Fig. 5

A Example of lactate curves of a participant who has performed all four tests that are listed in Table 1. Note that the steeper the increase of power over time, the higher the workload where a lactate concentration of 4 mmol.L^− 1 is reached. B Overall data showing how the power increase per unit of time affects the power where a blood lactate concentration of 4 mmol.L^− 1 is reached. Above each point x/y is given whereby x is the increase of power per step in W and where y is the duration of each step in minutes