Serum Concentrations of Myostatin and Myostatin-Interacting Proteins do not differ between young and Scarcopenic elderly men

Peer reviewedPostprin

Kaunas ice hockey clubs “Kauno tigrai” and “Baltų ainiai” physical test results analysis

The object of researches - analysis of hockey teams. The aim - to compare the former children's hockey team, „Kaunas Tigrai“ and nowadays children's team \"Baltų Ainiai\" general physical preparation tests. Research objectives: 1. To identify and compare „Kauno Tigrai“ and „Baltų Ainiai“, 20 meters from the first skating motion results. 2. Identify and compare „Kauno Tigrai“ and „Baltų Ainiai“ 20 meters cruising speed skating results. 3. Identify and compare „Kauno Tigrai“ and „Baltų Ainiai“ high jump with a hand gesture results. 4. Identify and compare „Kauno Tigrai“ and „Baltų Ainiai“ 20 meters backwards skating results. Methods: 1. Analysis of literature sources; 2. Testing results analysis; 3. Power measurement procedure; 4. Time recording methods. Research results: It was found that in all age groups compared stage speed from the start, cruising speed, jump from place up and backwards sliding of a statistically significant (p <0.05) better results were of “Kaunas Tigrai”. Conclusions: 1. “Kauno Tigrai” 20 meters from the first skating motion results in various age groups differed significantly (8, 11-12 years), and was higher than the “Baltų Ainiai”. 2. „Kauno Tigrai“ 20 meter cruising speed skating results significantly higher 8-10, 11 and 12-year-old stage, the difference between the results for all age groups differed significantly. 3. The results of „Kauno Tigrai“ of jump with hand gesture significantly higher 9, 11 and 12-year-old stage and was higher than the „Baltų Ainiai“. 4. \"Kauno Tigrai“ skating backwards statistically significantly higher than the „Baltų Ainiai\" being tested in all age groups

Arthroscopic Coracoid Transposition for Recurrent Shoulder Anterior Instability. An Operative Technique

We report a technique of an arthroscopic concomitant Bankart repair with a transfer of the coracoid bone block and conjoint tendons for revision anterior shoulder instability. The operative procedure consists of an arthroscopic transfer of the conjoined tendon with a coracoid and arthroscopic Bankart repair. First, a typical Bankart suture anchor procedure with two suture anchors was performed into the antero-inferior part of the glenoid rim. After, tenodesis of the coraco-biceps tendon was performed in the middle of the subscapularis tendon fixing the coracoid bony fragment into a glenoid socket with a bioabsorbable interference screw. This operative technique is an alternative in the treatment of revision anterior shoulder instability in patients with deficient anterior capsule

Impact of single bout of physical exercise on adolescents’ strength and balance abilities

Background. There is evidence of physical exercise effect on the adolescents’ balance and strength; however it is not known how aforementioned variables respond to physical exercise with different loads and intensities. Therefore, the aim of the study was to assess the impact of single bout of physical exercise of different intensity on adolescents’ body balance and muscular strength. Methods. Thirty healthy, physically active 11–13-year-old adolescents were randomly allocated to one of the two groups. Both groups performed single bout of physical exercise of high- or low-intensity climbing up and downstairs. Postural sway and maximum voluntary contractions (MVC) were assessed before and after physical exercise. Results. No statistically significant impact of low or high intensity exercise was found at adolescents’ MVC. High intensity exercise influenced bigger postural sway with eyes closed compared to eyes open (p<.05). After high-intensity exercise there was a significantly greater postural sway with eyes closed than with eyes open (p<.05). Conclusions. High and low intensity physical exercise had no impact on the adolescents’ maximum voluntary contraction, whereas high intensity exercise deteriorated body balance with eyes closed

Change of sport results and special speed, force-speed tests results in elite long jump athletes

