Test week for cycling using heart rate?

Hi there,

A client of mine will be doing his test week shortly, for cycling (FTP test, power profile test). However, he does not have an indoor trainer showing effect or watt. He has a heart rate monitor however, so would that be sufficient?

It would measure heart rate and establish his zones, but not “Cycling power profile”. Unless athletica makes a sort of qualified guess?

Cheers,

Erik