|  |  | Day 1 | Day 56 | Day 56 ANCOVA | |||
---|---|---|---|---|---|---|---|---|
 | Treatment | N | Mean | SEM | Mean | SEM | Adjusted mean | SEM |
Vitamin C (mg/L) | 1RDA + Q10 | 24 | 5.30 | 0.51 | 6.02 | 1.23 | 6.23 | 0.62 |
 | 3RDA | 26 | 6.87 | 1.04 | 6.42 | 1.26 | 6.30 | 0.59 |
 | Placebo | 29 | 6.62 | 0.61 | 5.21 | 0.97 | 5.14 | 0.56 |
Vitamin D (mg/L) | 1RDA + Q10 | 24 | 25.41 | 2.40 | 30.5a | 6.22 | 28.73* | 1.51 |
 | 3RDA | 26 | 24.27 | 2.19 | 30.1a | 5.90 | 29.23* | 1.45 |
 | Placebo | 29 | 20.22 | 2.22 | 21.76 | 4.04 | 23.97 | 1.39 |
Vitamin E (mg/L) | 1RDA + Q10 | 24 | 11.61 | 0.56 | 12.1 | 2.47 | 12.00 | 0.40 |
 | 3RDA | 26 | 11.73 | 0.55 | 12.55 | 2.46 | 12.36 | 0.39 |
 | Placebo | 29 | 11.12 | 0.44 | 11.36 | 2.11 | 11.62 | 0.37 |
CoQ10 (μg/L) | 1RDA + Q10 | 24 | 562.3 | 46.0 | 586.3a | 119.7 | 541.8 | 36.64 |
 | 3RDA | 26 | 473.1 | 33.3 | 452.5 | 88.8 | 463.4 | 34.41 |
 | Placebo | 29 | 447.1 | 26.3 | 437.8 | 81.3 | 464.8 | 32.89 |
Iron (μmol/L) | 1RDA + Q10 | 24 | 1010.7 | 75.8 | 951.0 | 194.1 | 954.2 | 75.41 |
 | 3RDA | 26 | 1064.4 | 100.1 | 1054.9 | 206.9 | 1042.4 | 72.55 |
 | Placebo | 29 | 992.9 | 89.6 | 985.2 | 183.0 | 993.7 | 68.65 |
Zinc (μmol/L) | 1RDA + Q10 | 24 | 13.16 | 0.52 | 13.65 | 2.79 | 13.66 | 0.31 |
 | 3RDA | 26 | 13.13 | 0.28 | 13.34 | 2.62 | 13.35 | 0.30 |
 | Placebo | 29 | 13.26 | 0.22 | 13.23 | 2.46 | 13.22 | 0.28 |
Homocysteine (μmol/L) | 1RDA + Q10 | 24 | 11.79 | 0.61 | 10.54 | 2.15 | 10.35* | 0.45 |
 | 3RDA | 26 | 11.83 | 0.75 | 9.5a | 1.86 | 9.30* | 0.43 |
 | Placebo | 29 | 10.76 | 0.41 | 11.36 | 2.11 | 11.71 | 0.41 |