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[{"key": "dc.contributor.advisor", "value": "Avela, Janne", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Stenroth, Lauri", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Lesch, Kim", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2023-12-13T07:11:55Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2023-12-13T07:11:55Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2023", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/92290", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4m\u00e4n tutkimuksen tarkoituksena oli tutkia v\u00e4symyksen vaikutusta alaraajojen motoriseen kontrolliin nuorilla alppihiiht\u00e4jill\u00e4 k\u00e4ytt\u00e4en aiheutetun tasapainoh\u00e4iri\u00f6n testimenetelm\u00e4\u00e4. P\u00e4\u00e4asiallisena tavoitteena oli arvioida v\u00e4symyksen vaikutuksia alaraajojen linjaukseen, erityisesti polven (polven valgus) ja lonkan kinematiikkaan (lonkan koukistus ja lonkan abduktio) tasapainoteht\u00e4viss\u00e4.\nTutkimukseen rekrytoitiin yhteens\u00e4 nelj\u00e4toista tervett\u00e4 kansallisen tason alppihiiht\u00e4j\u00e4\u00e4, joista 11 oli miehi\u00e4 ja 3 naisia, keski-i\u00e4n ollessa 17,4 \u00b1 1,8 vuotta, pituuden 176,4 \u00b1 9,5 cm ja painon 68,4 \u00b1 14,1 kg. Osallistujat valittiin paikallisesta alppihiihtolukiosta ja paikallisesta hiihtoseurasta yhteisty\u00f6ss\u00e4 Kuopion seudun urheiluakatemian kanssa. Mittaukset suoritettiin instrumentoidulla juoksumatolla ja osallistujille asetettiin heijastavat markkerit 3D-liikeanalyysin perustuvaa biomekaanista mallinnusta varten. Mittausprotokolla sis\u00e4lsi 10 satunnaista h\u00e4iri\u00f6t\u00e4 eri suuntiin (taakse, keskelle, sivulle) ja kahdella eri nopeudella (hidas tai nopea). Mittaukset tehtiin laskettelumonot jalassa ennen ja j\u00e4lkeen v\u00e4symysprotokollan.\nTilastollinen analyysi ei paljastanut merkitt\u00e4vi\u00e4 eroja polven linjauksessa, lonkan koukistuksessa tai lonkan abduktiossa ennen ja j\u00e4lkeen v\u00e4symysvaiheen. N\u00e4m\u00e4 tulokset eiv\u00e4t vastaa alkuper\u00e4ist\u00e4 hypoteesia, sill\u00e4 tulokset osoittavat, ett\u00e4 v\u00e4symyksell\u00e4 ei ollut merkitt\u00e4v\u00e4\u00e4 vaikutusta alaraajojen motoriseen kontrolliin k\u00e4ytett\u00e4ess\u00e4 h\u00e4irik\u00f6ity\u00e4 tasapainotestimenetelm\u00e4\u00e4. On kuitenkin t\u00e4rke\u00e4\u00e4 huomata, ett\u00e4 h\u00e4irik\u00f6ity tasapainotesti osoittautui hyv\u00e4ksi menetelm\u00e4ksi arvioida asennon hallintaa ja tasapainoa eri h\u00e4iri\u00f6suunnat huomioon ottaen.\nT\u00e4m\u00e4 tutkimus tarjoaa arvokasta lis\u00e4tietoa v\u00e4symyksen ja motorisen hallinnan v\u00e4lisest\u00e4 suhteesta alppihiihdossa ja edist\u00e4\u00e4 olemassa olevaa kirjallisuutta asennon ja tasapainon hallinnasta sek\u00e4 urheilullisesta suorituskyvyst\u00e4. Yhteenvetona voidaan kuitenkin todeta, ett\u00e4 tarvitaan lis\u00e4tutkimusta selvitt\u00e4m\u00e4\u00e4n alaraajojen motoriikkaan vaikuttavista tekij\u00f6ist\u00e4.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Muscular fatigue is known to induce biomechanical alterations that can increase the risk of different kind of injuries. These alterations may extend beyond the lower limbs and involve changes in knee and pelvis kinematics, potentially contributing to sport injuries like anterior cruciate ligament (ACL) injury. This study aimed to investigate the influence of fatigue on lower limb motor control in youth alpine skiers using a perturbed postural balance method. The primary objectives were to assess the effects of fatigue on knee alignment (knee valgus) and hip kinematics (hip flexion and hip abduction) during postural balance tasks. \nA total of fourteen healthy national-level alpine skiers, consisting of 11 men and 3 women, with an average age of 17.4 \u00b1 1.8 years, height of 176.4 \u00b1 9.5 cm, and weight of 68.4 \u00b1 14.1 kg, were recruited for this study. Participants were selected from the local alpine ski gymnasium and the local ski club in collaboration with the Kuopio Region Sports Academy. The measurements were conducted using an instrumented treadmill and a reflective marker-based 3D motion capture system. The protocol involved 10 perturbations with varying directions (anterior-posterior, medial-lateral, lateral-medial) and speeds (slow or fast), randomized at intervals. Perturbed balance tests were conducted before and after a fatigue protocol. The measurements were performed with ski boots on. Statistical analysis revealed no significant differences in knee alignment, hip flexion, or hip abduction between the pre-test and post-test measurements. These findings contradicted the initial hypothesis, as we suggested that fatigue did not significantly affect lower limb motor control by using perturbed postural balance. However, it is important to note that the perturbed balance test demonstrated good usability in assessing postural control in multiple directions. \nThis study provides valuable insights into the relationship between fatigue and motor control in alpine skiing and contributes to the existing literature on postural balance and athletic performance. Further research is needed to explore additional factors that may influence lower limb motor control and to gain a deeper understanding of the complex interactions between fatigue, postural balance, and sport-specific performance in alpine skiing.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2023-12-13T07:11:55Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2023-12-13T07:11:55Z (GMT). No. of bitstreams: 0\n Previous issue date: 2023", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "68", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": null, "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "motor control", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "perturbed postural balance", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "neuromuscular fatigue", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "knee valgus", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "pelvis tilt", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "pelvis drop", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Impact of fatigue on lower limb movement control during perturbed balance in youth alpine skiers", "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-202312138281", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "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": "Biomekaniikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Biomechanics", "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.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.subject.oppiainekoodi", "value": "5012", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "tasapaino", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "biomekaniikka", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "alppihiiht\u00e4j\u00e4t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "balance", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "biomechanics", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "alpine skiers", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
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