Having returned to regular running the Sunday before last and been rather alarmed by the degree to which my cardiovascular fitness had dimished, I was curious to find out how long it'd take for my heart rate during exercise to return to something sensible rather than the insane averages I was seeing in the high 180s - my heart usually works fast, but these readings were getting ridiculous.
After less than two weeks, I was therefore pleased to see something of an improvement, as the wiggly lines on this graph (courtesy of my nerdy Polar S625X heart rate / SD monitor) indicate:
![[HRM Graph - wiggle, wiggle, wiggle]](http://uffish.net/staticimg/hrm.png)
Sure, the heart rate (that's the top red line) is a little scary, especially when looked at by more experienced runners than myself, but that's an improvement of about 10bpm on the same (somewhat hilly) route a week earlier, when I also ran significantly slower. So that's a reasonably healthy pace and already a beginning of a return to reasonable cardiovascular condition after only about a week and a half, which I tested with my first long run in months yesterday - only 20km, but it went well enough to give me some more confidence.
Let's just hope that the fitness keeps building up as the three races (that's two marathons and a 10-miler) I have entered in October get closer, eh? If they go well, I might decide I've got no alternative but to start fantasising about entering Comrades.
Posted by mpk at August 21, 2005 6:05 PM