If you're following the HADD method do you do these two 80% runs from the very start? Isn't that spoiling all the gains from the low HR training - or are these basically recovery runs then?
My ambition is running a marathon at a low HR but posting what I'd consider a decent time for me (3:45 - 4). Currently I'm a long way off that - on my runs under 70% I'm running at about 11 minute miles but I'm not really applying any science or method to it really, just keeping the HR low.
This is a great discusion. I understand the basics of base and HADD training but what I don't quite grasp is the next stage up.
After establishing base, when we train for a race do we just put all these easy, low HR runs to one side and do the same mix of Speedwork/Tempos etc as we might have done anyway - or do some of the disciplines continue? Also what would happen if instead of including higher HR (anaerobic) runs in our training schedule leading up to a marathon we just stuck to low HR training - would that mean one would only be capable of running a marathon in the aerobic range?
From what I can understand running a marathon at low HR/aerobic range makes more sense as we're burning fat rather than glycogen. Is this right?