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[{"key": "dc.contributor.advisor", "value": "Marko Haverinen, Taija Juutinen", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Reinikainen, Miika", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2021-12-15T06:58:58Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2021-12-15T06:58:58Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2021", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/78973", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Aikaisemmat tutkimukset korkean intensiteetin joukkueurheilulajeista osoittavat, ett\u00e4 pitk\u00e4 kilpailukausi vaikuttaa monin tavoin negatiivisesti pelaajien fyysisiin ominaisuuksiin ja sit\u00e4 kautta my\u00f6s suorituskykyyn kauden loppua kohden ment\u00e4ess\u00e4. T\u00e4m\u00e4n tutkimuksen tarkoituksena oli havainnoida j\u00e4\u00e4kiekossa pelipaikkakohtaista luistelukuormituksen muuttumista kilpailukauden nelj\u00e4ss\u00e4 eri vaiheessa, ja n\u00e4in selvitt\u00e4\u00e4 miten kilpailukausi vaikuttaa lajispesifiin suorituskykyyn. T\u00e4ss\u00e4 tutkimuksessa pelaajat ryhmiteltiin pelipaikkakohtaisesti keskushy\u00f6kk\u00e4\u00e4jiin, laitahy\u00f6kk\u00e4\u00e4jiin ja puolustajiin, kun aikaisemmissa tutkimuksissa pelaajia on tarkasteltu joko yhten\u00e4 joukkona tai pelaajat on jaettu hy\u00f6kk\u00e4\u00e4jiin sek\u00e4 puolustajiin. Vastaavaa koko kauden kattavaa luistelumuuttuja-analyysia ei ole aikaisemmin j\u00e4\u00e4kiekon osalta tehty. Tutkimuksen aineisto k\u00e4sitti 146 j\u00e4\u00e4kiekkopelaajan vaihtokohtaiset luistelutiedot kaudella 2019-2020 pelatusta 372 runkosarjaottelusta Suomen p\u00e4\u00e4sarjatasolla. Tutkimuksen aineisto ker\u00e4ttiin Bitwise Oy:n toimesta Wisehockey-urheiluanalytiikkaj\u00e4rjestelm\u00e4n avulla. Tutkimuksessa k\u00e4ytettiin yhteens\u00e4 14 Bitwisen tarjoamaa luistelumuuttujaa: yli 0.5 sekuntia kest\u00e4vien eri kiihtyvyysalueiden ylitt\u00e4vien kiihdytysten ja jarrutusten m\u00e4\u00e4r\u00e4t per vaihto, eri kiihtyvyysalueilla ilman aikarajaa suoritettujen kiihdytysten ja jarrutusten m\u00e4\u00e4r\u00e4t per vaihto, vaihto- ja pelikohtaiset peliajat, absoluuttiset ja suhteelliset peliajat eri luistelunopeusalueilla per vaihto, vaihto- ja pelikohtaiset luistelumatkat, luistelumatkat eri luistelunopeusalueilla, maksimaaliset ja keskim\u00e4\u00e4r\u00e4iset luistelunopeudet per vaihto, sek\u00e4 yli 1 sekuntia kest\u00e4vien yht\u00e4jaksoisten k\u00e4yntien lukum\u00e4\u00e4r\u00e4t eri luistelunopeusalueilla per vaihto. Tilastollinen analyysi toteutettiin hy\u00f6dynt\u00e4m\u00e4ll\u00e4 toistomittausanalyysia. Pelipaikkakohtaisen jaon lis\u00e4ksi pelikausi jaettiin nelj\u00e4\u00e4n kvartaaliin (Q1-Q4) analyysia varten. Yli 0.5 sekuntia kest\u00e4neiden kiihdytysten sek\u00e4 jarrutusten m\u00e4\u00e4r\u00e4t laskivat kauden loppua kohden pelipaikasta riippumatta. Vastaavasti ilman aikarajaa suoritettujen kiihdytysten ja jarrutusten m\u00e4\u00e4r\u00e4t eri kiihdytysalueilla kasvoivat Q1 ja Q2 v\u00e4lill\u00e4. Yli 1 sekuntia kest\u00e4neiden suoritusten m\u00e4\u00e4r\u00e4 per vaihto \u2265 15 km/h nopeusalueella kasvoi v\u00e4lill\u00e4 Q1 ja Q2, ja vastaavasti k\u00e4yntien m\u00e4\u00e4r\u00e4 \u2265 20 km/h nopeusalueella pieneni Q3 ja Q4 v\u00e4lill\u00e4 ilman, ett\u00e4 n\u00e4ill\u00e4 kuitenkaan oli merkitsev\u00e4\u00e4 vaikutusta luisteltuun matkaan ja suhteelliseen luisteluaikaan eri nopeusalueilla. Hy\u00f6kk\u00e4\u00e4j\u00e4t suorittivat enemm\u00e4n korkeaintensiteettisi\u00e4 ja maksimaalisia jarrutuksia, luistelivat enemm\u00e4n korkeammilla nopeusalueilla, ja heill\u00e4 oli suurempi keskim\u00e4\u00e4r\u00e4inen sek\u00e4 maksimaalimen luistelunopeus verrattuna puolustajiin. Keskushy\u00f6kk\u00e4\u00e4j\u00e4t luistelivat enemm\u00e4n suuremmilla luistelunopeuksilla ja viett\u00e4v\u00e4t enemm\u00e4n aikaa korkeaintensiteettisill\u00e4 nopeusalueilla verrattuna laitahy\u00f6kk\u00e4\u00e4jiin. Puolustajat viettiv\u00e4t enemm\u00e4n aikaa matalaintensiteettisell\u00e4 luistelunopeusalueilla verrattuna hy\u00f6kk\u00e4\u00e4jiin. Pelipaikkojen ja kauden eri vaiheiden v\u00e4lill\u00e4 ei tutkimuksessa havaittu keskin\u00e4ist\u00e4 vaikutusta. Tutkimuksen tuloksista voidaan p\u00e4\u00e4tell\u00e4, ett\u00e4 j\u00e4\u00e4kiekkokausi varsinkin korkeimmalla sarjatasolla kuormittaa pelaajia siten, ett\u00e4 se n\u00e4kyy erityisesti pitk\u00e4kestoisten kiihdytysten ja jarrutusten m\u00e4\u00e4r\u00e4ss\u00e4, mutta ei luisteluintensiteeteiss\u00e4, peliajassa tai luistelumatkassa. Luistelukuormituksen muutokset kauden eri vaiheissa ei tulosten perusteella vaikuta olevan pelipaikkariippuvaisia. Tulokset antavat olettaa, ett\u00e4 keskushy\u00f6kk\u00e4\u00e4ji\u00e4 ja laitahy\u00f6kk\u00e4\u00e4ji\u00e4 tulisi tarkastella erikseen pelaajatyyppein\u00e4 havaittujen luisteluintensiteettierojen vuoksi.