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[{"key": "dc.contributor.advisor", "value": "Juutinen, Taija", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Ihalainen, Petra", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2015-08-24T12:17:36Z", "language": "", "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2015-08-24T12:17:36Z", "language": "", "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2014", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1493352", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/46696", "language": "", "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Petra Ihalainen. Kev\u00e4t 2014. Lihasaktiivisuuden puute alaraajojen lihaksissa toimistoty\u00f6l\u00e4isill\u00e4 \u2013 dynaamisen ty\u00f6tuolin vaikutus. Liikuntabiologian laitos, Jyv\u00e4skyl\u00e4n Yliopisto. Valmennus- ja testausopin Pro Gradu -tutkielma.57 s, 5 liitett\u00e4.\r\nMaailman terveysj\u00e4rjest\u00f6 WHO on nostanut fyysisen inaktiivisuuden lis\u00e4\u00e4ntymisen merkitt\u00e4v\u00e4ksi terveysriskiksi maailmanlaajuisesti. Fyysisen inaktiivisuuden haittavaikutukset terveyteen ovat riippumattomia fyysisen aktiivisuuden terveytt\u00e4 edist\u00e4vist\u00e4 vaikutuksista. Inaktiivisuusaika kertyy hereill\u00e4 oloaikana muun muassa toistuvista istumisjaksoista. Toimistoty\u00f6t\u00e4 tekevill\u00e4 p\u00e4ivitt\u00e4inen istuen kulutettu aika voi olla huomattavan suuri. Lihasaktiivisuuden tuottamat paikalliset vasteet ovat avainasemassa fyysisen aktiivisuuden terveyshy\u00f6tyj\u00e4 tarkasteltaessa. Inaktiivisuusjakson keskeytt\u00e4vien aktiivisuusjaksojen lukum\u00e4\u00e4r\u00e4ll\u00e4 on havaittu olevan terveysvaikutusten kannalta suurempi merkitys, kuin aktiivisuuden intensiteetill\u00e4. \r\nT\u00e4ss\u00e4 tutkimuksessa tutkittiin istumisen aikaista lihasaktiivisuutta jalkojen lihaksissa suomalaisilla toimistoty\u00f6l\u00e4isill\u00e4 (n=4) ty\u00f6p\u00e4iv\u00e4n aikana. Vertasimme kahta dynaamista ty\u00f6tuolia (HG ja HM tuolit) perinteiseen staattiseen toimistotuoliin (SC tuoli) koehenkil\u00f6iden istuessa kolmen viikon aikana 5 per\u00e4kk\u00e4ist\u00e4 ty\u00f6p\u00e4iv\u00e4\u00e4 kullakin tuolilla satunnaisessa j\u00e4rjestyksess\u00e4. Lihasaktiivisuutta rekister\u00f6itiin vaatteeseen integroiduilla tekstiilielektrodeilla nelip\u00e4isen reisilihaksen, hamstring-, kaksoiskanta- sek\u00e4 etummaisen s\u00e4\u00e4rilihaksen p\u00e4\u00e4lt\u00e4. Elektromyografia (EMG) data keskiarvoistettiin etu- ja takareiden lihaksista (QH) sek\u00e4 s\u00e4\u00e4rten (LL) lihaksista. Tuoleihin kiinnitettiin kiihtyvyysmittarit (ACC) rekister\u00f6im\u00e4\u00e4n istuimen liikkeit\u00e4 istumisen aikana. Koehenkil\u00f6t istuivat keskim\u00e4\u00e4rin 5.16 \u00b1 1.04 h ty\u00f6p\u00e4iv\u00e4n aikana omalla ty\u00f6pisteell\u00e4\u00e4n. LL-lihakset olivat inaktiiviset 82 \u00b1 1.63 % ja QH-lihakset 92 \u00b1 0.66 % ajasta istumisen aikana. Dynaamisilla tuoleilla istuttaessa LL-lihaksissa rekister\u00f6itiin liev\u00e4sti korkeampi aktiivisuustaso staattiseen tuoliin verrattuna (+10 % ero), kun tarkasteltiin aktiivisuuden keskiarvoa tai aktiivisuusburstien lukum\u00e4\u00e4r\u00e4\u00e4. QH-lihaksissa tuloksissa ei havaittu systemaattisia eroavaisuuksia. Inaktiivisuusjaksot LL-lihaksissa olivat lyhyempi\u00e4 dynaamisella tuolilla istuttaessa, mutta inaktiivisuusajassa ei havaittu suurta eroa tuolien v\u00e4lill\u00e4. Tulokset tukevat oletusta, ett\u00e4 dynaamiset ty\u00f6tuolit saattavat lis\u00e4t\u00e4 aktiivisuutta alaraajojen lihaksissa staattiseen tuoliin verrattuna. Lis\u00e4tutkimuksia tarvitaan, jossa kyet\u00e4\u00e4n osoittamaan, onko istumisen aikana rekister\u00f6ity lihasaktiivisuus intensiteetilt\u00e4\u00e4n riitt\u00e4v\u00e4\u00e4 terveyshy\u00f6tyjen saavuttamiseksi.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Petra Ihalainen, Fall 2014. Lack of muscle activity in leg muscles of office workers \u2013 effect of a dynamic office chair. Department of Biology of Physical Activity, University of Jyv\u00e4skyl\u00e4. M.Sc Thesis in the science of sport coaching and fitness testing. 57 pp, 5 appendicies.