|
| |
|
|
Effect of different types of bicycle tires on energy expenditure
Hejrová, Karolína ; Jindra, Matouš (advisor) ; Baláš, Jiří (referee)
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...
|
|
|
The energetic cost of middle aged women during zumba lesson measured by indirect calorimetric method
Řehořková, Michaela ; Strejcová, Barbora (advisor) ; Bunc, Václav (referee)
Title: The energetic cost of middle aged women during zumba lesson measured by indirect calorimetric method Objectives: The aim of this study is to assess energy cost of the middle aged women during zumba exercise. Methods: A group of 6 women (age range 27-37 years) volunteered to participate in this study. To assess the maximal oxygen consumption, we used the running test to individual maximum. Each subject took part in six lessons of zumba in commercial fitness gym. Each subject was measured during 60 min long lesson. Results: The oxygen consumption of the whole zumba exercise was 19,5±2,2 ml.kg-1 .min-1 that is 68,4 % of the maximal oxygen consumption 40,1±7,4 ml.kg-1 .min-1 measured during running test. That exactly means a caloric expenditure 404,8 kcal (or 1692,2 kJ) during one lesson of zumba. The intensity of whole class reported by HR was covered by 67,5 % from HRmax and by Borg's rates of perceived exertion (6-20) with rates 14±2 from 18±2 immediately after the maximal running test. The highest energetic cost (336, 3 kcal, resp. 1405,9 kJ) was during the main part of the lesson. Zumba can be classified as moderately challenging type of exercise, which is good for fat burning; this statement is based on values of the heart rate measured during lessons of zumba. Key words: zumba, energetic...
|
|
|
Utilisation of nutritive substrates at polytraumatic patients.
Valentová, Gabriela ; Hronek, Miloslav (advisor) ; Havel, Eduard (referee)
There are significant differences in the metabolism of nutritional substrates in polytrauma patients. The actual metabolic needs of the patient may not be achieved despite the guidelines and recommendations for energy supply in the parenteral and enteral form of nutrition are followed. Subsequently this may lead to the occurrence of complications. The aim of the study was to compare the energy intake of each nutrient substrate supplied with nutrition by finding the nutritional substrate utilisation value which is obtained from indirect calorimetry measurements in patients with multiple injuries at the surgical ICU 1 of the Hradec Králové Teaching Hospital. By comparing this data you can obtain the optimum value for the nutritional needs of the patients. In the study we used seven spontaneously breathing polytrauma patients, three women and four men, of an average age of 41±21 years. Utilisations of nutritive substrates of each patient were obtained by indirect calorimetry. Accurate information on the amount and composition of nutrition supplied over 24 hours was also obtained. The patients received an average of 3.80±1.40 g/kg/day of carbohydrates, 1.03±0.56 g/kg/day of lipids and 1.40 ± 0.44 g/kg /day of proteins. The total energy intake was on average 30.94±11.03 kcal/kg/day. In six of seven...
|
|
|
Energy expenditure in Zumba
Řehořková, Michaela ; Baláš, Jiří (advisor) ; Bunc, Václav (referee)
The main objective of this study was to assess the energy demand of Zumba. The energy demand was determined by the indirect calorimetry. Four middle-ages women experienced in zumba participated in the study. A walking test untill the individual maximal exhaustion was performed on a treadmill to determine the relationship between heart rate, pulmonary ventilation and oxygen consumption. The energy expenditure of zumba was undertaken during 3 lessons, which took place at intervals of 3-5 days. We found an average oxygen consumption of 25,73 ± 0,95 ml.min-1 .kg-1 , which corresponded to the energy expenditure of 0,55 ± 0,03 kJ.min-1 .kg-1 . Therefore, we consider Zumba as the activity with high energy demand.
|
|
|
Thermal comfort and its estimation
Žáková, Monika ; Vondra, Vlastimil (referee) ; Nováková, Zuzana (advisor)
This paper summarizes the problems of human thermoregulation and its measurement, with a focus on the method of indirect calorimetry in resting conditions at different ambient temperatures and during physical activity. It also introduces the issue of human thermal comfort and the methodology of its monitoring using thermal manikin. It describes PowerCube Ergo (Ganshorn, Germany) and Cardiovit AT-104 (Schiller, Switzerland), the diagnostic devices used to spiro-ergometry measurements. It introduces the options to export data. The work proposes the protocol for measuring the thermoregulation of the small group of volunteers, which is realized by the practical part. According to the same protocol is monitored thermal comfort of the thermal manikin. In MATLAB is created the application, allowing clear analysis of measurement records. The data are evaluated and discussed.
|
|
|
Daily energy expenditure of subterranean rodent, mole-rat \kur{Fukomys darlingi}, in the relation with group size and temperature
WIEDENOVÁ, Pavlína
Daily energy expenditure (DEE) was examined in the social subterranean rodent Mashona mole-rat (Fukomys darlingi) by the long-term (24 hours) indirect calorimetry. Individuals´ DEEs were compared with DEEs of grouped mole-rats (groups of 2, 3, 4 and 7) to establish the role of social thermoregulation (?huddling?) in this species at two different temperatures (20 and 30°C). The average DEE of single isolated individual was 1.84 ? 0.25 mlO2 g-1h-1 at Ta = 30°C and 2.99 ? 0.34 mlO2 g-1h-1 at Ta = 20°C. The influence of group size on daily energy expenditure (DEE) was observed. The energy savings rose with the increasing number of individuals up to 33.77% in group of seven. Maximal energy savings at 30°C were reached in group of three animals and did not increase further with an increasing number of animas in the group. Similarly at 20°C the maximal savings were observed when seven animals were present. My results confirm that social thermoregulation is an essential mechanism that saves energy expenditure of F. darlingi, which is important in the food-scarce underground environment.
|
guest ::
