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Body composition of the Czech national snowboardcross team
Hanko, Michal ; Bunc, Václav (advisor) ; Kinkorová, Ivana (referee)
Title: Body composition of the Czech national snowboardcross team Objectives: The aim of this work is to measure and evaluate body composition as a factor influencing sports performance in the Czech snowboardcross team and comparison with relevant data of foreign authors. Methods: We evaluated body composition data using whole-body BIA analysis (Bodystat 1500 monofrequency analyzer in the field), anthropometric examination (height, weight) and waist-hip ratio, indicating the risk of cardiovascular disease. At the same time, we recorded the age and length of training of snowboarders. We used statistical operations (arithmetic mean, standard deviation, minima and maxima, statistical and material significance) for data analysis. We also compared the data with the relevant results of national teams of Italy and the USA (Vernillo et al., 2016; Sands et al., 2021) and data from the untrained population (Schutz et al., 2002; Abe et al., 2018). Results: We found that the average BMI of the Czech national team in snowboarding is 24.49 ± 1.8 kg/m2 (men) and 23.95 ± 0.94 kg/m2 (women). The mean WHR is 0.8 ± 0.03 (males) and 0.72 ± 0.04 (females). The Czech representatives significantly (p ˂ 0.05) and materially (d ≥ 0.8) differ significantly from the untrained population in FFMI values of 21.6 ± 1.1 kg/m2...
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Influence of acute stretching on strength predispositions in snowboardcross
Hanko, Michal ; Bunc, Václav (advisor) ; Suchý, Jiří (referee)
Title: Influence of acute stretching on strength predispositions in snowboardcross Objectives: The aim of the work is to evaluate two effects of stretching - static and dynamic on the strength assumptions of the lower extremities by modifying the Bosco test in a group of 3 athletes in the snowboardcross discipline. Methods: Power Measurement in Bosco's Test Modification (3 series jumps of 20 seconds with a 20-second pause) after 5 minutes of warm-up on the bike ergometer (1.5W/kg) and application of a predetermined static or dynamic stretch (approximately 14 minutes). The probands are 3 male athletes in the snowboardcross discipline, aged from 16 to 23 years. Their fitness training consists of a gym 3 times a week (60-90min), gymnastics twice a week (90 min) and an individual evening stretching to develop flexibility at least 3 times a week (30 min). In the off-season, athletic training once a week (60 min). Measured values are - jump count, flight phase time in seconds, contact phase time in seconds, average power expressed in watts, and power drop in percent. Results: We found that two types of stretching - dynamic and static - have different effects on performance in the Bosco test modification. Significantly better results were achieved after application of dynamic stretching. In average...
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Influence of acute stretching on strength predispositions in snowboardcross
Hanko, Michal ; Bunc, Václav (advisor) ; Suchý, Jiří (referee)
Title: Influence of acute stretching on strength predispositions in snowboardcross Objectives: The aim of the work is to evaluate two effects of stretching - static and dynamic on the strength assumptions of the lower extremities by modifying the Bosco test in a group of 3 athletes in the snowboardcross discipline. Methods: Power Measurement in Bosco's Test Modification (3 series jumps of 20 seconds with a 20-second pause) after 5 minutes of warm-up on the bike ergometer (1.5W/kg) and application of a predetermined static or dynamic stretch (approximately 14 minutes). The probands are 3 male athletes in the snowboardcross discipline, aged from 16 to 23 years. Their fitness training consists of a gym 3 times a week (60-90min), gymnastics twice a week (90 min) and an individual evening stretching to develop flexibility at least 3 times a week (30 min). In the off-season, athletic training once a week (60 min). Measured values are - jump count, flight phase time in seconds, contact phase time in seconds, average power expressed in watts, and power drop in percent. Results: We found that two types of stretching - dynamic and static - have different effects on performance in the Bosco test modification. Significantly better results were achieved after application of dynamic stretching. In average...
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