Heart rate
298 watchers
Apr 2017
10:55am, 27 Apr 2017
435 posts
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J2R
SPR: "why did you think setting off faster then you were aiming for was a good idea?" - ha, good question! It's not something I usually do, particularly not in longer races where my pacing has in the past generally been pretty good. But occasionally, for whatever reason, I don't know just what my level of fitness is and what I'm capable of, and I have a go at the ambitious end of the spectrum, on a 'nothing ventured, nothing gained' basis. In general, when I've got my fastest times in shorter races it's been when I've gone against my normal conservative race strategy and gone out at a faster pace than normal and just about held on. Because of the nature of my training this year, with a greater base building phase than I've done before, with higher mileage, I wondered whether I might be capable of a good PB time. The first mile, in 5:35, felt pretty easy, which encouraged me to press on. But I was deluding myself, as it turned out, and mile 3 into a headwind with nobody in front of me as a wind-break put paid to my target. I don't regret having a go, though, and it wasn't a key race. I clearly need to work more on my stamina - I'm thinking 1-2km reps at 10K pace, once my calf is OK again. |
Apr 2017
11:04am, 27 Apr 2017
10,880 posts
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Chrisull
It has *some* backing in sports science, in that it takes one - two miles for HR to get up to pace, and so you can run them slightly faster and not hurt your overall effort, some sport scientists have said. Haven't got a link sorry.
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Apr 2017
11:36am, 27 Apr 2017
437 posts
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J2R
I've read similar before, Chrisull. The other factor last night was that because we started off directly into a headwind for the first 1.3 miles, I wanted to be in a group, and I ended up going with a clump of the fast boys. Did provide shelter, but probably at a cost of going a little too fast. And they'd all cleared off by the time I did my second lap  Interesting from a heart rate point of view - my average HR was 2 bpm higher last night than the same race last year, when I was 13 seconds faster. Don't know what this signifies. But maybe the headwind was the deciding factor, as it was much stiller last year. |
Apr 2017
12:04pm, 27 Apr 2017
12,082 posts
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Fenland (Fenners) Runner
I've never run well going out fast at any distance from 400 metres to 50+ miles.
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Apr 2017
12:34pm, 27 Apr 2017
439 posts
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J2R
Actually, looking back I see that my first mile last night was only 2 seconds faster than when I ran my course PB, so maybe it wasn't going out fast which did for me, so much as the wind. Nonetheless next time I'll probably hold back a little and keep more in reserve, like I used to do when I was younger and more sensible
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Apr 2017
1:00pm, 27 Apr 2017
23,956 posts
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SPR
"It has *some* backing in sports science, in that it takes one - two miles for HR to get up to pace, and so you can run them slightly faster and not hurt your overall effort, some sport scientists have said. Haven't got a link sorry." Not sure your conclusion is correct based on the HR lag. The anaerobic system is the quickest system to fire up, so the faster you go, the longer it takes the aerobic system to catch up but using your anaerobic system too quickly will mean your pace will be limited to what the aerobic system can provide later on. This is different from a fast first min which is provided by the creatine phosphate system. |
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Apr 2017
1:09pm, 27 Apr 2017
23,957 posts
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SPR
In regards to your race J2R, given the lack of speed work, I'd have thought the beat strategy would be to not have pace varying too much so that you use as little anaerobic system as possible for the distance and pace as aerobic conditioning would be your strength currently. Chris - HR lag is one of the reasons cyclists like power. |
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Apr 2017
1:15pm, 27 Apr 2017
440 posts
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J2R
SPR, it was not my intention to have pace varying too much. I wanted all my miles to be as fast as my first one, and thought I might, just might, be able to to it! Interesting observation about aerobic/anaerobic blend. If my calf is OK for doing a 10K on Sunday I'll be a little more circumspect at the start and make more use of aerobic conditioning. It's a fast course, so would be optimistic of a good time, but it's going to be very windy again.
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May 2017
8:32pm, 14 May 2017
500 posts
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J2R
Rather peculiar heart rate incident yesterday which I cannot easily explain. For the first time ever, I ran a track 1 mile race (which I did in a time I was happy with, 5:17). It felt unbelievably tough overall, albeit over quickly. At the end I felt as if my heart must be about to give out. Looking back at the heart rate graph, though, I find to my surprise that the highest HR was 166 (my HRmax is probably 176-177) at about a third of a mile, and after that it slowly went DOWN, to around 160 by the finish. What could be happening here? A much more typical race was today, a 5000 metre track race, where my HR steadily climbed to 171 by the end. |
May 2017
6:14am, 17 May 2017
31,415 posts
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Nellers
My guess would be that your legs weren't able to sustain the effort level and started screaming so you sub-consciously eased off slightly. What did your pace do over each lap?
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