Serial lactate measures also help assess response to therapy. The half-life of lactate is around 20 minutes, even in septic patients. If the lactate is persistently elevated, it's not because the body can't get rid of it, but because the body continues producing it, shifting to anaerobic metabolism.
That's because the Philadelphia Rock 'n' Roll Half Marathon, which has been run in the city for 38 years, has a new date for 2015, landing on Oct. 31.
Gunder HÃ¤gg (right) defeats Arne Andersson with a world record for the mile of 4:06.2 min in Gothenburg in 1942. The mile run (1,760 yards or exactly 1,609.344 metres) is a middle-distance foot race. The history of the mile run event began in England, where it was used as a distance for gambling races. It survived track and field's switch to metric distances in the 1900s and retained its popularity, with the chase for the four-minute mile in the 1950s a high point for the race.