch angle, and spectral interval width. Copper, iron, sodium and calcium ions were investigated as interferents as they were present at the highest concentration in selected food supplements. The conversion of solid samples into solution was carried out in water and nitric acid at a room temperature as well as elevated temperature. These food supplements were selected for analysis: Calibrum 50 Plus, Caltrate Plus, Center A to Iron, DAS Gesunde Plus A-Z Multispectrum, GS Extra Strong Multivitamin, Spectrum 50+ and Supradyn Energy Complex. The manganese assay was performed on a GBC 933 AA spectrophotometer. Standard solutions were measured to determine the detection limit and the limit of determination of the instrument. The detection limit was 0.001 mg/l and the limit of determination was 0.004 mg/l...
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Zinc in food suplements
Sauchanka, Katsiaryna ; Suková, Petra (referee) ; Řezáčová, Veronika (advisor)
The aim of this bachelor thesis was to determine zinc in the dietary supplements by the voltammetric method. The general properties of zinc, its occurrence, toxicity and influence on human health are described in the first part. Next the methods, including a detailed description of the voltammetric analysis, are summarized. The experimental part is focused on the process of optimization of the conditions for zinc voltammetric analysis and the application of the optimised method on real samples.
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