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[{"key": "dc.contributor.advisor", "value": "Juutinen, Taija", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Laaksonen, Kimmo", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2015-11-30T12:42:27Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2015-11-30T12:42:27Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2015", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1505043", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/47879", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Tutkimuksessa selvitettiin Zero Point Finland Oy:n valmistamien s\u00e4\u00e4risuojaprototyyppien toimivuutta jalkapallossa. S\u00e4\u00e4risuojien toimivuus voidaan jakaa vammoilta suojaamiseen sek\u00e4 k\u00e4ytt\u00f6mukavuuteen. Tutkittavia prototyyppej\u00e4 oli kolme, jotka erosivat toisistaan suojan sis\u00e4pehmusteen materiaalin osalta. Prototyyppien suojaavuutta tutkittiin iskutestien avulla, joissa tuloksia verrattiin jo markkinoilla oleviin Niken Mercurial Blade sek\u00e4 Mercurial Flylite -suojiin. Laboratoriotutkimusta varten rakennetun heilurin avulla iskutestit suoritettiin jokaiselle tutkittavalle s\u00e4\u00e4risuojalle koehenkil\u00f6it\u00e4 ja tekojalkaa k\u00e4ytt\u00e4en. Suojien eroavaisuuksia mitattiin painepohjallisten, voimalevyn sek\u00e4 koehenkil\u00f6iden tuntemusten avulla. Prototyyppien k\u00e4ytt\u00f6mukavuutta testattiin jalkapallopelien aikana, joissa k\u00e4ytt\u00e4j\u00e4t vertailivat kyselylomakkeen avulla prototyyppej\u00e4 omien aikaisempien suojien k\u00e4ytt\u00f6kokemuksiin.\nIskutesteiss\u00e4 merkitsev\u00e4sti paras suojaavuus yli 1500 N iskuissa todettiin Nike Mercurial Blade -suojalla (p<0,01). Kyseisen s\u00e4\u00e4risuojan suojaavuus perustui kovan hiilikuidusta valmistetun ulkokuoren kykyyn levitt\u00e4\u00e4 iskuvoima laajemmalle alueelle. Koehenkil\u00f6ille suoritetuissa iskutesteiss\u00e4 Mercurial Blade -s\u00e4\u00e4risuojan k\u00e4ytt\u00f6 aiheutti kaikkia muita suojia merkitt\u00e4v\u00e4sti pienemm\u00e4n kivun tunteen (p<0,01) 40 ja 60 asteen pudotuskulmissa. Tutkimuksessa havaittiin, ett\u00e4 s\u00e4\u00e4risuojan kova ulkokuori on yleisesti merkitt\u00e4vin vaikuttaja iskun vaimennukseen. Zero Pointin prototyypeist\u00e4 parhaiten suojasi Decell B -materiaalista valmistettu suoja, joka vaimensi alhaisia noin 1500 N iskuja paremmin kuin Mercurial Blade -malli (p<0,01). Kovan ulkokuoren puuttumisen johdosta Decell B -prototyypin suojaavuus laski huomattavasti iskuvoiman kasvaessa. \nZero Pointin prototyypit saivat erinomaista palautetta jalkapallon pelaajilta k\u00e4ytett\u00e4vyystesteiss\u00e4. Pelaajat arvioivat uusien prototyyppien pysyv\u00e4n pelin aikana paikallaan paremmin (p<0,01) sek\u00e4 olevan hengitt\u00e4vimpi\u00e4 (p<0,01), mukavampia (p<0,01) ja keve\u00e4mpi\u00e4 (p<0,01) kuin heid\u00e4n omat k\u00e4yt\u00f6ss\u00e4 olevat suojat. Pelaajat eiv\u00e4t kuitenkaan luottaneet, ett\u00e4 prototyypit suojaisivat heid\u00e4n omia suojia paremmin (p=0,8). Tutkimuksen pohjalta voidaan sanoa, ett\u00e4 testattujen prototyyppisuojien merkitt\u00e4vin ero kilpailijoihin on k\u00e4ytt\u00f6mukavuudessa.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "The study examined how well shin guards, produced by Zero Point Finland Oy, function in football. Functionality of the shin guards can be divided into injury protection and comfort. This study tested three prototype versions which all had different interior padding material. Protectiveness of the prototypes was examined by impact tests and the results were compared to Nike\u2019s Mercurial Blade and Mercurial Flylite shin guards that were already on the market. Tests were carried out using a heavy pendulum which created an impact to the shin that was covered by the tested shin guards in random order. Impact forces, and pressure distribution as well as subjective evaluation were recorded. Comfort of the prototypes was assessed during football games, where the players compared the prototypes to their own typical shin guard by using a questionnaire. \nImpact tests showed that the Nike Mercurial Blade had a significantly better protectiveness than any other shin guard in impacts greater than 1500 N (p<0,01). Protectiveness of the shin guard is based on the hard outer shell that is made from carbon fibers which has ability to spread the impact force over a larger area. By using Mercurial Blade the subjects experienced on average half of the pain that they experienced using the other shin guards in 40 and 60 degree drop angles (p<0,01). This study found that the hard outer shell is the most influential part of the attenuation of the impact. The shin guard made from Decell B-material had the best protectiveness of the prototypes produced by Zero Point. Decell B dampened shocks to the lower leg superbly. Especially lower impacts below 1500 N were dampened better with Decell B -prototype than Mercurial Blade model (p<0,01). Due to the lack of a hard outer shell protectiveness of the Decell B -prototype dropped significantly when the impact force increases. \nZero Point prototypes received excellent feedback from the football player usability tests. The players evaluated that the new prototypes are better at remaining in place during the game (p<0,01). Also the prototypes were more breathable (p<0,01), more comfortable (p<0,01) and lighter (p<0,01) than their personal shin guards. However the players did not believe that the prototypes would have had better protection than the shin guards they already owned (p=0,8). Based on this study the most significant difference compared with competitors is comfort of the shin guard prototype.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Kimmo Laaksonen (kiillaak) on 2015-11-30 12:42:27.142630. Form: Pro gradu -lomake (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake). JyX data: [jyx_publishing-allowed (fi) =True]", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija.group@korppi.jyu.fi) on 2015-11-30T12:42:27Z\nNo. of bitstreams: 2\nURN:NBN:fi:jyu-201511303867.pdf: 2398989 bytes, checksum: 07ae3461ceea83d0de3ed81b7578aa8c (MD5)\nlicense.html: 4818 bytes, checksum: 6139063f65d5ddde03f8c6cbda8302f6 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2015-11-30T12:42:27Z (GMT). No. of bitstreams: 2\nURN:NBN:fi:jyu-201511303867.pdf: 2398989 bytes, checksum: 07ae3461ceea83d0de3ed81b7578aa8c (MD5)\nlicense.html: 4818 bytes, checksum: 6139063f65d5ddde03f8c6cbda8302f6 (MD5)\n Previous issue date: 2015", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (92 sivua)", "language": null, "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": "s\u00e4\u00e4risuojat", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": 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