The new year rings in new changes for athletes found guilty of doping.

For first offenders, the World Anti-Doping agency has doubled automatic bans from two years to four, with athletes banned for life if they test positive again.

Kenya has sufferred in recent months after a number of runners tested positive - including champion Rita Jeptoo.

Al Jazeera's Haru Mutasa reports from Iten.

Source: Al Jazeera