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The utilization of isokinetic dynamometer for the measurement and evaluation of muscle strength of lower limbs in athletes
Přidalová, Tereza ; Janoušek, Oto (referee) ; Chlíbková, Daniela (advisor)
Izokinetická dynamometrie je moderní metodou pro hodnocení svalové síly. Nejvíce se využívá pro posouzení tréninkového efektu během určitého období a pro rehabilitační účely. Kliničtí lékaři, vědci a fyzioterapeuti obvykle využívají pouze základních parametrů pro vyhodnocení svalové síly. Cílem této práce je tedy navrhnout alternativní přístup pro interpretaci dat a předložit možné využití a limitace této metody. Byl měřen moment síly v kolenním kloubu a následně provedena datová analýza. Patnáct parametrů je využito pro vyhodnocení dat. Moment síly byl porovnán mezi profesionálními sportovci (muži: 111.1 ± 51.0 [Nm/kg], ženy: 99.6 ± 90.8 [Nm/kg]) a amatérskými sportovci (muži: 146.2 ± 40.1 [Nm/kg], ženy: 45.3 ± 14.6 [Nm/kg]). Vztah byl pozorován mezi parametry úhlové pozice maxima a dobou od dosažení maxima do konce pohybu (flexe: = 0.65, extenze: = 0.71) a mezi úhlovou pozicí maxima a poměrem vykonané práce před maximem (flexe: = 0.91 extenze: = 0.86). Parametr práce v submaximální oblasti byl vyšší pro extenzi (median= 3.0 J) než pro flexi (median= 2.6 J).
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Diagnosis and analysis of lower limb muscles of acrobatic rock and roll dancers
Palivcová, Nikola ; Kozáková, Alena (advisor) ; Kolbová, Kateřina (referee)
Title: Diagnosis and Analysis of Lower Limb Muscles in Acrobatic Rock and Roll Dancers Objectives: The aim of the thesis is to determine the occurence of possible muscle imbalances, lateral and functional asymmetries in acrobatic rock and roll dancers which may be caused by unilateral loading in this sport and based on diagnostics and training recommendations to prevent the risk of injury or damage the musculoskeletal system. Methods: The final thesis is processed as an observational case study and the project is implemented as quantitative research using paired comparison. The results are statistically processed and interpreted using descriptive analysis. The main method of measurement is isokinetic dynamometry on the Humac Norm Dynamometer. Results: Based on the individual measurement results and the subsequent statistical evaluation of the data, the research question is answered: "Due to unilateral loading in acrobatic rock and roll dancers muscle imbalances and lateral and functional asymmetries in the muscles of the lower limbs arise." At the beginning of the research three hypotheses were established, first was confirmed, the lowest flexion-extension symmetry was 17 % in the left limb. The second hypothesis was also confirmed, the highest extension value of the left limb was 171 Nm, while the...
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The impact of speed during isocinetic contraction for strength ratios of m. quadriceps to hamstrings in youth soccer players U15-19
Trýzna, Jakub ; Šťastný, Petr (advisor) ; Kokštejn, Jakub (referee)
Title: The impact of speed during isocinetic contraction for strength ratios of m. quadriceps to hamstrings in youth soccer players U15-19 Objectives: The objectives of this bachelor thesis is to find out a relative strength ratios of m. quadriceps to hamtrings of both lowr limbs by means of isocinetic dynamometry using a Cybex device. Methotds: Isocinetic dynamometry was used for an assignmnent of strength abilities using a Cybex device. Agility tests were used for an assignment of speed. Results: H/Q strength ratios were icreased with icreasing angular speed. Muscular strength itself decreased by increasing speed of muscular contraction both in flexion and extensit. Keywords: Peak torque, izocinetic dynamometry, soccer, training
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The utilization of isokinetic dynamometer for the measurement and evaluation of muscle strength of lower limbs in athletes
Přidalová, Tereza ; Janoušek, Oto (referee) ; Chlíbková, Daniela (advisor)
Izokinetická dynamometrie je moderní metodou pro hodnocení svalové síly. Nejvíce se využívá pro posouzení tréninkového efektu během určitého období a pro rehabilitační účely. Kliničtí lékaři, vědci a fyzioterapeuti obvykle využívají pouze základních parametrů pro vyhodnocení svalové síly. Cílem této práce je tedy navrhnout alternativní přístup pro interpretaci dat a předložit možné využití a limitace této metody. Byl měřen moment síly v kolenním kloubu a následně provedena datová analýza. Patnáct parametrů je využito pro vyhodnocení dat. Moment síly byl porovnán mezi profesionálními sportovci (muži: 111.1 ± 51.0 [Nm/kg], ženy: 99.6 ± 90.8 [Nm/kg]) a amatérskými sportovci (muži: 146.2 ± 40.1 [Nm/kg], ženy: 45.3 ± 14.6 [Nm/kg]). Vztah byl pozorován mezi parametry úhlové pozice maxima a dobou od dosažení maxima do konce pohybu (flexe: = 0.65, extenze: = 0.71) a mezi úhlovou pozicí maxima a poměrem vykonané práce před maximem (flexe: = 0.91 extenze: = 0.86). Parametr práce v submaximální oblasti byl vyšší pro extenzi (median= 3.0 J) než pro flexi (median= 2.6 J).
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The comparison and identification of strength abilities among elite footballers depending on ontogenesis
Kroupa, Jakub ; Malý, Tomáš (advisor) ; Kokštejn, Jakub (referee)
Title: The comparison and identification of strength abilities among elite footballers depending on ontogenesis. Objectives: The aim of this work is to compare the explosive power of the lower limbs and the isokinetic power of the knee extensor and knee flexor of elite football players in cathegories U16, U18 and U21 of the club SK Slavia Praha. Method: Our work is based on using the comparative method. The respective method of comparison is used in the section related to results., in which we compare the achieved strenght abilities of each category in the vertical jump tests and the isokinetic dynamometer tests. The research team were young players (n46) from three age-old categories U16 (15 players), U19 (17 players) and U21 (14 players). The results: The result of the study is a finding that the performance of the individual categories in the vertical jump tests within the maximum power achieved is very balanced, but the best average results in the maximum height were found at U21 team. The order of the individual categories is not the same as the maximum height achieved in the vertical jump. Another finding is that for U21 players compared to younger categories, we observe weaker achievements with greater performance differences between between the muscle groups of flexor and the knee...
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The impact of speed during isocinetic contraction for strength ratios of m. quadriceps to hamstrings in youth soccer players U15-19
Trýzna, Jakub ; Šťastný, Petr (advisor) ; Kokštejn, Jakub (referee)
Title: The impact of speed during isocinetic contraction for strength ratios of m. quadriceps to hamstrings in youth soccer players U15-19 Objectives: The objectives of this bachelor thesis is to find out a relative strength ratios of m. quadriceps to hamtrings of both lowr limbs by means of isocinetic dynamometry using a Cybex device. Methotds: Isocinetic dynamometry was used for an assignmnent of strength abilities using a Cybex device. Agility tests were used for an assignment of speed. Results: H/Q strength ratios were icreased with icreasing angular speed. Muscular strength itself decreased by increasing speed of muscular contraction both in flexion and extensit. Keywords: Peak torque, izocinetic dynamometry, soccer, training
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