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Oxidative Stress in Col.egiate Cross Country Skiers in Mid- and post-Seasons

Journal.of Biosciences and Medicines 2024年第5期12卷 99-110页

作者： Scott p. Jerome kriya l. dunl.p Ava M. parrish Matthew l. l.wman Emil. M. Shipman l.wrence K. Duffy Arl.igh J. Reynol.s Department of Chemistry & Biochemistry University of Alaska Fairbanks Fairbanks AK USA Institute of Arctic Biol.gy University of Alaska Fairbanks Fairbanks AK USA Department of Biol.gy & Wil.l.fe University of Alaska Fairbanks Fairbanks AK USA Department of Veterinary Medicine University of Alaska Fairbanks Fairbanks AK USA

purpose: The oxidative stress (OS) hypothesis of overtraining syndrome argues that increased production of free radical. through exercise cause muscl. fatigue and damage resul.ing in l.wer athl.tic performance. Several.studies have investigated OS immediatel. before and after exercise bouts in a training macrocycl.. Our study aimed to compare OS of endurance athl.tes between a competition macrocycl. and the immediate post-season recovery macrocycl.. In addition, we aimed to identify athl.tes who experienced an unexpl.inabl. drop in athl.tic performance during the competition season in order to compare their OS to those who experienced no drop in performance. Methods: Fifteen members of the University of Al.ska Fairbanks cross country ski team vol.nteered for this study. Bl.od sampl.s were taken in earl. February (“mid-season”) and l.te April.(“post-season”). participants compl.ted questionnaires regarding physical.activity and athl.tic performance at the time of the bl.od draws. pl.sma was anal.zed for 4-hydroxynonenal.sup> p>(HNE), nitrotyrosine,p> p>nitric oxide (NOX), and superoxide dismutase (SOD). Significance was determined by Wil.oxon and Mann-Whitney tests. Resul.s: participants displ.yed significantl. higher (p Concl.sion: Signs of oxidative stress and mitigation during the post-season recovery macrocycl. were higher in athl.tes who reported experiencing a drop in athl.tic performance during the competition season macrocycl..

关键词： Oxidative Stress 4-Hydroxynonenal Superoxide Dismutase Athl.tic performance Training Macrocycl.

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