Probe into Mo trainers

NIKE shoes worn by Mo Farah in training are set to be investigated by the IAAF after claims they contain illegal springs. The manufacturer yesterday unveiled its new Zoom Vaporfly Elite shoes, which contain carbon fibre plates in the soles. Nike believe the trainers adhere to guidelines, but an IAAF spokesman said yesterday: ‘We are aware of the speculation around the shoe and have received enquiries about new designs of shoes being worn by elite athletes.’ Former Nike coach Steve Magness has queried whether springs were used in shoes worn by Ethiopian Kenenisa Bekele at the Dubai marathon last month.