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[{"key": "dc.contributor.advisor", "value": "Linnamo, Vesa", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "V\u00e4nttinen, Tomi", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "L\u00f6pp\u00f6nen, Antti", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2020-10-09T05:37:42Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2020-10-09T05:37:42Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2020", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/72074", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Uudet pienikokoiset inertiamittausyksik\u00f6t tarjoavat uusia mahdollisuuksia biomekaniikan tutkimuksiin ja tekniikkavalmennukseen vesiurheilulajeissa. T\u00e4ss\u00e4 tutkimuksessa selvitettiin, kuinka uinnissa k\u00e4ytetty inertiamittausyksikk\u00f6 kykenee mittaamaan ja analysoimaan melanvedon keskeisi\u00e4 muuttujia ja millainen yhteys niill\u00e4 on aluksen nopeuteen. Lis\u00e4ksi tarkoitus oli selvitt\u00e4\u00e4, voidaanko analysoitua tietoa hy\u00f6dynt\u00e4\u00e4 melonnan tekniikkavalmennuksessa. \nMittaukset suoritettiin uima-altaassa. Mittausprotokolla sis\u00e4lsi normaalia symmetrist\u00e4 melontaa kolmella eri tehoalueella (frekvenssill\u00e4) ja kaksi melontasuoritusta, joissa oli erilainen melontatekninen painotus. Tutkimuksessa k\u00e4ytettiin Trainesense SmartPaddle-inertiamittausyksikk\u00f6\u00e4. Laitteen sensorien tallentaman datan perusteella voitiin laskea vedossa k\u00e4ytetty voima, \nliikerata, nopeus ja suunta. N\u00e4it\u00e4 muuttujia verrattiin laservalokennoilla mitattuun aluksen keskinopeuteen. Lis\u00e4ksi inertiamittausyksikk\u00f6\u00e4 verrattiin venym\u00e4liuska-anturitekniikkaan perustuvaan anturivarteen. \n\nTutkimukseen osallistui yhteens\u00e4 15 tutkittavaa, joiden keski-ik\u00e4 oli 40,8 (\u00b117,2) vuotta, keskipituus 182,3 (\u00b17,6) cm ja keskiarvopaino 81,2 (\u00b111,6) kg. Frekvenssi ja voima olivat keskeisi\u00e4 aluksen kulkunopeuteen vaikuttavia muuttujia. Kun ne kasvoivat, nousi aluksen kulkunopeus. Voimantuottoaika oli yhteydess\u00e4 nopeuteen vastakkaisella tavalla. Kulkunopeuteen vahvimmin korreloivat frekvenssi (r=0,857, p<0,001) ja voima (r=0,786, p<0,001) sek\u00e4 voimantuottoaika, joka korreloi negatiivisesti (r=0,755, p<0,001). Inertiamittausyksik\u00f6ll\u00e4 voitiin tunnistaa ja erottaa keskeiset tekniikan ajoituksen muuttujat, kuten voimantuottoaika (p=0,001), vedon pituus (p=0,005) ja voimantuoton alun viive (p=0,037), etu- ja takapainotteisessa melontasuorituksessa toisistaan. Inertiamittausyksik\u00f6n todettiin antavan luotettavaa tietoa keskeisist\u00e4 melan vedon muuttujista (maksimivoima, keskim\u00e4\u00e4r\u00e4inen voima, voimantuottoaika ja frekvenssi), kun sit\u00e4 verrattiin anturivarteen (r > 0,800, p<0,001 ja ICC > 0,60, p<0,001). \n\nInertiamittausyksikk\u00f6\u00e4 (Trainesense SmartPaddle) voidaan k\u00e4ytt\u00e4\u00e4 hyv\u00e4ksi melontavalmennuksessa. Se on helppok\u00e4ytt\u00f6inen ja antaa uutta tietoa erityisesti melonnan tekniikkavalmennuksen tueksi. Inertiamittausyksikk\u00f6 antaa luotettavaa tietoa melonnan keskeisist\u00e4 muuttujista, kun sit\u00e4 verrataan anturivarteen. Laitteistoa tulee kuitenkin kehitt\u00e4\u00e4 entist\u00e4 paremmin melontaan sopivaksi. Lis\u00e4ksi tutkimuksia suuremmilla tutkimusjoukoilla melonnan eri alalajien v\u00e4lill\u00e4 tarvitaan lis\u00e4\u00e4.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "New compact inertial measurement units offer new opportunities for coaching and biomechanical studies in water sports. The purpose of this study was to determine how an inertial measurement unit can analyze kayak stroke key variables and what kind of connection they have with the speed of the kayak. In addition, the purpose was to determine whether the analyzed data can be utilized in practice in kayak technique coaching. \n Measurements were taken in the swimming pool using canoe polo equipment. The measurement protocol consisted of normal symmetrical paddling at three different speeds (frequency) and two performances with different paddling techniques. The study used the Trainesense SmartPaddle-inertial measurement unit, which calculates stroke force, trajectory, velocity, and \ndirection. These variables were compared to the average speed of the kayak. The speed of the kayak was measured by laser photocells. In addition, data from the inertial measurement unit was compared with a strain gauge paddle shaft. \n \nThe average age of the subjects (n=15) was 40.8 (\u00b1 17.2) years. Their average height was 182.3 (\u00b1 7.6) cm and average weight was 81.2 (\u00b1 11.6) kg. Frequency, force and force-time were stroke key variables, which affect the speed of the kayak. Frequency (r=0.857, p<0.001) and \nforce (r=0.786, p<0.001) were most strongly correlated to kayak speed. Force-time was negatively correlated (r=-0.755, p<0.001). The inertial measurement unit could identify and distinguish key paddling technique timing variables such as force-time (p=0,001), stroke length \n(p=0,005) and force entry delay (p=0,037) for different paddling techniques. The inertial measurement unit could provide reliable information on key paddle stroke variables (maximum force, mean force, force-time and frequency) when compared to a strain gauge paddle shaft (r > 0,800, p<0,001 and ICC > 0,60, p<0,001). \n \nInertial measurement unit (Trainesense SmartPaddle) can be used in kayak coaching. It is easy to use and it provides new information about kayak technique coaching. The inertial measurement unit provides reliable information on stroke key variables when compared to the strain gauge paddle shaft. However, the device should be developed to be more suitable for kayaking. In addition, studies with larger numbers of subjects between different kayaking subspecies are needed.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2020-10-09T05:37:42Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2020-10-09T05:37:42Z (GMT). No. of bitstreams: 0\n Previous issue date: 2020", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "63", "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.subject.other", "value": "melontatekniikka", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "sensori", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "ratamelonta", "language": "", "element": "subject", 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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": "Biomekaniikka", 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