The meaning of “OU”

Hi all

I’m doing the Gran Fondo Training Plan and although I am still on Week 2, I’ve noticed that on Week 4, Day 4, “The Long Ride - SST Long”, on some of the blocks it says: “OU 30 mins 155w”.
Can anyone please explain what exactly means?
Thank you in advance.

It means ‘over under’. The interval will alternate so they are slightly above your FTP and then slightly below your FTP, averaging at 155 watts.

1 Like

Thank you John for your very prompt reply.
It makes sense once you know what it means.

Thanks, they’re a good workout to increase your FTP.

Yes, I’m trying to improve my FTP. Not so easy at my age, but I will give a try!