I was scheduled to run 45-50 minutes last night at a 10:00 minute pace. The is from the Jeff Galloway 4:00 marathon schedule that I am following. Prior to the Las Vegas Marathon, I was able to run at about 5.3 – 5.5 mph and easily keep my heart rate under 150 (70% Karvonen). And I was able to crank the speed up to 7mph, and stay around the 85-90% zone. But last night, I had the treadmill set to 6mph (10:00 minute pace), and my heart rate was getting up into the 170s. In fact I slowed down to a 11:00 minute average pace to try to keep my HR from getting too high. I wasn’t winded at all, and the run didn’t seem too hard. In order to get my heart rate under 150, I pretty much need to slow down to 4.3 mph. I can walk at that pace. Ouch!
Not sure if this is because I have been fighting a cold. Or because I ran the Las Vegas Marathon, and maybe haven’t recovered fully. Or maybe because I was doing more speed training. According to Phill Maffetone, anaerobic training can wreck having on aerobic fitness. John L. Parker teaches to mix easy and hard runs. And that what I had done later in my marathon training, and it actually had seemed to improve my aerobic fitness at the time.
Last nights 10:00 minute pace run was not supposed to be a “hard” run. Tonight I am scheduled to run 25-35 minutes ata 9:00 minute pace. How the heck am supposed to do that and keep my HR anywhere near a reasonable zone.
Maybe I need to go back to rebuilding my aerobic base as per Maffetone?

Posted by Rob in Running on January 3rd, 2007 | No Comments