Junior said he needed to pre-run and see the HR to set the target based on perceived effort.
Set the rate on PRE to the venue, then run on HR during event.
Just like choosing tire pressure.
I am amazed at what the trained human body can perceive (I can typically guess .010" within 3% - bored thing I do with calipers).
Wurf, Finney, Cancellara and many elite runners and rowers do this. Some kinda zen zone thing.
Last edited by Doge; 06-17-19 at 08:25 PM.