Velocity of the winner (bold) and the runners successively 5 places further back (e.g., 5^th, 10^th, 15^th) from the Beijing Olympic men's 10 km race.

<p>Velocity of the winner (bold) and the runners successively 5 places further back (e.g., 5^th, 10^th, 15^th) from the Beijing Olympic men's 10 km race.</p

Example of a subject running two 10 km races on a treadmill.

<p>The pace during the first 4 km was set and could be varied after this point. The predictor of the slowdown at 4 km during a run at a ‘bad day’ (broken line) is the high Hazard Score in the 3–4 km interval, which reflects larger homeostatic disturbances.</p

Velolcity, RPE and the Hazard Score.

<p>Changes in velocity (A), Rate of Perceived Exertion (RPE) (B) and the Hazard Score (C) in 9 competitive simulations in running or cycling events that required from 4 to 60 minutes.</p

Relation between the Hazard Score and the change in pace.

<p>Schematic pace (A), heart rate (HRmax%) (B), muscle glycogen store (C), core temperature (D), Rating of Perceived Exertion (RPE) (E) and Hazard Score (F) as a function of percent distance completed of a hypothetical athlete performing a race with a fast start strategy and with an even strategy and the resulting relation between the Hazard Score and the change in pace during the race (G).</p

The acceleration/deceleration of athletes as function of the Hazard score.

<p>The acceleration/deceleration of athletes as function of the Hazard score.</p