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dc.contributor.authorOlstad, Bjørn Harald
dc.contributor.authorWathne, Henrik
dc.contributor.authorGonjo, Tomohiro
dc.date.accessioned2021-02-02T12:06:48Z
dc.date.available2021-02-02T12:06:48Z
dc.date.created2020-10-02T12:54:08Z
dc.date.issued2020
dc.identifier.citationInternational Journal of Environmental Research and Public Health (IJERPH). 2020, 17(17), Artikkel 6257.en_US
dc.identifier.issn1661-7827
dc.identifier.urihttps://hdl.handle.net/11250/2725796
dc.descriptionThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).en_US
dc.description.abstractBackground and aim: To identify kinematic variables related to short course 100 m breaststroke performance. Methods: An automatic race analysis system was utilized to obtain start (0–15 m), turn (5 m before the wall until 10 m out), finish (95–100 m), and clean swimming (the rest of the race) segment times as well as cycle rate and cycle length during each swimming cycle from 15 male swimmers during a 100 m breaststroke race. A bivariate correlation and a partial correlation were employed to assess the relationship between each variable and swimming time. Results: Turns were the largest time contributor to the finishing time (44.30 ± 0.58%), followed by clean swimming (38.93 ± 0.50%), start (11.39 ± 0.22%), and finish (5.36 ± 0.18%). The finishing time was correlated (p < 0.001) with start segment time (r = 0.979), clean swimming time (r = 0.940), and 10 m turn-out time (r = 0.829). The clean swimming time was associated with the finishing time, but cycle rate and cycle length were not. In both start and turns, the peak velocity (i.e., take-off and push-off velocity) and the transition velocity were related to the segment time (r ≤ −0.673, p ≤ 0.006). Conclusions: Breaststroke training should focus on: (I) 15 m start with generating high take-off velocity, (II) improving clean swimming velocity by finding an optimal balance between cycle length and rate, (III) 10 m turn-out with maintaining a strong wall push-off, and (IV) establishing a high transition velocity from underwater to surface swimming.en_US
dc.language.isoengen_US
dc.subjectswimming race analysisen_US
dc.subjectautomaticen_US
dc.subjectkinematicsen_US
dc.subjectsegmentsen_US
dc.subjecttechniquesen_US
dc.titleKey Factors Related to Short Course 100 m Breaststroke Performanceen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© 2020 by the authors.en_US
dc.source.pagenumber16en_US
dc.source.volume17en_US
dc.source.journalInternational Journal of Environmental Research and Public Health (IJERPH)en_US
dc.source.issue17en_US
dc.identifier.doi10.3390/ijerph17176257
dc.identifier.cristin1836589
dc.description.localcodeInstitutt for fysisk prestasjonsevne / Department of Physical Performanceen_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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