FIGURE 6.

(A) Simulation of energy metabolism during a 1,000 m time trial of a track cyclist. This calculation is based on the recorded power output from an Olympic track cyclist using the equations from the Mader model, the computer simulation calculates the behavior of glycolytic flux (green line; expressed per kg muscle), PCr levels (blue line), and oxygen uptake (red line) in dependency of the power output (light blue shade). Physiological variables used in the simulation were $\dot{\mathrm{V}}$ O_2max: 65 ml min⁻¹ kg⁻¹; ν_La.max: 0.9 mmol^.L⁻¹ s⁻¹; bodyweight: 95 kg; and active muscle mass: 40%. (B) Simulation of energy metabolism for the power output during the 1,000 m time trial as conducted by the athlete in Panel 6A but possessing a lower maximal glycolytic rate. The input parameters were $\dot{\mathrm{V}}$ O_2max: 65 ml min⁻¹ kg⁻¹; ν_La.max: 0.4 mmol^.L⁻¹ s⁻¹; bodyweight: 95 kg; and active muscle mass: 40%.