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[{"key": "dc.contributor.advisor", "value": "Virmavirta, Mikko", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Vekki, Sakari", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2024-11-01T14:08:33Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2024-11-01T14:08:33Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2024", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/98040", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Quantifying whole body angular momentum (WBAM) is important in many aspects of biomechanics, from analysing the dynamics of complex acrobatic maneuvers to understanding balance in everyday activities such as walking. Two calculation methods \u2013 the kinematic method and the impulse method \u2013 can be used to determine WBAM. Both methods have inherent sources of error, and they also depend on estimates of inertial properties of body segments. Despite their widespread use, these methods have not been thoroughly compared. The aim of this study was to investigate the potential differences in WBAM values derived from these two computational approaches. \n\nIn this study, two male gymnasts performed different jumping tasks where WBAM was calculated in the sagittal plane. Data were collected using a Vicon motion capture system at 200 Hz with 16 cameras together with an AMTI force plate. Three regression equation-based body segment inertial parameter (BSIP) models were used together with the kinematic and the impulse methods to evaluate the differences between these methods in calculating WBAM.\n\nThe findings revealed statistically significant differences in WBAM values between the kinematic and impulse methods. Variations between the BSIP models also significantly influenced the WBAM values. However, the choice of calculation method had a larger impact on the WBAM values than the choice of BSIP model. The kinematic method yielded more consistent results between different BSIP models than the impulse method. This suggests that the kinematic method may be more suitable for WBAM assessment in biomechanical research than the impulse method.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Koko kehon py\u00f6rimism\u00e4\u00e4r\u00e4n m\u00e4\u00e4ritt\u00e4minen on olennainen osa biomekaniikkaa. Sit\u00e4 voidaan hy\u00f6dynt\u00e4\u00e4 laajasti, alkaen monimutkaisten akrobaattisten liikkeiden analysoinnista aina k\u00e4velyn aikana tapahtuvan tasapainon s\u00e4\u00e4telyn ymm\u00e4rt\u00e4miseen. Koko kehon py\u00f6rimism\u00e4\u00e4r\u00e4n laskentaan on olemassa kaksi erilaista l\u00e4hestymistapaa: kinematiikkaan perustuva menetelm\u00e4 sek\u00e4 impulssiin perustuva menetelm\u00e4. Kummallakin n\u00e4ist\u00e4 menetelmist\u00e4 on omat virhel\u00e4hteens\u00e4, ja ne ovat my\u00f6s riippuvaisia kehon hitausominaisuuksien arvioista. Menetelmien laajasta k\u00e4yt\u00f6st\u00e4 huolimatta niiden v\u00e4lisi\u00e4 eroja ei ole viel\u00e4 tutkittu. T\u00e4m\u00e4n tutkimuksen tarkoituksena oli selvitt\u00e4\u00e4 mahdollisia eroja kinematiikka- ja impulssimenetelmien kautta lasketuissa koko kehon py\u00f6rimisliikem\u00e4\u00e4riss\u00e4.\n\nTutkimuksessa kaksi miespuolista telinevoimistelijaa suorittivat erilaisia ponnistavia liikkeit\u00e4, joiden ajalta koko kehon py\u00f6rimism\u00e4\u00e4r\u00e4\u00e4 laskettiin sagittaalitasossa. Suoritusten analysointia varten dataa ker\u00e4ttiin Vicon liikekaappausj\u00e4rjestelm\u00e4\u00e4 hy\u00f6dynt\u00e4en 16:lla kameralla 200 Hz:n taajuudella yhdess\u00e4 AMTI voimalevyn kanssa. Kolmea regressioyht\u00e4l\u00f6ihin perustuvaa kehon hitausominaisuuksia arvioivaa segmenttimallia k\u00e4ytettiin yhdess\u00e4 kinematiikka- ja impulssimenetelmien kanssa arvioimaan menetelmien v\u00e4lisi\u00e4 eroja koko kehon py\u00f6rimism\u00e4\u00e4r\u00e4n laskennassa.\n\nTutkimuksen tulokset osoittivat, ett\u00e4 kinematiikka- ja impulssimenetelmill\u00e4 lasketuissa koko kehon py\u00f6rimism\u00e4\u00e4riss\u00e4 on tilastollisesti merkitt\u00e4vi\u00e4 eroja. Lis\u00e4ksi segmenttimallien v\u00e4liset erot vaikuttivat tilastollisesti laskettuihin arvoihin. Kuitenkin laskentamenetelm\u00e4n valinnalla havaittiin olevan suurempi vaikutus koko kehon py\u00f6rimism\u00e4\u00e4r\u00e4n laskennallisiin arvoihin kuin segmenttimallin valinnalla. Kinematiikkamenetelm\u00e4n tuottamat py\u00f6rimism\u00e4\u00e4r\u00e4n arvot olivat johdonmukaisempia eri segmenttimallien v\u00e4lill\u00e4 verrattuna impulssimenetelm\u00e4n tuottamiin arvoihin. N\u00e4m\u00e4 tulokset viittaavat siihen, ett\u00e4 kinematiikkamenetelm\u00e4 saattaa olla impulssimenetelm\u00e4\u00e4 soveltuvampi tapa arvioimaan koko kehon py\u00f6rimism\u00e4\u00e4r\u00e4\u00e4 biomekaniikan tutkimuksissa.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija.group@korppi.jyu.fi) on 2024-11-01T14:08:33Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2024-11-01T14:08:33Z (GMT). No. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "96", "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": "CC BY 4.0", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.title", "value": "Comparative analysis of methods for calculating whole body angular momentum: with special reference to body segment inertial parameters", "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-202411016888", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sport and Health Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Liikuntatieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Master's Degree Programme in Wellness Technology", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Hyvinvointiteknologian maisteriohjelma", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"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.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://creativecommons.org/licenses/by/4.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
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