I found these very interesting. Seeing how badly the majority of the people in the videos are toe-pointed-at-the-sky-heel-striking I see why 80% of runners have injuries. The smooth stride of the barefooted runner and the runner in VFF's just look so less jarring and painful.
"Video of a series of runners filmed at 300 frames/sec near the ~17.5 mile mark of the 2010 Boston Marathon (on Washington St. near the intersection with Commonwealth Ave.). All were on a sub-3:00 marathon pace at this point in the race. Note the barefoot runner near the middle of the clip. Courtesy ofhttp://www.runblogger.com".
"Video of a series of runners filmed at 300 frames/sec near the ~3 mile mark ofa local level 5K. All were middle of the pack runners. Courtesy ofhttp://www.runblogger.com."
"While living I want to live well." - Geronimo