NOT SO FAST!
Starting a race at high speed is the oldest error
in the book, but a new study2 shows the true cost – the equivalent of three minutes in a one-hour race. The researchers measured blood-lactate levels in elite endurance runners as they ran at paces below, at and above their lactate thresholds (see below). When they exceeded their threshold the oxygen ‘cost’ of running rose by 5.5 per cent. ‘This emphasises the importance of avoiding intensities above lactate threshold in the early stages of a predominantly aerobic endurance race,’ say the researchers.