Figure 2.

The protocol of dietary intervention. This intervention study had three periods, including baseline for 3 days, low‐sodium diet (51.3 mmol/d sodium or 3.0 g/d NaCl) for 7 days, and high‐sodium diet (307.7 mmol/d sodium or 18 g/d NaCl) for 7 days. Anthropometric data were collected during baseline. BP measured at each day of baseline and the 6th and 7th day of low‐sodium and high‐sodium period. Blood and 24‐hour urine samples were obtained at the last day of each period