Performance Training in Death Valley with COSMED K4b2 during the Red Bull Project Endurance 2013.

Endurance sport met endurance science in Death Valley during Red Bull Project Endurance.

For five days, 11 scientists from around the world used six championship-level endurance athletes as test subjects, applying cutting edge technology to find the cutting edge. How much further can endurance go? Can recovery be improved or sped up? What limits endurance, both physiologically and mentally?

Athletes included cyclocross champion Tim Johnson, endurance mountain biker Rebecca Rusch, ultra-runners Karl Metzler and Dakota Jones, triathlete Kirsten Sweetland, and off-road motocross racer Kendall Norman.

See image of testing session with K4b2: click here

See the video here: click here