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.
To run one mile, complete four full laps, plus a further 9.34 meters. The extra length is because the standard running track size is only 400 meters. On a 400 meter track the start line is 9.34 meters further back.