hohenfelsvol
How uwe doo-in?!?
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I've read it a few times in Triathlon and Running magazines. The thought is the longer you can keep your heart rate below threshold the higher rate of speed you can hold.
For example, lets say I run for 20 minutes and then my hr starts to go past my threshold. If I continue running my hr will stay elevated. I'm on a downward track and will progressively run slower. But if I run for 20 minutes and then walk for a minute, it allows me to recover and then I can run close to my original pace for another 15-20 minutes. The fact that I'm able to keep a faster pace longer offsets the little time I lose walking. Plus your body learns to work at that threshold level for a longer period of time.
On flat courses, I adjust my pace from running to maybe a jog to get my hr lower. On hilly courses, (which is what I mostly run) I use the hills as a break since you don't gain much slowly running up a hill vs. a brisk walk.
On shorter runs I push myself with repeats or fartleks, to increase my threshold.
Makes sense. Heart rate too high too long doesn't help. Thanks.