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 tournament debuted in 1968 as the Greater Milwaukee Open (or GMO), competing against the British Open by offering a $200,000 purse (second highest on the Tour) with a $40,000 first prize. Lee Trevino, the recent U.S. Open winner, chose to play in the more lucrative GMO instead of the 1968 British Open.