Effects of dietary vitamin C and E supplementation on exercise-induced muscle damage among young weightlifters
Dietary supplements vitamin C and E have shown to reduce oxidative stress and muscle damage markers following the exercise. Therefore, it has been hypothesized that markers of oxidative stress and muscle damage induced weightlifting training could be decreased by supplementing subjects with vitamin...
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Main Author: | |
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Format: | Thesis |
Language: | English |
Published: |
2011
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Subjects: | |
Online Access: | http://eprints.usm.my/57437/1/SAWASH%20M%20MOHAMMED%20-%20e.pdf |
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Summary: | Dietary supplements vitamin C and E have shown to reduce oxidative stress and muscle damage markers following the exercise. Therefore, it has been hypothesized that markers of oxidative stress and muscle damage induced weightlifting
training could be decreased by supplementing subjects with vitamin C and E. 32 trained
weightlifters recruited and randomly assigned into two groups: Supplement group were
given 500 mg of vitamin C and 400 IU of vitamin E per day, while placebo group given
maltodextrine, zero calorie per day for 6 weeks. Serum creatine kinase (CK), lactate
dehydrogenase (LDH), aspartate aminotransferase (AST), Alanine transaminase (ALT),
creatinine and urea. Urinary TBARS and Circumferences of mid arm, mid-thigh and calf
were measured before and after supplementation. All data were expressed as median
and interquartile range. All the statistical significance was accepted at p < 0.05. There
was no significant effect (p>0.05) of vitamin supplementation on LDH, CK and urinary
TBARS between two groups. There was no significant effect of vitamin C and E
supplements on hepatic enzymes AST and ALT; there was statistically significant
difference (p<0.05) in renal enzymes, creatinine and urea, but no effect happened and
the values were within the normal reference value. These data indicate that vitamin C
and E were not effective in ameliorating markers of muscle damage and oxidative stress
induced weightlifting training in trained individuals. Moreover, intake of vitamin C and E
for 6 weeks showed no toxic effects on hepatic and renal function. |
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