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[{"key": "dc.contributor.advisor", "value": "Juutinen, Taija", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Haapala, Eero", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Vanhala, Anssi", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2019-05-23T06:41:40Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2019-05-23T06:41:40Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2019", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/64136", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Fyysisen aktiivisuuden on havaittu olevan positiivisesti yhteydess\u00e4 fyysiseen ja henkiseen terveyteen sek\u00e4 kehitykseen lapsilla. Kuormittavuus on yksi t\u00e4rkeimmist\u00e4 fyysisen aktiivisuuden osatekij\u00f6ist\u00e4 ja sen on oltava riitt\u00e4v\u00e4n suuri, jotta halutut positiiviset vaikutukset saavutetaan. Kuormittavuutta kuvataan kuitenkin yleens\u00e4 vain absoluuttisilla arvoilla, jotka eiv\u00e4t ota huomioon kest\u00e4vyyskunnon mukaan vaihtelevaa fyysisen aktiivisuuden yksil\u00f6llist\u00e4 kuormittavuutta. Kiihtyvyysmittarit ovat yksi yleisimmist\u00e4 tavoista mitata fyysist\u00e4 aktiivisuutta, vaikkakin niiden kyky arvioida kuormitusta yksil\u00f6llisesti onkin kyseenalaistettu. \nT\u00e4m\u00e4n tutkimuksen tarkoituksena oli ensinn\u00e4 selvitt\u00e4\u00e4, kuinka hyvin kiihtyvyysarvot korreloivat ep\u00e4suoralla kalorimetrialla mitatun energiankulutuksen kanssa alakouluik\u00e4isill\u00e4 lapsilla, kun he suorittavat kuormitukseltaan eritasoisia aktiviteetteja. Toiseksi selvitettiin, kuinka hyvin kiihtyvyysarvot kykenev\u00e4t erottelemaan fyysisen aktiivisuuden aiheuttamaa yksil\u00f6llist\u00e4 kuormitusta kest\u00e4vyyskunnoltaan eritasoisilla lapsilla. Lis\u00e4ksi tarkasteltiin, onko suhteellisessa kuormittavuudessa eroja lasten v\u00e4lill\u00e4, jos kuormitus suhteutetaan hapenottokyvyn reserviin tai ensimm\u00e4iseen ventilaatiokynnykseen.\nTutkimukseen osallistuneet lapset (N=34) olivat alakoulun ensimm\u00e4iselt\u00e4, kolmannelta ja viidennelt\u00e4 luokalta. Lapset suorittivat kahdeksan aktiviteettia, jotka olivat istuminen, k\u00e4vely (4 ja 6 km/h) ja juoksu (8 km/h) juoksumatolla, porrask\u00e4vely, ruutuhyppely sek\u00e4 omavauhtinen juoksu ja k\u00e4vely. Teht\u00e4vien aikana kiihtyvyytt\u00e4 mitattiin lantiolle puettavalla kolmiakselisella kiihtyvyysmittarilla ja energiankulutusta ep\u00e4suoraan kalorimetriaan perustuvalla liikuteltavalla hengityskaasuanalysaattorilla. Lapsilta mitattiin my\u00f6s lepoenergiankulutus. Lis\u00e4ksi polkupy\u00f6r\u00e4ergometrilla toteutetun maksimaalisen kuormituskokeen perusteella m\u00e4\u00e4ritettiin hapenkulutuksen huippuarvo sek\u00e4 ventilaatiokynnykset. \nKiihtyvyysarvojen ja energiankulutuksen v\u00e4lill\u00e4 oli voimakas korrelaatio (0,809, p<0,001) mitatuissa teht\u00e4viss\u00e4. Tulokset osoittivat kuitenkin, ett\u00e4 kiihtyvyysarvot eiv\u00e4t kykene erottelemaan yksil\u00f6iden kest\u00e4vyyskuntoon suhteutettua kuormittumista. Lis\u00e4ksi havaittiin, ett\u00e4 vaikka lapset ty\u00f6skentelev\u00e4t samassa suhteessa hapenottokyvyn reserviin, voi kuormitus suhteessa ensimm\u00e4iseen ventilaatiokynnykseen vaihdella yksil\u00f6iden v\u00e4lill\u00e4. T\u00e4m\u00e4n seurauksena fyysisen aktiivisuuden fysiologiset vasteet voivat olla erilaiset, jos kuormitusta kuvataan ainoastaan hapenottokyvyn reserviin suhteutettuna. Jatkossa tulisi tarkemmin tutkia mahdollisuuksia ottaa kest\u00e4vyyskunto huomioon fyysist\u00e4 aktiivisuutta tarkastelevissa tutkimuksissa. Tarkemman yksil\u00f6llisen kuormituksen havaitsemiseksi kuormitus tulisi suhteuttaa ennemmin ensimm\u00e4iseen ventilaatiokynnykseen kuin hapenottokyvyn reserviin.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "There is evidence that physical activity is positively associated with health and development in children. Intensity is one of the most important components of physical activity and it has to be high enough to achieve all the positive effects of physical activity. Intensity of the physical activity is traditionally expressed as absolute values which are not taking into account the aerobic fitness level of children. Accelerometers are the most popular devices to measure physical activity because they are inexpensive and relative feasible to use, although their ability to detect individual intensity of physical activity has been questioned. \nThe purpose of this study was firstly to examine what is the correlation between acceleration values and energy expenditure in tasks with different intensity levels in children. Secondly, the aim was to compare absolute and relative values of the physical activity intensity between children with different level of aerobic fitness. Thirdly, the study examined if there is difference in relative intensity when it is determined relative to first ventilatory threshold or relative to oxygen uptake reserve. \nThe subjects (N=34) were children from first, third and fifth grade of primary school. Children performed eight different activities which were sitting, walking (4 and 6 km/h) and running (8 km/h) on the treadmill, stairs climbing, playing hopscotch and walking and running with self-selected speed. During activities accelerations were measured from the hip with the accelerometer and energy expenditure was recorded breath by breath with a portable gas analyzer based on indirect calorimetry. Resting energy expenditure was also measured. Peak oxygen uptake and ventilatory thresholds were determined based on respiratory gases measured during maximal test performed till exhaustion with a cycling ergometer. \nThere was a strong correlation (0.809, p<0.001) between accelerations and energy expenditure measured in different activities. However, acceleration values could not detect individual intensity level when intensity was determined in relation to aerobic fitness. Results also showed that although children work with the same intensity relative to oxygen uptake reserve, they can work at different intensity when intensity is determined relative to the ventilatory threshold. In this case, also physiological responses of activity are different. In the future, studies should concentrate to examine how aerobic fitness level of individual could better taken into account when measuring physical activity. To detect more specific individual effects of physical activity, the intensity level should rather be determined relative to the first ventilatory threshold than oxygen uptake reserve.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2019-05-23T06:41:40Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2019-05-23T06:41:40Z (GMT). No. of bitstreams: 0\n Previous issue date: 2019", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "141", "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.title", "value": "Fyysisen aktiivisuuden kuormittavuuden m\u00e4\u00e4ritt\u00e4minen absoluuttisesti ja kest\u00e4vyyskuntoon suhteutettuna energiankulutukseen ja lantiolta mitattuihin kiihtyvyysarvoihin perustuen alakouluik\u00e4isill\u00e4 lapsilla", "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-201905232750", "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": "lapset (ik\u00e4ryhm\u00e4t)", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "fyysinen aktiivisuus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "energiankulutus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kuormitus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kiihtyvyys", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "fyysinen kunto", "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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