Physiologist Ross Tucker tells Sarah Barker about the mysteries of pacing and the 800 meters, that 50/50 split of speed and endurance, HERE. Why don't the top 800 runners negative split? Why is the fastest second lap in an 800 a pedestrian 51.60, the pace for a 1:43.20 finish? Enquiring minds want to know.
Adjusting to barefoot running has its challenges, especially for older runners HERE.