Näytä suppeat kuvailutiedot

dc.contributor.advisorKyröläinen, Heikki
dc.contributor.advisorTaipale, Ritva
dc.contributor.advisorKainulainen, Heikki
dc.contributor.authorMyllyaho, Moona
dc.date.accessioned2016-04-09T11:55:55Z
dc.date.available2016-04-09T11:55:55Z
dc.date.issued2016
dc.identifier.otheroai:jykdok.linneanet.fi:1525399
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/49291
dc.description.abstractThe purpose of the present study was to examine the effects of hormonal contraceptive use on neuromuscular, cardiorespiratory and body composition adaptations following combined strength and endurance training period. Methods. Nineteen recreationally active women; 11 who had at least one year of hormonal contraceptive use (age 294 yr; BMI 212 kg/m2; VO2max 444 ml/kg/min) and 8 who had never used hormonal contraceptives (age 315 yr; BMI 222 kg/m2; VO2max 414 ml/kg/min) participated in the present study of combined strength and endurance training for 10 weeks. Training consisted of two maximal and explosive strength training sessions, and two high-intensity interval training sessions per week. Serum basal hormone levels, maximal bilateral isometric strength, maximal unilateral isometric knee extension and flexion, maximal bilateral dynamic leg press (1RM), counter movement jump (CMJ), upper body isometric strength, dynamic muscle endurance, a 3000 m running test and an incremental maximal running test were measured prior to the intervention and after the 10 weeks training period. Results. There were no statistically significant differences between groups’ improvements in any measured strength, endurance or body composition variables. The hormonal contraception users (HC) significantly improved their performance in maximal isometric leg press (14±15%, p<0.05), isometric knee flexion (11±14%, p<0.05), isometric bench press (9±7%, p<0.001), dynamic leg press (10±5% p<0.001), countermovement jump (6±7%, p<0.01), push-ups (14±16%, p<0.05) and sit-ups (22±25%, p<0.05). The non-users (NHC) had significant improvements in isometric leg press (6±6%, p<0.05), isometric knee extension (9±11%, p<0.05), dynamic leg press (7±4%, p<0.01), countermovement jump (11±6%, p<0.001), push-ups (20±17%, p<0.05) and sit-ups (13±11%, p<0.05). Maximal oxygen consumption (VO2max) remained unchanged in both groups. In the 3000 m time trial the HC group decreased their running time by 2±4% (p=0.162) and the NHC group by 3±2% (p<0.05). The improvement in time trial was significant only within the NHC group, however, there was not a significant difference between groups’ improvements (p=0.559). There were no statistically significant differences between groups’ improvements in body composition, however, a trend for greater increase in fat free mass was observed in NHC than in HC women (p=0.065). The HC group increased fat free mass by 11% (p<0.05) and the NHC group by 21% (p<0.001). Total fat was reduced in the HC group by 510% (p=0.158) and in the NHC group by 56% (p<0.05). Summary and conclusions. High-intensity combined strength and endurance training resulted in significant improvements in neuromuscular performance and fat free mass in both groups. In addition, there were significant improvements in 3000 m running performance and decreases in total body fat within the NHC group. These findings suggest that combined strength and endurance training is a useful method for improving physical fitness and health in recreationally active women, and hormonal contraception use does not appear to impair the physical performance or body composition.en
dc.format.extent1 verkkoaineisto (79 s.)
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.rightsJulkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty.fi
dc.rightsThis publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited.en
dc.subject.otherhormonal contraceptives
dc.subject.othercombined strength and endurance training
dc.subject.otherphysical performance
dc.subject.otherbody composition
dc.subject.otherhormonal adaptations
dc.titleEffects of hormonal contraceptives on physical performance and body composition
dc.identifier.urnURN:NBN:fi:jyu-201604092035
dc.type.ontasotPro gradu -tutkielmafi
dc.type.ontasotMaster’s thesisen
dc.contributor.tiedekuntaLiikuntatieteellinen tiedekuntafi
dc.contributor.tiedekuntaFaculty of Sport and Health Sciencesen
dc.contributor.laitosLiikuntabiologian laitosfi
dc.contributor.laitosDepartment of Biology of Physical Activityen
dc.contributor.yliopistoUniversity of Jyväskyläen
dc.contributor.yliopistoJyväskylän yliopistofi
dc.contributor.oppiaineLiikuntafysiologiafi
dc.contributor.oppiaineExercise Physiologyen
dc.date.updated2016-04-09T11:55:56Z
dc.rights.accesslevelopenAccessfi
dc.type.publicationmasterThesis
dc.contributor.oppiainekoodi5011
dc.subject.ysosuorituskyky
dc.subject.ysokehonkoostumus
dc.subject.ysohormonaaliset tekijät
dc.subject.ysovoimaharjoittelu
dc.subject.ysokestävyysharjoittelu
dc.format.contentfulltext
dc.type.okmG2


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