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Methods of rapid weight loss used by czech combat sports athletes
Gregor, David ; Třebický, Vít (advisor) ; Kovařovic, Vojtěch (referee)
Title: Methods of rapid weight loss used by Czech combat sports athletes. Objectives: The aim of this research project was to determine the prevalence of rapid weight loss (RWL) methods and their specific forms in Czech combat sports athletes. Methods: To determine the use of the methods of rapid weight loss (RWL) we used a purpose- built online questionnaire that was distributed via social media. This research project was open to men and women over the age of 18 who were actively competing in combat sports in the Czech Republic. Although only certain data from men were used for this project. Results: We found, that 94,7 % of participants reduce their body weight before competitions. This reduction then averages 5.33 kg (SD = 3.42) of body weight. The most commonly used methods to reduce weight across combat sports athletes included reducing energy intake (59,1 %), water loading (38,1 %), restricting fluid intake (33,3 %) and more conditioning (28,6 %). Keywords: contact sports; weight manipulation; athletes; weight categories
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Pre-competition reduction of body weight in MMA
Hrdlička, Jaroslav ; Coufalová, Klára (advisor) ; Pavelka, Radim (referee)
Title: Pre-competition reduction of body weight in MMA Objectives: The main aim of this work was to identify what weight reduction methods are used by professional MMA fighters and how many kilograms they reduce before fights. We also wanted to determine the time they start to work with their body weight and whether they feel any psychological changes or fatigue due to weight reduction. We were also interested in what supplements fighters use during weight cut. Methods: A survey method was used for data collection. The research sample consisted of 20 professional MMA fighters between the ages of 18 and 40. Results: We have found out that MMA fighters usually reduce their weight through reduced caloric intake and subsequent dehydration the most. The majority of respondents reported a reduction of 6 to 10 kilograms in the course of 2 to 4 weeks before the fight. Respondents feel weakened during weight loss and experience psychological impacts such as irritation, mood swings, aggression and sedation. Before the fight, 60% of fighters do not experience any signs of weakness, as the time period from weighting to the fight itself is sufficient to allow them to regenerate. The most commonly used supplements during weight loss are BCAAs, fat burners, proteins, multivitamins and multiminerals. Keywords:...
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Physical profile of judo athletes and its changes due to body weight reduction
Coufalová, Klára ; Heller, Jan (advisor) ; Harsa, Pavel (referee) ; Vomela, Jindřich (referee)
Title: Physical profile of judo athletes and its changes due to body weight reduction Aim of work: The aim of this study was to determine the effect of intensive pre-competitive body weight reduction on body composition, anthropometric parameters, postural stability, reaction time, maximal isometric muscle strength and biochemical parameters in the blood of elite judo athletes. Methods: The work compares the results of laboratory testing at the beginning and at the end of body weight reduction. Nine male judo athletes (age 22.3 ± 2.4 years) from the Czech national team participated in the research. For laboratory testing we used bioelectrical impedance analyser InBody 720, anthropometric equipment, pressure plate FootScan, dynamometer and apparatus for measuring reaction times of Biomedical laboratory UK FTVS and equipment for the collection of capillary and venous blood. We created a survey to gather more information about pre-competitive weight loss, attended by 53 competitors (37 men and 16 women, mean age 23.7 ± 3.2 years) who practise judo, wrestling Greco-Roman and freestyle, boxing, kickboxing, thaibox, taekwondo or karate. Results: We found a statistically significant (p<0.01) reduction of body weight, average weight loss was 4.6 % (on average 3.4 ± 1.6 kg). This reduction was reflected in...
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Pre-competition reduction of body weight in MMA
Hrdlička, Jaroslav ; Coufalová, Klára (advisor) ; Pavelka, Radim (referee)
Title: Pre-competition reduction of body weight in MMA Objectives: The main aim of this work was to identify what weight reduction methods are used by professional MMA fighters and how many kilograms they reduce before fights. We also wanted to determine the time they start to work with their body weight and whether they feel any psychological changes or fatigue due to weight reduction. We were also interested in what supplements fighters use during weight cut. Methods: A survey method was used for data collection. The research sample consisted of 20 professional MMA fighters between the ages of 18 and 40. Results: We have found out that MMA fighters usually reduce their weight through reduced caloric intake and subsequent dehydration the most. The majority of respondents reported a reduction of 6 to 10 kilograms in the course of 2 to 4 weeks before the fight. Respondents feel weakened during weight loss and experience psychological impacts such as irritation, mood swings, aggression and sedation. Before the fight, 60% of fighters do not experience any signs of weakness, as the time period from weighting to the fight itself is sufficient to allow them to regenerate. The most commonly used supplements during weight loss are BCAAs, fat burners, proteins, multivitamins and multiminerals. Keywords:...
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Physical profile of judo athletes and its changes due to body weight reduction
Coufalová, Klára ; Heller, Jan (advisor) ; Harsa, Pavel (referee) ; Vomela, Jindřich (referee)
Title: Physical profile of judo athletes and its changes due to body weight reduction Aim of work: The aim of this study was to determine the effect of intensive pre-competitive body weight reduction on body composition, anthropometric parameters, postural stability, reaction time, maximal isometric muscle strength and biochemical parameters in the blood of elite judo athletes. Methods: The work compares the results of laboratory testing at the beginning and at the end of body weight reduction. Nine male judo athletes (age 22.3 ± 2.4 years) from the Czech national team participated in the research. For laboratory testing we used bioelectrical impedance analyser InBody 720, anthropometric equipment, pressure plate FootScan, dynamometer and apparatus for measuring reaction times of Biomedical laboratory UK FTVS and equipment for the collection of capillary and venous blood. We created a survey to gather more information about pre-competitive weight loss, attended by 53 competitors (37 men and 16 women, mean age 23.7 ± 3.2 years) who practise judo, wrestling Greco-Roman and freestyle, boxing, kickboxing, thaibox, taekwondo or karate. Results: We found a statistically significant (p<0.01) reduction of body weight, average weight loss was 4.6 % (on average 3.4 ± 1.6 kg). This reduction was reflected in...
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Evaluation of performance of different size excavators
MACH, Milan
The aim of my thesis titled Evaluation of performance of different size excavators was to select five excavators ranked in different weight categories and subsequently to compare their actual performance. I monitored the actual length of one cycle on the basis of which the real performance of each excavator was determined. These results were mutually compared and summarized.
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