Figure 1. Timescale of protocol.
After an initial screening visit (top panel), subjects reported to the laboratory after their usual dietary sodium intake, designated as day 0, then underwent 5 days of dietary sodium restriction (10 mmol day−1). Middle panel denotes the systemic infusions of terbutaline (TRB), conducted on day 0 and day 6. The bottom panel shows the forearm blood flow (FBF) protocol that was conducted after the TRB trial on day 6. SNP, sodium nitroprusside; ISO, isoprenaline; ACh, acetylcholine.