The influence of nutrition on the incidence of obesity among children aged 10 - 15 years.

The main aim of this thesis was identify nutritional status, especially the incidence of overweight and obesity among children aged 10 - 15 years and evaluate the qualitative and quantitative aspects of eating, eating habits and regularity of eating in relationship to physical parameters. This research deals with the frequency and type of physical activity, which is also an integral part of a healthy lifestyle. The research was conducted at children´s department in Klaudián´s hospital in Mladá Boleslav, in the presence of person, who was carried out this research. Data collection was carried out by filling questionnaires and real measurements of physical parameters or using data measured in the doctor´s office. Obtained anthropometric data were analyzed by using percentile graphs. Questions regarding eating and physical activities were evaluated separately. It was found that 16,25 % of the 80 examined individuals were overweight and 22,50 % obese. It was found that the BMI and subsequent inclusion in the percentile graphs correlates well with the values of the waist circumference.The link between diet and the prevalence of overweight or obesity was not proven. The most commonly consumed inappropriate nutrition component are sweetened beverage. Half of individuals do physical activity at least 3 times a week. H1 hypothesis, which assumed the prevalence of obesity among examined individuals greater than 13 % was confirmed. It also was confirmed hypothesis H3, which was supposed to sweetened drinks daily drinking less than one third of respondents. Other hypotheses H2 and H4 were rejected.The research confirmed the current trend of increasing prevalence of overweight and obesity. At the same time, there was found deficiency in the quality of consumed food and the frequency of physical activity. Nutrition and principles of healthy eating are not the only one cause of this problem, although they have large share on development of overweight and obesity