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[{"key": "dc.contributor.author", "value": "Jaakkola, Elina", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2023-06-14T07:07:44Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2023-06-14T07:07:44Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2023", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/87735", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Joukkuelajeissa kertyv\u00e4\u00e4 iskukuormitusta on tutkittu erilaisilla antureilla ja epidemiologista tietoa on yhdistetty videokuvaan tilanteista. Tutkimukset osoittavat, ett\u00e4 amerikkalaisessa jalkapallossa tulee muihin lajeihin verrattuna kovempia iskuja pelitilanteissa. T\u00e4m\u00e4n tutkimuksen tarkoituksena oli selvitt\u00e4\u00e4 amerikkalaisen jalkapallon peleiss\u00e4 tulevaa iskukuormitusta suomalaisessa naisjoukkueessa eri pelipaikoilla, sek\u00e4 millaisissa pelitilanteissa iskuja pelaajille tulee.\n\nTutkimuksessa seurattiin yhden Suomen korkeimmalla tasolla amerikkalaista jalkapalloa pelaavan naisjoukkueen saamaa iskukuormitusta kauden 2022 aikana. Pelaajat (n=22) olivat i\u00e4lt\u00e4\u00e4n 21\u250044-vuotiaita ja heid\u00e4n kokemuksensa oli 2\u250015 pelivuotta. Pelaajien kyp\u00e4riin kiinnitettiin Northern Sports Insight and Intelligence Oy:n anturi ACT Head Impact Tracker, joka yhdistettiin \u00e4lylaitteen sovellukseen. Anturi tallensi tiedot kertyneist\u00e4 iskuista. Anturin tallentamat tiedot iskuista pyrittiin yhdist\u00e4m\u00e4\u00e4n videokuvaan peleist\u00e4. T\u00e4m\u00e4 osoittautui ennakoitua haastavammaksi, joten aineistoksi saatiin kuusi videokuvalla varmistettua iskua. Videoanalyysin lis\u00e4ksi anturin tallentamasta aineistosta muodostettiin histogrammit, joissa kuvattiin iskujen lukum\u00e4\u00e4r\u00e4 ja intensiteetti (g) pelipaikoittain.\n\nAnalyysissa saatiin varmennettua videolta yhteens\u00e4 kuusi yksitt\u00e4ist\u00e4 iskua, jotka kaikki kohdistuivat keskushy\u00f6kk\u00e4\u00e4j\u00e4\u00e4n pallonkantotilanteessa. Kaikissa tilanteissa keskushy\u00f6kk\u00e4\u00e4j\u00e4 tulee taklatuksi vastustajan toimesta ja keskushy\u00f6kk\u00e4\u00e4j\u00e4n p\u00e4\u00e4 osuu joko vastustajaan, maahan tai molempiin. Histogrammeista k\u00e4y ilmi, ett\u00e4 kokonaisuudessaan puolustajat saivat enemm\u00e4n iskuja kuin hy\u00f6kk\u00e4\u00e4j\u00e4t. Puolustuksen pelaajista tukimiehet ja hy\u00f6kk\u00e4yksen pelaajista keskushy\u00f6kk\u00e4\u00e4j\u00e4t saivat eniten kovia iskuja. Paljon lievi\u00e4 iskuja saivat laitahy\u00f6kk\u00e4\u00e4j\u00e4t, keskushy\u00f6kk\u00e4\u00e4j\u00e4t, tukimiehet sek\u00e4 hy\u00f6kk\u00e4yksen ja puolustuksen linjapelaajat. V\u00e4hiten iskuja saivat pelinrakentajat ja puolustuksen takakent\u00e4n pelaajat.\n\nTutkimuksessa havaittiin, ett\u00e4 kokonaisuutena puolustuksen pelaajat saivat enemm\u00e4n iskuja kuin hy\u00f6kk\u00e4yksen pelaajat. T\u00e4m\u00e4 on tullut esille my\u00f6s aiemmassa tutkimuskirjallisuudessa. Keskushy\u00f6kk\u00e4\u00e4j\u00e4n saamat iskut ovat pelipaikalle tyypillisi\u00e4 sek\u00e4 iskutapahtuman, ett\u00e4 intensiteetin osalta. Jatkotutkimusta iskukuormituksesta tarvitaan, jotta pelaajien harjoittelua pystytt\u00e4isiin ohjaamaan paremmin oman pelipaikan vaatimuksiin iskukuormituksen osalta ja toisaalta iskujen aiheuttamia haittoja pystytt\u00e4isiin v\u00e4hent\u00e4m\u00e4\u00e4n.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "The impact load experienced in team sports has been studied with different kind of sensors and epidemiologic information has been connected to the video footage from the situations. The studies demonstrate that in American football players get harder impacts compared to other sports in game situations. The purpose of this study was to discover the impact load Finnish women\u2019s American foot team experienced in their games. The study investigated different playing positions and types of situations where the players experienced the impacts.