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.
The 2015 US Open was the 135th edition of the tournament and it was held at the USTA Billie Jean King National Tennis Center in Flushing MeadowsâCorona Park of Queens in New York City, New York, United States.