Ten subjects were randomly assigned to train one arm with ballistic movements (BT), whereas the other arm trained with ballistic and heavy resistance movements (BT+HRT). The training program consisted of three training sessions per week, over a ten week period. The BT arm executed ten sets of six maximal ballistic elbow extension actions (10% MVC), whereas the BT+HRT arm executed five sets of six repetitions of maximal ballistic actions followed by five sets of five to eight repetitions of heavy resistance elbow extension actions. After training, evoked twitch contractile properties, ballistic, 1 RM, and isometric MVC measures were analyzed. Incorporated with all performance measures were EMG recordings of the agonist (AG) triceps and antagonist (ANT) biceps. Muscle biopsies of triceps were also taken to determine muscle fibre type composition, and fibre area. The BT+HRT arm demonstrated a significant decrease in the percent population of type IIb fibres (22% to 18. 8%). Furthermore, the BT+HRT arm produced hypertrophy, type IIa (6184 to 7086 μm²) and IIb (5714 to 6734 μm²) fibre areas increased, whereas type I fibre areas (3503 to 3828 μm²) did not significantly increase, after training. In contrast, the BT arm and control arm did not display fibre transformation or hypertrophy after training. Triceps evoked twitch peak torque increased for only the BT+HRT arm (12.5 to 13.8 N·m). Furthermore, the 1 RM increased significantly in the BT+HRT arm (~24%) but did not change significantly in the BT arm. However, ballistic and isometric MVC PT values increased similarly in both the BT (19.6 to 23.5 N·m; 45.4 to 52.6 N·m) and the BT+HRT (19.6 to 23.6 N·m; 49.6 to 56.0 N·m) arms. The EMG results corresponded to the performance results in that triceps AEMG in the 1 RM test tended to increased more after HRT (0.71 to 1.01 mV) than only BT (0.72 to 0.81 mV), but in the ballistic (HRT= 0.63 to 0.79 mV; BT= 0. 62 to 0. 73 mV) and isometric MVC performance measures (HRT= 0.80 to 0.84 mV; BT= 0.80 to 0.87 mV), the AEMG results were similar. Supplementary HRT caused muscle hypertrophy, particularly of the type II fibres, but did not promote improvement in ballistic performance with loads equal to or less than 10% of maximal isometric force. / Thesis / Master of Science (MS)

Didelio meistriškumo krepšininkų ugdymo krūvių išdėstymo racionalumas rengimo makrocikle ir jų įtaka jėgos greitumo rodiklių kaitai išlieka aktualia šiai dienai tyrimo problema. / The rationality of arrangement of educational loads of highly skilled basketball players during preparation macrocycle and their influence on the variation of indices of speed power remains the relevant research problem nowadays.

This graduation thesis dwells on a worm gear design for an elevator mechanism in an already existing wheel case with actuator unit S3 for elevator type BOV 320/0,63. The work includes dimensional and control calculation for the worm gear and as an attachment you will find spiral worm and worm gear drawing documentation, including its specific location.

Объект исследования – процесс контроля за развитием скоростно-силовых способностей спортсменов различных половозрастных групп. Предмет исследования – возрастная динамика показателей Вингейт-теста спортсменов различного пола и возраста. Цель исследования – определить возрастную динамику показателей Вингейт-теста спортсменов различных половозрастных групп. В результате исследования были изучены особенности скоростно-силовых способностей и их значимость в спортивной деятельности, в результате проведенного тестирования выявлены нормативные показатели развития скоростно-силовых способностей спортсменов разного пола и возраста. Научная новизна исследования: впервые выявлены нормативные значения показателей Вингейт-теста и их динамика для разных половозрастных групп спортсменов: показатели МАМ, скоростной выносливости, а также время достижения пика мощности. Выявлены высокие и недостаточные значения показателей скоростно-силовых способностей для некоторых видов спорта. Практическая значимость работы: определены рекомендованные нормативные показатели Вингейт-теста для спортсменов разных половых и возрастных групп, а также высоких и недостаточных показателей скоростно-силовых способностей спортсменов разных видов спорта. / Study object – control of speed-power abilities of athletes of various age-gender groups. Study subject – age dynamics of Wingate test indicators in athletes of different age and gender. The aim of the proposed research was to determine age dynamics of Wingate-test indicators in athletes of different age-gender groups. Peculiarities of speed-power abilities were studied, as well as its significance in sports practice. We found the normal values of speed-power abilities development in athletes in reference to age and gender. Scientific value: norms of Wingate test parameters (peak power, speed-power endurance and time to peak power attainment) and their dynamics in age-gender groups were found. High and insufficient values of this parameters were determined for some kinds of sports. Practical value: we determined the recommended norms of Wingate test indicators for athletes of different age and gender groups, as well as high and insufficient values of speed-power abilities indicators for athletes from different kinds of sports.