\n\nIn this study, one women\u2019s team, which plays American football at the highest level in Finland, was followed during the season 2022 in terms of the impact load. Players (n=22) were aged between 21\u250044 and they had playing experience from 2 to 15 years. In each player\u2019s helmet, a Northern Sports Insight and Intelligence Company\u2019s sensor called ACT Head Impact Tracker was attached. The sensor was connected to a smart phone application and the sensor recorded all the information from the impacts. The data recorded by the sensor was then matched with the video footage from the games where the impacts occurred. This proved to be more challenging than expected. At the end, there were six impacts that we were able to match to the video footage of the occurrence. In addition to video analysis, histograms were built from the data that the sensors had been recording. Histograms include the number and the intensity (g) of the impacts recorded for each playing position.\n\nIn the analysis, six separate impacts were matched to the video footage - all of these impacts being recorded for the running back in ball carrying situations. In each of these situations, the running back gets tackled by the opponent and her head hits either to the opponent, to the ground or both. From the histograms we can determine that as a whole the defence gets more impacts than the offence. Line backers from the defence and running backs from the offence got most hard impacts. A lot of mild impacts were experienced by wide receivers, running backs, line backers and linemen from both offence and defence. Least number of impacts were experienced among quarterbacks and defensive backs.\n\nThis study demonstrates that the defensive players experience more head impacts than the offensive players. This has also been demonstrated also in the earlier studies of the subject. The impacts experienced by the running backs are typical for the playing position; both in terms of the impact situation and the intensity. Further study about the impact load is needed in order to guide the athletes and teams towards safer practices the demands of their playing position and in order to minimize the short- and long-term effects from head impacts.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2023-06-14T07:07:44Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2023-06-14T07:07:44Z (GMT). No. of bitstreams: 0\n Previous issue date: 2023", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "36", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": null, "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "iskukuormitus", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "kiihtyvyysanturi", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Iskukuormitus amerikkalaisessa jalkapallossa", "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-202306143803", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "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": "Liikuntal\u00e4\u00e4ketiede", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Sport Medicine", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.collaborator", "value": "business", "language": "", "element": "contractresearch", "qualifier": "collaborator", "schema": "yvv"}, {"key": "yvv.contractresearch.collaborator", "value": "finance", "language": "", "element": "contractresearch", "qualifier": "collaborator", "schema": "yvv"}, {"key": "yvv.contractresearch.collaborator", "value": "community", "language": "", "element": "contractresearch", "qualifier": "collaborator", "schema": "yvv"}, {"key": "yvv.contractresearch.funding", "value": "10000", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "yvv.contractresearch.initiative", "value": "business", "language": "", "element": "contractresearch", "qualifier": "initiative", "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.copyright", "value": "\u00a9 The Author(s)", "language": null, "element": "rights", "qualifier": "copyright", "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": "5042", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "amerikkalainen jalkapallo", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "harjoittelu", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "pelaajat", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
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