| 1. |
- Andersson, Helena, et al.
(författare)
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Active recovery training does not affect the antioxidant response to soccer games in elite female players
- 2010
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Ingår i: British Journal of Nutrition. - Cambridge, United Kingdom : Cambridge University Press. - 0007-1145 .- 1475-2662. ; 104:10, s. 1492-1499
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Tidskriftsartikel (refereegranskat)abstract
- Changes in plasma endogenous and dietary antioxidants and oxidative stress markers were studied following two 90 min elite female soccer games separated by 72 h of either active or passive recovery. The active recovery group (n 8) trained for 1 h at 22 and 46 h after the first game (low-intensity cycling and resistance training), while the passive group rested (n 8). Blood samples were taken before the games; immediately after the games; 21, 45 and 69 h after the first game; and immediately after the second game. The oxidative stress markers and antioxidants were not affected by active recovery. The oxidative stress marker GSSG increased by the same extent after both the games, while the lipid peroxidation marker diacron-reactive oxygen metabolite remained unchanged. The endogenous antioxidants total glutathione and uric acid and ferric reducing/antioxidant power increased immediately after both the games with the same amplitude, while increases in cysteine, cysteine-glycine and total thiols reached significant levels only after the second game. The changes in dietary antioxidants after the first game were either rapid and persistent (tocopherols and ascorbic acid (AA) increased; polyphenols decreased) or delayed (carotenoids). This resulted in high pre-second game levels of tocopherols, AA and carotenoids. Polyphenols returned to baseline at 69 h, and were not affected by the second game. In conclusion, the soccer-associated dietary antioxidant defence, but not the endogenous antioxidant defence, is persistent. Similar acute oxidative stress and endogenous antioxidant responses and dissimilar dietary antioxidant reactions occur during two repeated female soccer games. Finally, the complex antioxidant response to soccer is not affected by active recovery training.
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| 2. |
- Andersson, Helena M., 1973-, et al.
(författare)
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Active recovery training does not affect the antioxidant response to soccer games in elite female players
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Changes in plasma endogenous and dietary antioxidants and oxidative stress markers were studied following two 90-min elite female soccer games separated by 72 h of either active or passive recovery. The active recovery group (n=8) trained for one hour at 22 and 46 h after the first game (low-intensity cycling and resistance training)while the passive group rested(n=8). Blood samples were taken before, immediately after, 21, 45 and 69 h after the first and immediately after the second game. The oxidative stress markers and antioxidants were not affected by active recovery. The oxidative stress marker oxidized glutathione increased by the same extent after both games, while the lipid peroxidation marker diacrons reactive-oxygen metabolites remained unchanged. The endogenous antioxidants total glutathione, uric acid and ferric reducing/antioxidant power assay increased immediately after both games with the same amplitude, while increases in cysteine, cysteine-glycine and total thiols reached significant levels only after the second game. The changes in dietary antioxidants after the first game were either rapid and persistent (tocopherols, ascorbic acid increased; polyphenols decreased) or delayed (carotenoids). This resulted in high pre-second game levels of tocopherols, ascorbic acid and carotenoids. Polyphenols returned to baseline at 69 h and were not affected by the second game. In conclusion, the soccer-associated dietary but not endogenous antioxidant defence is persistent. Similar acute oxidative stress and endogenous antioxidant responses and dissimilar dietary antioxidant reactions occur during two repeated female soccer games. Finally, the complex antioxidant response to soccer is not affected by active recovery training.
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