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. 2009 Jun 10;90(2):321–328. doi: 10.3945/ajcn.2008.27300

FIGURE 1.

FIGURE 1

Design of the dietary intervention study. The study was divided into 3 dietary periods (DPs). DP1 was from day 1 to day 13 (baseline), during which the subjects consumed a zinc-adequate diet (11 mg Zn/d) to ensure zinc-adequate status. DP2 was from day 14 to day 55 (zinc-depletion diet), during which the subjects consumed a liquid diet (0.6 mg Zn/d) for 7 d followed by a low-zinc diet (4 mg Zn/d) for another 35 d; phytate (1.3 g/d) was added to the diet from day 14 to day 34. DP3 was from day 56 to day 83 (zinc repletion), during which the subjects consumed a zinc-adequate diet (11 mg Zn/d) and were provided supplemental zinc (20 mg Zn/d as zinc gluconate; ZnG) for the first 7 d. Adapted from reference 23.