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Exercise induced oxidative stress : = Examining the antioxidant capabilities of beta-alanine supplementation.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Exercise induced oxidative stress :/
其他題名:	Examining the antioxidant capabilities of beta-alanine supplementation.
作者:	Smith, Abbie E.
面頁冊數:	1 online resource (125 pages)
附註:	Source: Dissertation Abstracts International, Volume: 72-05, Section: B, page: 2741.
Contained By:	Dissertation Abstracts International72-05B.
標題:	Kinesiology. -
電子資源:	click for full text (PQDT)
ISBN:	9781124538228

Exercise induced oxidative stress : = Examining the antioxidant capabilities of beta-alanine supplementation.
Smith, Abbie E.

Exercise induced oxidative stress :Examining the antioxidant capabilities of beta-alanine supplementation. - 1 online resource (125 pages)

Source: Dissertation Abstracts International, Volume: 72-05, Section: B, page: 2741.

Thesis (Ph.D.)--The University of Oklahoma, 2011.

Includes bibliographical references

Purpose. The primary purpose of this study was to evaluate the effects of twenty-eight days of beta-alanine supplementation on markers of oxidative stress in men and women. Methods. Twenty-five men (Age: 22.0 +/- 3.3 yrs; maximal oxygen consumption (VO2max): 3.9 +/- 0.5 l·min-1) and twenty-four women (Age: 21.7 +/- 2.1 yrs; VO2max: 2.6 +/- 0.3 l·min -1) volunteered to participate in this double-blind, placebo-controlled study and were randomly assigned to a beta-alanine (BA, 2 x 800 mg tablets, 3 x per day; CarnoSynRTM, Natural Alternatives Inc, San Marcos, CA; n=) or placebo (PL, 2x 800 mg maltodextrin tablets, 3 x per day; n=) group for twenty-eight days of supplementation. A maximal graded oxygen consumption test (VO2max) on a treadmill was performed to evaluate VO 2max, time to exahustion (VO2TTE), ventilatory threshold (VT) and to establish peak velocity (PV). Baseline blood draws were taken before, immediately post (IP), 2h post and 4h following a 40 min treadmill run at 70%PV to evaluate total antioxidant capacity (TAC), superoxide dismutase (SOD), 8-isoprostane (8ISO) and reduced gluthathione (GSH). Heart rate and ratings of percieved exertion were recorded during the 40 min run. Separate four- [4 x 2 x 2 x 2; acute (base vs. IP vs. 2h vs. 4h) x chronic (pre- vs. post-) x treatment (placebo vs. beta-alanine) x sex (male vs. female)] and two- [2 x 2; time (pre-supplement vs. post-supplement) x treatment (placebo vs. beta-alanine)] way ANOVAS were used to identify and group by time interactions for oxidative stress markers and aerobic performance, respectively. Results. Both groups demonstrated significant improvements (p<0.05) in VO2max. Percent change scores revealed a significant increase in VT for the male BA group. Heart rate and ratings of perceived exertion values were significantly improved from pre- to post-supplementation for the BA group, while the PL group demonstrated non-significant negative changes. There was a significant (p<0.05) exercise induced oxidative effect on all markers. The chronic effects of BA supplementation suggest there is an antioxidant effect on 8-isoprostane and GSH, with no gender differences (p<0.05). Conclusions. The current findings support previous performance research, demonstrated the ergogenic benefit of BA on VT. Additionally, an exercise-induced oxidative stress response, from a 40 minute treadmill run, may be slightly attenuated following twenty-eight days of beta-alanine supplementation for markers of lipid peroxidation and reduced glutathione, for both men and women.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781124538228Subjects--Topical Terms:

721210
Kinesiology.
Index Terms--Genre/Form:

554714
Electronic books.

Exercise induced oxidative stress : = Examining the antioxidant capabilities of beta-alanine supplementation.
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500 $a Source: Dissertation Abstracts International, Volume: 72-05, Section: B, page: 2741.
500 $a Adviser: Jeffrey R. Stout.
502 $a Thesis (Ph.D.)--The University of Oklahoma, 2011.
504 $a Includes bibliographical references
520 $a Purpose. The primary purpose of this study was to evaluate the effects of twenty-eight days of beta-alanine supplementation on markers of oxidative stress in men and women. Methods. Twenty-five men (Age: 22.0 +/- 3.3 yrs; maximal oxygen consumption (VO2max): 3.9 +/- 0.5 l·min-1) and twenty-four women (Age: 21.7 +/- 2.1 yrs; VO2max: 2.6 +/- 0.3 l·min -1) volunteered to participate in this double-blind, placebo-controlled study and were randomly assigned to a beta-alanine (BA, 2 x 800 mg tablets, 3 x per day; CarnoSynRTM, Natural Alternatives Inc, San Marcos, CA; n=) or placebo (PL, 2x 800 mg maltodextrin tablets, 3 x per day; n=) group for twenty-eight days of supplementation. A maximal graded oxygen consumption test (VO2max) on a treadmill was performed to evaluate VO 2max, time to exahustion (VO2TTE), ventilatory threshold (VT) and to establish peak velocity (PV). Baseline blood draws were taken before, immediately post (IP), 2h post and 4h following a 40 min treadmill run at 70%PV to evaluate total antioxidant capacity (TAC), superoxide dismutase (SOD), 8-isoprostane (8ISO) and reduced gluthathione (GSH). Heart rate and ratings of percieved exertion were recorded during the 40 min run. Separate four- [4 x 2 x 2 x 2; acute (base vs. IP vs. 2h vs. 4h) x chronic (pre- vs. post-) x treatment (placebo vs. beta-alanine) x sex (male vs. female)] and two- [2 x 2; time (pre-supplement vs. post-supplement) x treatment (placebo vs. beta-alanine)] way ANOVAS were used to identify and group by time interactions for oxidative stress markers and aerobic performance, respectively. Results. Both groups demonstrated significant improvements (p<0.05) in VO2max. Percent change scores revealed a significant increase in VT for the male BA group. Heart rate and ratings of perceived exertion values were significantly improved from pre- to post-supplementation for the BA group, while the PL group demonstrated non-significant negative changes. There was a significant (p<0.05) exercise induced oxidative effect on all markers. The chronic effects of BA supplementation suggest there is an antioxidant effect on 8-isoprostane and GSH, with no gender differences (p<0.05). Conclusions. The current findings support previous performance research, demonstrated the ergogenic benefit of BA on VT. Additionally, an exercise-induced oxidative stress response, from a 40 minute treadmill run, may be slightly attenuated following twenty-eight days of beta-alanine supplementation for markers of lipid peroxidation and reduced glutathione, for both men and women.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
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