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Title: The Map for MTB in the southwest area of Prague Author: Ing. Jiří Mátl Thesis Supervisor: PaedDr. Jiří Šafránek, Ph.D. Objectives: The aim of this work is to find out options for mountain biking in the southwest area of Prague. Opportunities, which is possible ride a bike, usability existing marked trails, create a map with particular selected locations, their evaluation and create another map with a circular route with two crossings in that area. Methods: In our thesis we used to get information about options of mountain biking in the southwest area of Prague which was done using research from available sources and proper field research. Results: The aim of the thesis is maps with areas and routes with their user description for MTB. Keywords: MTB, Trail, Southwest of Prague.

Title: Effect of different types of bicycle tires on energy expenditure Objectives: The aim of this bachelor thesis is to determine the difference in energy expenditure when using different types of bicycle tires. Methods: The research group consisted of 5 males in age 26,4 ± 2,2 years. This was an experiment. The calculation of energy expediture was based on the amount of oxygen consumption (VO2) and exhaled carbon dioxide (VCO2), i.e. indirect calorimetry. For the analysis of respiratory gases MetaMax 3B measuring device was used. Three types of bicycle tires were tested. The test ride was carried out in laboratory on the cycling rollers. Probands completed one test ride (with a cadence of 80 rpm) on each type of tires. Test ride lasted on average 4:55 ± 1:50 min. For results were processed values of 4 minutes steady state VO2. Results: We found out the significant difference in energy expenditure between ride with road tires and ride with Fat Bike tires, and also between ride with trekking tires and ride with Fat Bike tires. The difference between ride with road and trekking tires was, due to the standard error of measurement, insignificant. Conclusion: The energy expenditure reached a significant increase while using tires with the largest contact patch compared to using tires with the smallest...

Problems in legalization of mountainbiking in CZE