title: [Oxidative stress in Masters swimmers following high-intensity (interval) training (HI(I)T)].
abstract: Increased oxidative stress (OS) can promote diseases in the long term, but it can also trigger cellular adaptations in the short term. The present study aims to analyze whether a 3-month high-intensity (interval) training (HI(I)T) affects OS in 24 Masters swimmers (22-67 years) before (= basal) and after an all-out performance (swimming step-test). Data were analyzed for the entire group and differentiated according to sex and age (under 50 years (U50) and over 50 years (O50)). Prior to the HI(I)T intervention, a significant increase in OS from the basal to the all-out value was observed among the entire group and in the O50-subjects (subgroup analysis). Furthermore, significant increases in basal OS were evident for the entire group post-HI(I)T, but OS was only significantly increased in men in the subgroup analysis. No significant results were observed for women and U50-subjects. The response by Masters swimmers to HI(I)T depends on age and sex.
authors.affiliation: SG Osnabrück, Osnabrück, Deutschland. janina-braun@t-online.de.|Landesstützpunkt Schwimmen Osnabrück, Osnabrück, Deutschland. janina-braun@t-online.de.|, Krelkauer Weg 3, 49205, Hasbergen, Deutschland. janina-braun@t-online.de.
authors.forename: Janina
authors.initials: J
authors.lastname: Braun
authors.affiliation: Abteilung für Molekulare und Zelluläre Sportmedizin, Institut für Kreislaufforschung und Sportmedizin, Deutsche Sporthochschule Köln, Köln, Deutschland.
authors.forename: Magd
authors.initials: M
authors.lastname: Masoud
authors.affiliation: Abteilung für Molekulare und Zelluläre Sportmedizin, Institut für Kreislaufforschung und Sportmedizin, Deutsche Sporthochschule Köln, Köln, Deutschland.|Institut für Vermittlungskompetenz in den Sportarten, Deutsche Sporthochschule Köln, Köln, Deutschland.
authors.forename: Klara
authors.initials: K
authors.lastname: Brixius
authors.affiliation: Abteilung für Molekulare und Zelluläre Sportmedizin, Institut für Kreislaufforschung und Sportmedizin, Deutsche Sporthochschule Köln, Köln, Deutschland.
authors.forename: Christian
authors.initials: C
authors.lastname: Brinkmann
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D005609:Free Radicals / Q000378:metabolism; D000072696:High-Intensity Interval Training / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D018384:Oxidative Stress / Q000502:physiology*; D005082:Physical Exertion / Q000502:physiology*; D017382:Reactive Oxygen Species / Q000378:metabolism; D012737:Sex Factors; D013550:Swimming / Q000502:physiology*; D055815:Young Adult
chemical_list: D005609:Free Radicals; D017382:Reactive Oxygen Species
keywords: Free radicals; HI(I)T; High performance sports; Swimming