Oxygen Power: Performance Tables For Distance Runners in 1979. According to Daniels, who's rarely off by more than a smidgen or two, a VO2 max of 83 roughly suggests a 2:06 marathon.The problem is, Daniels is talking about the oxygen power of runners

therapist and biomechanist Irene Davis from the University of Delaware's Running Injury Clinic. "Your threshold could be at 10 miles a week, or 100, but once you exceed it, you get injured." Various studies have identified injury thresholds at 11, 25, and 40

of Sports Medicine, which calls for 590-1180ml per hour.For the first time in its 107-year history, the Boston Marathon this spring provided all 20,000 runners with a fold-out pamphlet from the American Running Association and the American Medical Athletic