High altitude training benefits may be a myth

The training, which typically means living and sleeping at about 2400m but coming down to sea level to train, has been used by the English soccer team, the US speed-skating team, cyclists, swimmers and top-ranked tennis player Novak Djokovic.

But a Swiss study, unlike many previous investigations, included a control group and found no proof that elite cyclists spending 16 hours a day in rooms simulating oxygen levels at 3000m performed any better than those living with sea-level oxygen.

Swiss researcher Carsten Lundby took muscle samples, finding no suggestion the athletes at higher altitude were using energy