Table 2.
Influence of vitamin C supplementation on oxidative stress markers and vitamin C status in regular training group.
| Before supplementation | After supplementation | P value | |
|---|---|---|---|
| MDA (µmol/L) | 4.26 ± 0.97 | 3.30 ± 0.65 | <0.001 |
| Vitamin C (µmol/L) | 62.27 ± 9.68 | 88.83 ± 16.85 | <0.001 |
| Asc (µmol/L) | 21.23 ± 7.57 | 31.1 ± 9.76 | <0.001 |
| DHA (µmol/L) | 41.03 ± 8.76 | 57.73 ± 10.11 | <0.001 |
| Ratio of DHA/Asc | 2.16 ± 1.02 | 1.99 ± 0.53 | 0.14 |
| MPO (U/L) | 68.83 ± 13.65 | 71.07 ± 17.13 | 0.45 |
Serum malondialdehyde (MDA), total vitamin C, ascorbic acid (Asc), dehydroascorbic acid (DHA), and myeloperoxidase activity (MPO) were measured in 30 male athletes before and after 14 days of vitamin C oral supplementation (2 g/daily). Differences were tested by paired-samples t-test.