Good article by low carb proponent Barry Groves on athletic diet, with reference to endurance athletes:

http://www.second-opinions.co.uk/athletic_diet.html


As a side note, I weight train very intensely, and my last 2 and a half years have been on low carb (75g and less per day).

My performance has increased at a very steady pace, so my diet does not seem to have had any harmful effects.