Kinematic differences between three wheelchair racers (T54) in sprint start

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dc.contributor.author Järveläinen, Katariina
dc.date.accessioned 2010-11-01T13:01:12Z
dc.date.available 2010-11-01T13:01:12Z
dc.date.issued 2008
dc.identifier.uri http://hdl.handle.net/123456789/25523
dc.description.abstract This study examined kinematic differences between wheelchair racers (T54) in sprintstart. Three male elite disabled athletes performed maximum trials four times, 80 % ofmaximum and 60 % of maximum two times. Two-dimensional motion analysis wasused to study the fastest trial (100 % of Max) and the closest trial to the 80 % of Maxand 60 % of Max. The kinematic variables measured were: a) timing parameters; pushtime, recovery time and cycle time, b) linear velocities; the velocity of the wheelchair,the wrist and the elbow velocities in different cycles in the different trials c) angularparameters; trunk and shoulder angle and trunk angular velocity, contact angle andrange of push angle and d) the point of contact and release.In this case study it was found that the racer with more velocity had smaller time on thepropulsive phase and increased forward body movement in relation to the axle of wheelat start. In addition, the racer with more velocity had larger velocity of the wrist in theend of the recovery phase and had larger velocity of the elbow in the beginning of thepropulsive phase.The sample sizes within a disability classification are quite small and limitgeneralisations which could be made about the findings to the population underconsideration. Moreover, the differences in the testing modes and protocols makecomparisons among different studies difficult. However, results demonstrate that thekinematic variables recorded prior to contact and on hand contact with the pushrim aremore important in developing more efficient racing wheelchair propulsion. The resultsof this study indicate a need to educate coaches of wheelchair track athletes concerningthe most efficient start technique of racing wheelchair propulsion. en
dc.language.iso eng
dc.rights This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. en
dc.rights Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty. fi
dc.title Kinematic differences between three wheelchair racers (T54) in sprint start en
dc.type Book en
dc.identifier.urn URN:NBN:fi:jyu-201011013026
dc.type.dcmitype Text en
dc.type.ontasot Pro gradu fi
dc.type.ontasot Master’s thesis en
dc.contributor.tiedekunta Liikuntatieteellinen tiedekunta fi
dc.contributor.tiedekunta Faculty of Sport and Health Sciences en
dc.contributor.laitos Liikuntabiologian laitos fi
dc.contributor.laitos Department of Biology of Physical Activity en
dc.contributor.yliopisto University of Jyväskylä en
dc.contributor.yliopisto Jyväskylän yliopisto fi

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