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dc.contributor.authorOkkonen, Olli
dc.date.accessioned2014-03-24T19:38:05Z
dc.date.available2014-03-24T19:38:05Z
dc.date.issued2012
dc.identifier.otheroai:jykdok.linneanet.fi:1311481
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/43102
dc.description.abstractThe purpose of the present study was to compare kinetics, kinematics and muscle activity between sprint start, sled-pulling and selected squat type exercises and also to examine how different exercises and variables correlate with the performance time of the block start (10 m). Nine male athletes (4 sprinters, 3 decathlonists, 1 long jumper and 1 triple jumper; mean ± SD; age = 24.9 ± 3.9 yr; height = 180.4 ± 5.9 cm; weight = 80.3 ± 7.5 kg; 100 m record = 11.35 ± 0.29 s) performed measurements and different force-time, electromyographic (EMG) and kinematic variables were compared to sprint start. Most of the comparison was done to the block phase (the phase of force production towards starting blocks) of the block start. In nearly all exercises, the activity of the gluteus maximus (GM) was significantly (p≤0.05) higher than during the block phase. The opposite was true for the activation of the biceps femoris (BF). Ground reaction forces (GRF) were highest during the 1-RM (one repetition maximum) ½-squat (SMAX). The GRFs were also significantly (p≤0.05) larger during the countermovement jumps (CMJ) with different loads and during the ½-squat with 70 % of 1-RM (S70) as compared to the block phase. The angular velocity of the knee was significantly (p≤0.05) higher during CMJs than during the block phase. The highest correlation existed between the performance time in the block start (10 m) and the takeoff velocity during CMJ (r=-0.950, p≤0.05). According to the results of the present study, it can be suggested that to overload the force production (peak and average force) of the block phase, CMJs and ½-squats could be used in training. If the aim is to activate the GM intensively, almost all of the exercises analyzed in the present study seems to be suitable. The results also indicate that CMJs could be used as supra-velocity exercise for the knee joint in the training of the block start. In addition, the correlation analyses indicate the importance of a good performance in CMJs for a good performance in the block start.en
dc.format.extent1 verkkoaineisto (69 sivua)
dc.language.isoeng
dc.rightsThis publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited.en
dc.rightsJulkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty.fi
dc.subject.otherSprint start
dc.subject.othersquat
dc.subject.otherbiomechanics
dc.subject.otherEMG
dc.subject.otherpikajuoksu
dc.subject.otherbiomekaniikka
dc.titleBiomechanical comparison between sprint start, sled-pulling and selected squat type exercises
dc.identifier.urnURN:NBN:fi:jyu-201403241395
dc.type.ontasotPro gradufi
dc.type.ontasotMaster's thesisen
dc.contributor.tiedekuntaLiikuntatieteellinen tiedekuntafi
dc.contributor.tiedekuntaFaculty of Sport and Health Sciencesen
dc.contributor.laitosLiikuntabiologian laitosfi
dc.contributor.laitosDepartment of Biology of Physical Activityen
dc.contributor.yliopistoUniversity of Jyväskyläen
dc.contributor.yliopistoJyväskylän yliopistofi
dc.contributor.oppiaineValmennus- ja testausoppifi
dc.contributor.oppiaineScience in Sport Coaching and Fitness Testingen
dc.date.updated2014-03-24T19:38:06Z
dc.rights.accesslevelopenAccessfi
dc.contributor.oppiainekoodi5013
dc.subject.ysojuoksulajit
dc.subject.ysotekniikka
dc.subject.ysobiomekaniikka
dc.subject.ysopikajuoksu
dc.subject.ysoharjoittelu


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