*3.2. Dietary Intake of Vitamin C*

Analysis of the food and beverage records indicated a vitamin C intake of ~30 mg/day at baseline (Table 2). Addition of the vitamin C tablet or half a kiwifruit per day to the daily diet of the two groups resulted in an increase in vitamin C intake, with both groups approaching ~75 mg (Table 2), and no difference between the two groups (*P* = 0.512). Following four weeks washout, the vitamin C intake had returned to baseline levels.

**Table 2.** Change in vitamin C intake and ascorbate concentration in body fluids, cells and tissue following supplementation with 50 mg vitamin C or half a kiwifruit per day for six weeks.


a Data represent mean ± SEM; <sup>b</sup> *P* values were determined by unpaired *t*-test of vitamin C group *versus* kiwifruit group post-intervention following subtraction of baseline values; \* *P* < 0.05 and \*\* *P* < 0.01 and \*\*\* *P* < 0.001 for paired *t*-test of intervention *versus* baseline. nd = not determined.
