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dc.contributor.authorZandonai, Thomas
dc.contributor.authorTam, Enrico
dc.contributor.authorBruseghini, Paolo
dc.contributor.authorCapelli, Carlo
dc.contributor.authorBaraldo, Massimo
dc.contributor.authorChiamulera, Cristiano
dc.date.accessioned2019-11-21T14:24:12Z
dc.date.available2019-11-21T14:24:12Z
dc.date.created2018-11-13T13:17:31Z
dc.date.issued2019
dc.identifier.citationScandinavian Journal of Medicine & Science in Sports. 2019, 29, 430-439.nb_NO
dc.identifier.issn0905-7188
dc.identifier.urihttp://hdl.handle.net/11250/2629886
dc.descriptionI Brage finner du siste tekst-versjon av artikkelen, og den kan inneholde ubetydelige forskjeller fra forlagets pdf-versjon. Forlagets pdf-versjon finner du på wiley.com / In Brage you'll find the final text version of the article, and it may contain insignificant differences from the journal's pdf version. The definitive version is available at wiley.comnb_NO
dc.description.abstractThe use of nicotine administered through smokeless tobacco (snus) has increased among athletes. The purpose of this study was to investigate the ergogenic effects of snus on aerobic performance during exercise until exhaustion in athletes after abstinence or satiety nicotine conditions. The study utilised a randomised, controlled, within‐subject design experiment. Sixteen male snus‐user athletes completed an exercise until exhaustion at a constant load of their 80% of VO2max (calculated by a maximal incremental test) in two separate sessions, corresponding to nicotine conditions: 12‐hour overnight abstinence and satiety. A portion of 1 g of snus (~ 8 mg/g of nicotine) was administered 25 minutes before each experimental test. In each session, time to exhaustion (TTE), global rating of perceived exertion, cardiovascular and metabolic responses, and muscle and cerebral oxygenation were measured. Nicotine and cotinine analysis confirmed session conditions (abstinence or satiety). Snus induced a significant increase (+13.1%) of TTE following abstinence (24.1 ± 10.7 min) compared to satiety condition (20.9 ± 8.0 min; P=0.0131). The baseline values revealed that abstinence of snus induced significant increase in the oxygenation of the muscular tissues (+4%), in metabolic values and in cardiovascular parameters, when compared to satiety condition. Our results indicate an increase of exercise performance (+13.1% TTE) due to snus administration in an abstinence condition. Considering that twelve hours of abstinence from snus‐contained nicotine affected metabolic, cardiovascular and muscular tissue oxygenation, we suggest that snus administration at test time might relieve these withdrawal changes and yield an increase in time to exhaustion.nb_NO
dc.language.isoengnb_NO
dc.subjectendurance performancenb_NO
dc.subjectNIRSnb_NO
dc.subjectRPEnb_NO
dc.subjectsnusnb_NO
dc.subjecttime to exhaustionnb_NO
dc.titleExercise performance increase in smokeless tobacco‐user athletes after overnight nicotine abstinencenb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber430-439nb_NO
dc.source.volume29nb_NO
dc.source.journalScandinavian Journal of Medicine & Science in Sportsnb_NO
dc.identifier.doi10.1111/sms.13333
dc.identifier.cristin1629932
dc.description.localcodeSeksjon for fysisk prestasjonsevne / Department of Physical Performancenb_NO
cristin.unitcode150,31,0,0
cristin.unitnameSeksjon for fysisk prestasjonsevne
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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