Bibliogr. str. galeThe aim of the research was to establish interrelation between Lithuanian elite long jump athletes' competition results and special tests, also to clarify their change. The metods of the research: 1. Pedagogical analysis of competition results. 2. Testing. 3. Biomechanical methods. 4. Mathematical statistics. Individual sport results of long jump athlete T. B. during eight years were in wavy change. This uneven tendency between competition results quantitative indices has increased when reaching elite perfomance levelLietuvos kūno kultūros akademijaVytauto Didžiojo universitetasŠvietimo akademij

Dynamics of the results of Lithuanian national team of track and field women-athlete round events during the 1999-2003 European Cup

Research object was to analyze general consistent patterns and individual peculiarities of the dynamics of results of Lithuanian National Team of track and field women-athletes round events during the 1999-2003 European Cup. Data was received following the method of analysis of the literature sources and comparative pedagogical analysis of the competition results allow stating that Lithuanian heptathlon women-athletyes are young and promising, however big difference in mastery of individual athletes do not guarantee the possibility to compete in the first league of the European CupLietuvos kūno kultūros akademijaVytauto Didžiojo universitetasŠvietimo akademij

Knee Flexors and Extensors during Fatiguing Exercise and Recovery a Period of Sixs Months for Cadets at General Jonas Zemaitis Military Academy of Lithuania

The aim of the study - to establish the influence of muscles for period of six months for cadets at General Jonas Zemaitis Military Academy of Lithuania. The participants of the study were 14 healthy males, aged 19,5±1,5 years; height — 181,5±4,4; weight in autumn — 76,0±7,1; weight in spring — 75,9±7,2 , with no history of knee ligament. The study was performed in the human motoric laboratory of Lithuanian Academy of Physical Education in the year 2005 / 2006. The participants of the study were seated in isokinetic dynamometer (Biodex Medical System PRO 3) and positioned when the hip joint is at 90 degrees. In the control panel the isokinetic regimen was selected. The type of concentric contraction is automatically established by the system exercising in this regimen

Discipline-specific Torque-Velocity Profiles and Musculotendinous Morphology in Athletes

Objectives: The aim of this study was to compare torque-velocity profiles, muscle architecture, tendon dimensions, and bilateral-symmetry between competitive cyclists (CY), competitive runners (RN), ice-hockey players (IH), basketball players (BP), and physically-active individuals (CN) (n=10 for each group). Methods: Vastus lateralis (VL) muscle and patellar tendon (PT) structures were determined with B-mode ultrasonography, and maximal knee extensor isokinetic torque was assessed at three different velocities. Results: Optimal torque and velocity were lower in runners than CY, BP and IH (p<0.05). Maximal power was similar between the athlete groups but greater than CN (p<0.05). Furthermore, RN and BP reached their peak-torque at longer muscle lengths compared to IH and CY (p<0.05). RN had the lowest VL muscle thickness and the greatest fascicle length, while CY had the greatest pennation angle (p<0.05). CY had the greatest PT thickness, particularly at the proximal and medial sites, while BP at the distal point (p<0.05), with similar trends observed for PT cross-sectional-area. Conclusions: Our findings show that even if power generating capacity is similar between athletic disciplines, there are discipline-specific muscle adaptations, where particularly runners appear to have muscles adapted for speed rather than torque development, while in cyclists, velocity is sacrificed for torque development

Repeated bout effect was more expressed in young adult males than in elderly males and boys

This study investigated possible differences using the same stretch-shortening exercise (SSE) protocol on generally accepted monitoring markers (dependent variables: changes in creatine kinase, muscle soreness, and voluntary and electrically evoked torque) in males across three lifespan stages (childhood versus adulthood versus old age). The protocol consisted of 100 intermittent (30 s interval between jumps) drop jumps to determine the repeated bout effect (RBE) (first and second bouts performed at a 2-week interval). The results showed that indirect symptoms of exercise-induced muscle damage after SSE were more expressed in adult males than in boys and elderly males, suggesting that the muscles of boys and elderly males are more resistant to exercise-induced damage than those of adult males. RBE was more pronounced in adult males than in boys and elderly males, suggesting that the muscles of boys and elderly males are less adaptive to exercise-induced muscle damage than those of adult males