A potential world champion in an endurance sport like cycling needs to maintain a power output of 2.7 watts of body weight for 45 minutes (5,94 watt/kilo). ... Mere recreational mortals should consider themselves optimally fit once they attain a more down-to-earth ratio of 1.6 watts per pound of body weight (3,52 watt//kilo)

outside magazine, the drop zone, february 2005.

na toll.