Heart rate

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Jun 2022
6:48pm, 11 Jun 2022
14,269 posts
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chunkywizard
My Lactate threshold is around 91/92% of MHR. At my best 5K of the year I managed 7 mins above lactate threshold and that was all I had. I wouldnโ€™t think you could keep it going for very long.
Jun 2022
6:55pm, 11 Jun 2022
2,048 posts
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Brunski
You should be able to race for around an hour at LT pace, just over 10 miles in my case. So for me 10k is a bit over LT, HM is a tad under (for the majority). Basically the more you go over that threshold, the sooner you'll fatigue (heavy legs) as you're producing Lactate quicker than you can clear/use it.

Training in chunks at/around threshold can bring about improvements, such as 20-25 mins continuous, 2 x 15 mins, 3 x 10-12 mins etc. but then there's others who prefer to polarise training and run easy for most and above Threshold for the rest.

Plenty ways to train, mess around a bit until you find what works for you.
Jun 2022
7:11pm, 11 Jun 2022
1,509 posts
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Bowman ๐Ÿ‡ธ๐Ÿ‡ช
Ok, thanks guys, Iโ€™ll keep trying out some different stuff to be able to home in on my โ€œlimitsโ€.
Jun 2022
7:22pm, 11 Jun 2022
1,510 posts
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Bowman ๐Ÿ‡ธ๐Ÿ‡ช
When I look at my fast 10k today I think my actual MHR is above 192 as I suspected.
Cus for 75% of the time I was at 95% of MHR and that seems high right?

Well Iโ€™ll keep looking in to this.
Will try to conduct a lactate test with the watch to, Matt Fitzgerald wrote that that one is pretty good, but the automatic detection is not so good.
Jun 2022
7:51pm, 11 Jun 2022
25,453 posts
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Dvorak
There have been Fetchies who could race consistently at 92/93% AHR, which would probably be around 95% MHR? Afaik they also had pretty low resting heart rates. And were at a level of taking prizes at local level. They were, needless to say, very well trained.

Though you are doing well, Bowman, I suspect your actual MHR might be a few beats above the figure you are using.
Jun 2022
8:00pm, 11 Jun 2022
1,511 posts
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Bowman ๐Ÿ‡ธ๐Ÿ‡ช
Yes sounds right, Iโ€™m not an elite by any means ๐Ÿ˜‚
My resting HR is hitting low 40ies, but about 48-49 on an average lately. So not extraordinary RHR either :)
Well I keep looking for my MHR and LTH.
Thanks Dvorak!
Jun 2022
9:24am, 15 Jun 2022
18,061 posts
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larkim
Blimey, heat and heart rate!

I've had a couple of weeks of decent stress at work and zero training, but last night did some intervals. When splitting down the pace into 250m chunks (just to get a sense of HR) a couple of the 60 or so seconds had HR at what I've previously estimated as being my max - 178avg, with lowest 177 and highest 179 in those minutes.

I knew I was working hard (especially for the slow pace I was hitting) but a double whammy of heat and poor fitness really shows! Can "max" push itself further if driven there by heat? Or would the consensus be that my previous evaluation of max (based on a hill sprints session) was a bit soft?

Based on the readouts I do trust the numbers.
Jun 2022
9:25am, 15 Jun 2022
22,834 posts
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Bazoaxe
I am on holiday in the heat and didnโ€™t bring my hr strap so using the optical instead. My hr readings are much lower than I would expect.
Jun 2022
9:32am, 15 Jun 2022
734 posts
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Shades
larkim - it's a shock when the weather warms up quickly as to how it affects HR stats.

As far as I know your max is your max and can't be pushed up. Sounds like your previous estimate was a bit conservative. Heat and lack of fitness is a perfect time to do a MHR test as easier to get close to max rather than when you're fitter.
Jun 2022
9:49am, 15 Jun 2022
2,049 posts
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Brunski
Pretty much agree word for word with Shades here. My highest reading that I trust was a June evening where I effectively raced a long slightly downhill segment in a group (after running hard up a number of hills). It was a hot evening, I wasn't very fit, and I was pretty much gasping for oxygen afterwards.

On Monday I probably ran just as fast but am much fitter now and the maximum I got to was 9 beats lower.

About This Thread

Maintained by Elderberry
Everything you need to know about training with a heart rate monitor. Remember the motto "I can maintain a fast pace over the race distance because I am an Endurance God". Mind the trap door....

Gobi lurks here, but for his advice you must first speak his name. Ask and you shall receive.

A quote:

"The area between the top of the aerobic threshold and anaerobic threshold is somewhat of a no mans land of fitness. It is a mix of aerobic and anaerobic states. For the amount of effort the athlete puts forth, not a whole lot of fitness is produced. It does not train the aerobic or anaerobic energy system to a high degree. This area does have its place in training; it is just not in base season. Unfortunately this area is where I find a lot of athletes spending the majority of their seasons, which retards aerobic development. The athletes heart rate shoots up to this zone with little power or speed being produced when it gets there." Matt Russ, US International Coach

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