**Introduction**

The Power over time is a presentation of the relationship between produced mechanical power (P) and the duration to exhaustion (t). The P(t) relationship presents a hyperbola. The data can be presented with a normal x-axis (A) or a logaritmic x-axis (B).

The P(t) curve is constructed using the MMP points between 5-seconds and 60-minutes.

**Results**

Examination of the P(t) curve leads to a set of cycling performance parameters:

**Pmax:**maximal sprinting power at t=0.**MAP:**maximal aerobic power, assymptotic value for ROI-1 efforts.**P20:**the highest power during 20-minutes.**FTP:**the highest power during 60-minutes.**CP:**(Critical power) - the dotted horizontal line shows the asymptotic value CP of the hyperbolic relation.

Learn more about these cycling performance parameters.

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