Sailboarding at the Summer Olympics Sailboarding at the Summer Olympics Sailboarding or Windsurfing has been one of the Olympic sailing events at the Summer Olympics since 1984 for men and 1992 for women. All sailors use the same One Design boards, daggerboards, fins and sails. The equipment is chosen to allow racing in a wide range of sailing conditions, as during the Olympic Games events must take place as scheduled whether or not there is enough wind for planing. Multiple medal winners include Alessandra Sensini and Barbara Kendall with three medals; and Bruce Kendall (brother of Barbara Kendall) and Dorian van Rijsselberghe with two medals.
Plasma renin activity Plasma renin activity Plasma renin activity (PRA), also known as the renin (active) assay or random plasma renin, is a measure of the activity of the plasma enzyme renin, which plays a major role in the body's regulation of blood pressure, thirst, and urine output. Measure of direct renin concentration (DRC) is technically more demanding, and hence PRA is used instead. DRC assays are still in evolution, and generally a conversion factor of PRA (ng/mL/h) to DRC (mU/L) is 8.2. A Recently developed and already commonly used automated DRC assay uses the conversion factor is 12. PRA is sometimes measured,