Well, some more data points:
3 1/2 weeks ago:
11:41 pace (SI 152) HR 139
1 week ago:
10:40 pace (SI 125) -- HR 139
Today:
10:39 pace (SI 136) HR 137
Today's run was so under control. My HR alarm went off maybe 10-15 times total. I've never been close to that. Every mile was 139 or lower. Easy consistent pacing and cadence. Felt really good this morning.
I had another question for you guys that have done this (
@-OZ-,
@bushdocda,
@Ned and
@SFBayDuck
I realized I've been treating almost every run like an MAF test. Meaning, I read how the closer you are to your MAF threshold (HR of 140 for me), the faster you'll see gains. So, every run I'm flirting with that number the entire time and constantly going over slightly and then backing it down or dropping below it and trying to get it back to it so that it stays at or as close to 140 as possible from beginning to end.
Today (and with a couple other runs recently), I've started keeping it lower (even beyond the warmup) and keeping the pacing more consistent and letting the HR build up to it toward the end of the run. I get far less spikes but I'm also spending more time below that threshold. For example, today my mile HR splits were 132, 135, 137, 138, 139, 139. My previous runs would be like 138, 140, 140, 140, 140, 141.
I'm sure in the end it doesn't matter that much, but I'm curious if you've heard/read about that or any experience with which way is better to do on a regular basis.