3.3. Dietary Assessment
The usual dietary intake of the participants is shown in Participant adherence to the low-antioxidant diet (the two days preceding each laboratory visit) was confirmed by examining food records, which showed the avoidance of high-antioxidant foods and beverages and selection of the recommended low-antioxidant items. Intakes of select antioxidant micronutrients during the low-antioxidant diet periods are shown in Antioxidant micronutrient intakes during the low-antioxidant diet and usual diet did not differ between grape and placebo, 