Although the lactate threshold is defined as the point when lactic acid starts to accumulate, some testers approximate this by using the point at which lactate reaches a concentration of 4 mM (at rest it is around 1 mM).
The Greater Milwaukee Open was a regular golf tournament in Wisconsin on the PGA Tour. It was played annually in July in the Milwaukee suburb of Brown Deer at the Brown Deer Park Golf Course. U.S. Bancorp was the main sponsor of the tournament. The 2009 purse was $4 million with a winner's share of $720,000.
US 41 is being upgraded to Interstate Highway standards between Milwaukee and Green Bay. Interchange upgrades are underway on US 41 near Fond du Lac, Oshkosh and Green Bay. By the end of 2015, US 41 will be converted from the existing four-lane freeway to a six-lane freeway in both Milwaukee and Green Bay.