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[{"key": "dc.contributor.author", "value": "Ylipelkola, Essi", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2020-03-17T06:17:21Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2020-03-17T06:17:21Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2020", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/68200", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Johdanto. Adaptaatio on yksi sujuvan liikkumisen edellytys. Ihminen kohtaa p\u00e4ivitt\u00e4in hyvin erilaisia alustoja, joihin adaptoidutaan heti ensimm\u00e4isell\u00e4 askeleella. Ei ole tiedossa tutkimusta, jossa olisi tarkasteltu, miten v\u00e4sytys vaikuttaa alustan vaihtumiseen. T\u00e4m\u00e4n tutkielman tarkoituksena oli selvitt\u00e4\u00e4 adaptoituuko ihminen hyppimisalustan vaihtumiseen yht\u00e4 nopeasti ennen ja j\u00e4lkeen v\u00e4sytysprotokollan, joka on laskenut maksimaalista suorituskyky\u00e4.\nMenetelm\u00e4t. Mittauksiin osallistui seitsem\u00e4n (7) aktiivista ja perustervett\u00e4 tutkittavaa. Mittaukset suoritettiin pudotuskelkalla, jonka kulma oli 22,5 astetta. Alustan vaihtumista kovasta pehme\u00e4\u00e4n tutkittiin ennen ja j\u00e4lkeen v\u00e4sytysprotokollan. V\u00e4sytysprotokollassa tutkittavat hyppiv\u00e4t 60\u201370 % intensiteetill\u00e4 maksimaalisesta hyppimiskorkeudesta, kunnes heid\u00e4n kokemansa rasitus oli RPE-asteikolla 13 (hieman rasittava). Alustanvaihtumismittaus suoritettiin submaksimaalisella intensiteetill\u00e4. Siin\u00e4 tutkittavat hyppiv\u00e4t ensiksi kovalla alustalla seitsem\u00e4n (7) hyppy\u00e4. Seitsem\u00e4nnett\u00e4 kontaktia seuranneen lentovaiheen aikana alusta vaihdettiin pehme\u00e4\u00e4n, jolla jatkettiin seuraavat seitsem\u00e4n (7) hyppy\u00e4. Hyppimistaajuus vakioitiin metronomilla alustan vaihtumismittauksessa. Alustanvaihdoista tehtiin 2D-liikeanalyysi. Pudotuskelkassa ponnistus tapahtui voimalevylt\u00e4, joka mittasi maan reaktiovoimia (vGRF). Lis\u00e4ksi saatiin pulssianturilla tietoa kelkan hetkellisest\u00e4 liikkeest\u00e4, josta voitiin laskea matka. Analyysiss\u00e4 hy\u00f6dynnettiin jousi-massa-mallia.\nTulokset. V\u00e4sytysprotokolla aiheutti maksimaalisen hyppykorkeuden 4,34 \u00b1 5,53 % (p>0,05) pienentymisen. Minuutin palautuksen j\u00e4lkeen mitattu polven isometrinen ojennusvoima ei muuttunut ollenkaan (0,35 \u00b1 5,18 %). Alustan vaihtuminen ennen v\u00e4sytyst\u00e4 johti jalan j\u00e4ykkyyden 6,6 % (p>0,05) kasvamiseen. Submaksimaalisen v\u00e4sytysprotokollan j\u00e4lkeen jalan j\u00e4ykkyys oli kovalla ja pehme\u00e4ll\u00e4 alustalla l\u00e4hes samanlainen (ero -0,8 %, p>0,05). Alustan korkeuden muuttuminen alustan vaihdon yhteydess\u00e4 johti jalan j\u00e4ykkyyden pienentymiseen ensimm\u00e4isell\u00e4 kontaktilla pehme\u00e4ll\u00e4 alustalla. Jalan j\u00e4ykkyys kasvoi heti toiseen kontaktiin pehme\u00e4ll\u00e4 alustalla (p<0,05, PRE-mittaus), ja hyvin l\u00e4helle arvoja, jotka olivat my\u00f6hemmill\u00e4 kontakteilla.\nPohdinta ja johtop\u00e4\u00e4t\u00f6kset. Alustan vaihtumiseen adaptoiduttiin yht\u00e4 nopeasti ennen ja j\u00e4lkeen v\u00e4sytysprotokollan. Tulokset antavat kuitenkin pient\u00e4 viitett\u00e4 siit\u00e4, ettei alustan vaihtuminen v\u00e4syneen\u00e4 ole t\u00e4ysin verrannollinen alustan vaihtumiseen ilman v\u00e4sytyst\u00e4. Asia vaatii kuitenkin lis\u00e4tutkimusta, jossa jalan j\u00e4ykkyyden m\u00e4\u00e4rityksess\u00e4 k\u00e4ytett\u00e4v\u00e4t voima ja jalan kompressio ovat lineaariset, ja alustan korkeus ei muutu.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2020-03-17T06:17:21Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2020-03-17T06:17:21Z (GMT). No. of bitstreams: 0\n Previous issue date: 2020", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "67", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "adaptaatio", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "jousi-massa-malli", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "kinematiikka", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "v\u00e4sytys", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Hermolihasj\u00e4rjestelm\u00e4n adaptoituminen hyppimisalustan vaihtumiseen submaksimaalisen v\u00e4sytyksen j\u00e4lkeen", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202003172424", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Liikuntatieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sport and Health Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Liikunta- ja terveystieteet", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Sport and Health Sciences", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Biomekaniikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Biomechanics", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "5012", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "j\u00e4ykkyys", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "alustat", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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