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Balance between recovery and the load in high-intensity sport such as ice hockey is the key to best possible performance. Previous studies in ice hockey as well as studies from other high-intensity team sports suggest that players\u00b4 performance decreases toward the end of the season. The aim of this study was to examine if the sport specific external load would change towards the end of competitive season in ice hockey. In addition, the purpose of this study was to compare skating loads during the in-season between three different playing positions: centers, wingers, and defensemen. Previous studies have not examined the effect of playing position so extensively. The study subjects were total of 146 male Finnish elite league ice hockey players from total of 9 teams. This study contained players skating data from total of 372 matches which were played during the regular season of 2019-2020. The study was done with repeated measures for three player subgroups based on playing position (centers, wingers, defensemen). Season was divided into four different quarters (Q1-Q4). Skating load measurements were performed via Local Positioning System based Wisehockey analytics platform provided by Bitwise corporation. The skating variables used were the following: accelerations and decelerations over 0.5 second threshold limits per shift, accelerations and decelerations in different threshold ranges per shift, time on ice per shift and per match, relative and absolute time spent in different velocity ranges per shift, skating distance per shift and per match, skating distance in different velocity ranges per shift, maximum and mean velocities per shift, and number of over 1 second visits over different velocity limits per shift. Numbers of both, prolonged (> 0.5 sec) high-intensity and maximal accelerations and decelerations decreased towards the end of the season. Correspondingly, accelerations and decelerations in different threshold ranges increased from Q1 to Q2 without subsequent decline when measured without time limit. The number of over 1 second visits per shift at the limit of \u2265 15 km/h increased from Q1 to Q2 and over 1 second visits at the limit of \u2265 20 km/h decreased from Q3 to Q4, without any reflection in skating distance or the time spent in related skating velocity ranges over the same periods of time. No interaction was found between playing positions and season phases regarding to any of the measured skating metrics. Centers and wingers performed more high-intensity and maximal decelerations, skated higher intensities overall, and had higher maximal and mean skating speed per shift compared to defensemen. Centers skate slightly higher skating speeds and spend more time in very high skating intensities during the shift compared to wingers. Defensemen skated more distance per match and spent more time on ice during the match and spent more time in lower skating intensities than forwards. As a conclusion, full competitive season of ice hockey seems to impair the players\u00b4 ability to perform prolonged accelerations and decelerations. However, the decrease of performance towards the end of the season is not visible in any other skating variables. Different season phases did not affect skating load playing position specifically. This study clearly indicates that forwards cannot be grouped as a one playing position, since centers skate with higher intensities, both in time and in distance, than wingers.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2021-12-15T06:58:57Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2021-12-15T06:58:58Z (GMT). No. of bitstreams: 0\n Previous issue date: 2021", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "105", "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": "eng", "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": "training load", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "internal load", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "external load", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "local positioning system", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "playing position", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "In-season variation of skating load at different playing positions in male elite ice hockey : a single season longitudinal study", "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-202112155960", "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": "Liikuntafysiologia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Exercise Physiology", "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": "5011", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "joukkueurheilu", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "j\u00e4\u00e4kiekko", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "luistelu", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "j\u00e4\u00e4kiekkoilijat", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "team sports", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ice hockey", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "skating", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ice hockey players", "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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