these somax videos/articles I watched/read today were actually pretty good..
http://www.somaxsports.com/video.php?analysis=sub-2-hour-marathonhttp://www.somaxsports.com/eliterunner.phphttp://www.somaxsports.com/microfiber.phpregardless of their products/services (microfiber reduction etc), there was some good info in these videos: vertical displacement, stride angle, ankle position, crossover, etc.. The comparisons between the elite african vs american runners was pretty good.
A runner with a 3 inch bounce lands with six times his body weight on each leg. For a 150 lb. runner, this is 900 lbs. Since a runner takes 1,000 strides per mile, this adds up to a total of 450,000 lbs. on each leg per mile. During a marathon, it totals 11,790,000 lbs. on each leg.
sammy wanjiru had amazing form.. beautiful.