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Nov 2017
11:29am, 17 Nov 2017
5,120 posts
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chunkywizard
I'm using a 935 so it's the second generation of the optical sensor. I haven't run in less than 5 degrees with it but all is good so far. I'll keep an eye on it though. Optical is definitely affected by cold when your veins contract. Luckily I have skinny wrists which I think helps.
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Nov 2017
1:09pm, 17 Nov 2017
33,800 posts
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Hills of Death (HOD)
It seemed ok yesterday wore it a bit tighter
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Nov 2017
9:54am, 28 Nov 2017
18,891 posts
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Doc Moye
hello folks......never been on this thread, but i see lots of familiar faces. I used to use my HRM all the time but after a chaffing incident its been on a break. I used to just look at my HR data and go oh thats interesting but thought its time to make better use of it! So ive set my proper resting heart rate and max heart rate (based on an interval session used for that purpose) and am now ready for any tips and wisdom that you care to pass on. tomorrow will be an easy run and thurs a long easy run and sunday intervals. no park run/tempo this week.
todays easy run was almost entirely in zone 2.......previously i would have thought that was just not trying hard enough, but maybe that's what an easy run should be???
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Nov 2017
9:56am, 28 Nov 2017
32,028 posts
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GlennR
That’s exactly what an easy run should be.
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Nov 2017
10:07am, 28 Nov 2017
17,337 posts
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flanker
I struggle to get easy runs out of zone 1!
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Nov 2017
10:30am, 28 Nov 2017
32,033 posts
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GlennR
That’s because you’re old and knackered. 
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Nov 2017
10:44am, 28 Nov 2017
11,973 posts
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Chrisull
Doc - broadly speaking Zone 2 is endurance, zone 3 is cardiac (zone 4 anaerobic, zone 5 max, and zone 1 is "recovery" for want of a better word). So yes easy run in zone 2 is perfect. I wouldn't be scared of tipping over into zone 3 at times during the run - it doesn't ruin the run, but it is no longer an easy run then (even if it feels easy), so be careful of the amount of time spent in zone 3 on an easy run.
I know there are several here who can do zone 1 for their entire runs, but for me that's walk pace (or a slow jog on a downhill I can get below 122 (my border between zones 1 and 2) to 118 at lowest and that's with over a year of vastly improving downward trend (since I've started walking 2 miles a day, that has made a notable difference) - if I continue to decrease then over the next 2 years I might be able to spend say 75-80% of the time in zone 1.
I don't mind walking but a walk is a walk, a run - and even at walk pace, is still a run, and if you stop to walk hills (a power walk up a hill is zone 2 for me) I find you are training your brain to walk hills. It's like all the marathon runners who say to me, when I ran 26 miles it wasn't like the 23 mile training run - and that's because they stopped every 3-4 miles! No criticism of them, but that's the way they've trained and it's a shock then to continuously run the miles instead.
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Nov 2017
11:27am, 28 Nov 2017
870 posts
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J2R
How are you defining your zones there, Chrisull? I tend to use a working heart rate (Karvonen) formula, which takes one's resting heart rate into account. By that method, the top of zone 1 for me is around 124bpm and I have no trouble keeping below that for 8:30 pace and slower (except off-road, which pushes it up a little). But using absolute max heart rate, top of zone 1 is 105, and that means running at something like 11 minute miles (which I often do, but it's much slower than my normal easy run pace).
I agree that people shouldn't be worried about occasionally going into the higher zone, as long as the vast majority of time is spent in the right zone. It seems to be spending a lot of time in too high a zone which is the problem, not the occasional transgression.
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Nov 2017
12:59pm, 28 Nov 2017
18,892 posts
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Doc Moye
thanks...thats easy run covered!
for my intervals i assume im pushing through zone 4 and dippping back to zone 2 for the recovery between. And zone 3 is a no mans land that i dont want to be spending time in
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Nov 2017
1:15pm, 28 Nov 2017
601 posts
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Brunski
Just out of interest are we talking % of max when talking about these zones in this thread?
•Heart rate zone 1: 50–60% of HRmax.
•Heart rate zone 2: 60–70% of HRmax.
•Heart rate zone 3: 70–80% of HRmax.
•Heart rate zone 4: 80–90% of HRmax.
•Heart rate zone 5: 90–100% of HRmax.
Or is it the WHR where you deduct your RHR from your MHR, do the calc and then add back in your RHR?
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