Doh - can't read Norwegian - did he race against non amputees? Pretty cool. Advangage?? why don't they talk to a bunch of amputees and ask them if they think its and advantage to running to be missing parts of their legs...... many struggle just to walk much less run. I'll bet that it takes a huge amount of balance and control. It could be that there is perhaps some sort of mechanical advantage to the construction of his lower limbs, but when looking at the whole picture it takes a lot of effort to make those limbs perform. Good for him!