\r\nThe World Health Organization has named physical inactivity as a world-wide health risk. Physical inactivity has shown to induce harmful health responses, independently from physical activity. A great deal of daily physical inactivity is accumulated from prolonged sitting periods. Furthermore, daily sitting may accumulate at work. Office work, in particular, has been identified highly passive due to the high rates of sitting during working hours. Recent findings indicate that local muscular activation is the key factor signaling the metabolic responses to activity behavior. When interrupting prolonged inactivity period, the number of activity breaks has shown to be more significant for health parameters, than the intensity of the activity.\r\nIn the present study, we investigated local muscle activity in lower extremities during occupational sitting in Finnish office workers (n=4). We expected, that replacing a static office chair with a dynamic chair might induce enhanced muscle activity, and, thus, decrease the inactivity time in lower extremities during sitting. We compared two dynamic chairs (HG and HM) to a conventional static chair (SC) that were used by the office workers, each chair being used for one week in randomized order. Electromyographic (EMG) activity was recorded from quadriceps, hamstring, gastrocnemius and tibialis anterior muscles with textile electrodes embedded into clothing and averaged for quadriceps and hamstring muscles (QH) and lower leg muscles (LL). The average sitting time in the office was 5.16 h \u00b1 1.04 h during the 12 days of measurements. The LL muscles were inactive for 82 \u00b1 1.63 % and QH muscles for 90 \u00b1 0.66 % of sitting time, LL muscles being proportionally more active during sitting than QH muscles. No marked difference between dynamic chairs and SC chair was observed in inactivity time. However, a positive trend was seen in LL muscle activity when dynamic chairs were compared to SC chair: greater than 10 % difference in average EMG, mean amplitude and burst rate was detected with dynamic chairs, when compared to SC chair. The results from the present study give slight support for the hypothesis that dynamic chairs would enhance muscle activity during sitting. Dynamic chairs might predispose leg muscles to more \u201cactive\u201d sitting, yet further research is needed to determine if the intensity of the muscle activity induced by dynamic chairs is enough for significant health benefits.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Petra Ihalainen (pejukrih) on 2015-08-24 12:17:36.176420. 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 2015-08-24T12:17:36Z\r\nNo. of bitstreams: 2\r\nURN:NBN:fi:jyu-201508242745.pdf: 2421505 bytes, checksum: f281b2b5d3d507460d5aca02b714546a (MD5)\r\nlicense.html: 4853 bytes, checksum: 736ea5c7721c9161a0f8d120006f0899 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2015-08-24T12:17:36Z (GMT). No. of bitstreams: 2\r\nURN:NBN:fi:jyu-201508242745.pdf: 2421505 bytes, checksum: f281b2b5d3d507460d5aca02b714546a (MD5)\r\nlicense.html: 4853 bytes, checksum: 736ea5c7721c9161a0f8d120006f0899 (MD5)\r\n Previous issue date: 2014", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (87 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": "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": "lihasaktiivisuus", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Lack of muscle activity in leg muscles of office workers : effect of a dynamic office chair", "language": null, "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-201508242745", "language": null, "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", 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Testing", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.date.updated", "value": "2015-08-24T12:17:37Z", "language": "", "element": "date", "qualifier": "updated", "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": "fi", "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": "5013", "language": null, "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ty\u00f6tuolit", 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