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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Ilgalaikių greitumo ir jėgos fizinių krūvių įtaka griaučių raumenų anaerobiniam pajėgumui / Permanent quickness and power manual loads influence on skeleton muscle anaerobic potential

Šerpytis, Dainius 31 May 2006 (has links)
Work purpose – to determine permanent quickness and power manual loads influence on skeleton muscle anaerobic potential. 11 of the best Lithuanian short distance runners and 8 persons, who do not go in for sports, were attending in research. Also, there were used adequate testing results and trainings processes information of 8 world short distance runners. They took anthropometrical information measurements from researched, body mass index was estimated (BMI), maximum and comparative legs muscles power was assessed, maximum running and 60m drubbing speed measured. Gained results showed that the best world short distance runners reached better maximum running speed, but maximum and comparative muscles power indicators were not differ from Lithuanians short distance runners. Persons, who do not go in for sports, maximum and relative powers and maximum running speed meaning in worse than researched Lithuanian short distance runners, who go in for sports. When they were running 60m only 10m they were going faster than the best world short distance runners. Persons, who do not go in for sports run 60m distance slower than other researched group members. They also reached slower speed increase and after 50m they got tired. When the best Lithuanian short distance runners of annual training facts were analyzed then came out that in annual training cycle was applied more exercises which needed power and had higher power indicators. Thus, Lithuanian short distance runners faster run 6... [to full text]
2

Skirtingo amžiaus ir lyties orientacininkų kojų raumenų galingumas ir vargstamumas atliekant vertikalius šuolius / Muscle power and fatigue resistance during vertical jumping in orienteers of different age and gender

Jusas, Giedrius 16 August 2007 (has links)
Tyrimo tikslas – nustatyti įvairaus amžiaus ir lyties orientacininkų kojų tiesiamųjų raumenų galingumą ir atsparumą nuovargiui vertikalaus šuoliavimo testo metu. Buvo ištirti 92 orientacininkai, pagal amžių (metais) ir lytį (moteriška, M; vyriška, V) suskirstyti į šešias grupes: M15–17 merginos (n = 19), M18–20 merginos (n = 9), M>21 moterys (n = 4), V15–17 jaunuoliai (n = 21), V18–20 vaikinai (n = 18), V > 21 vyrai (n = 21). Vertikalių šuolių aukštį matavome pagal C. Bosco metodiką. Po standartinės pramankštos tiriamieji ant 60x60 cm dydžio kontaktinio kilimėlio atliko po tris vienkartinius maksimalių pastangų vertikalius šuolius su rankų mostu ir be mosto, o paskui 60 s šuoliavo maksimaliomis pastangomis, amortizuojamai pritūpdami iki 90° kampo per kelius (rankas laikydami ant juosmens). Vienkartinio vertikalaus šuolio aukštis (taigi ir kojų tiesiamųjų raumenų galingumas) nepriklausė nuo amžiaus, tačiau visose amžiaus grupėse vyriška lytis tiriamieji pašokdavo aukščiau. Lyginant orientacininkių gebėjimą aukštai pašokti su rankų mostu ir be mosto, reikšmingus pašokimo aukščio skirtumus nustatėme 15–17 ir 18–20 metų amžiaus orientacininkių grupėse, o tarp orientacininkų šis skirtumas buvo reikšmingas visose amžiaus grupėse (p < 0,001). Išanalizavę šuolių aukščio kaitą 1 min. šuoliavimo testo metu pastebėjome, kad statistiškai reikšmingi vargstamumo skirtumai amžiaus aspektu buvo tik tarp M15–17 ir M18–20 grupių (p < 0,05), o lyties aspektu – tarp M15–17 ir V15–17 grupių... [toliau žr. visą tekstą] / The aim of the study was to estimate vertical jumping performance in orienteers of various age and both sexes. The study embraced 92 orienteers of national level. According to age (years) and gender (males, M; females, F), six groups of athletes were singled out: F15–17 (n = 19), F18–20 (n = 9), F>21 (n = 4), M15–17 (n = 21), M18–20 (n = 18), and M>21 (n = 21). After a standard warm-up, subjects performed maximal intensity vertical jumps on the contact mat sized 60x60 cm. After orienteers made jumps with and without arm swing (3 attempts each), all-out vertical jumps for 60 sec with a shock-absorbing squat to 90° knee angle, arms akimbo, were performed. The jump height was measured according to C. Bosco et al., using a flight-phase time as a sole indicator. There were no statistically significant differences in the height of the single vertical jump between age groups, irrespectively of the gender. However, statistically significant differences were observed in the height of the single vertical jump in all age groups in respect to gender. The comparison of vertical jumps performed by females with and without arm swing revealed statistically significant difference only between F15–17 and F18–20 groups, while the difference in jump height between two modes was statistically significant in male orienteers of all age groups (p < 0.001). F15–17 and F18–20 groups differed in respect to fatigue index during 60 sec test (p < 0.05). The different fatigue index was observed in respect... [to full text]

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