Heart rate

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Canute
Canute
Oct 2018
4:42pm, 15 Oct 2018
1,897 posts
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Canute
J2R, many apps compute HRV data but do not provide the ability to output the R-R trace. If you want to measure HRV, that might not be a problem.

My post on 13th Oct (post 1895) was about the potential utility of frequent VEB’s during cool-down for identifying increased irritability of cardiac muscle, and perhaps for detecting risk of (rare but potentially fatal) ventricular fibrillation.

Nonetheless, I did also record HRV when I was training intensely, for the purpose of detecting over-training. However the utility of HRV for this purpose is debateable, because it is influenced by many different factors related to stress. My conclusion was that HRV alone was not a good indicator of over-training. However, the combination of high frequency HRV at rest, resting pulse rate and subjective sense of well-being was useful. In fact subjective sense of being run-down is probably the most sensitive indicator of over-training. Our brains are actually pretty good at weighing all the various signals from our bodies, but subjective sensation alone is not as trustworthy. My policy was to weigh up all the relevant information. If I felt run-down and either resting HR was elevated, or resting HRV, had changed expectedly, I cut back by my training load for a few days. However, that approach is only useful if you record resting HR and HRV regularly.
J2R
J2R
Oct 2018
5:01pm, 15 Oct 2018
1,428 posts
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J2R
Interesting point about using HRV there, which tallies with my own experience.

As regards the output of an R-R trace, it appears that I was mistaken in thinking that EliteHRV allows this, although I have definitely seen apps which do. This one seems to do so for iPhones: itunes.apple.com
Canute
Canute
Oct 2018
6:56pm, 15 Oct 2018
1,898 posts
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Canute
F2R
I agree, it appears that the I-phone HRV logger does allow the export of data. If this is the complete record of the times of all the R waves, that would be useful.
flanker
flanker
Oct 2018
1:03am, 16 Oct 2018
17,906 posts
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flanker
Happy - all the Garmin Fenix range from at least the 3 support recording HRV. I suspect the rest of their high-end models can too. Many logs can extract and display the data.

I track mine as an indicator of stress (be it from over training or life in general) and while there is little hard evidence about what absolute levels are good or bad, it does seem to be a reasonable relative pointer and therefore useful.
Badger
Badger
Oct 2018
8:07am, 16 Oct 2018
9,909 posts
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Badger
Just to amplify that a little bit; top-end Garmins have been able to record HRV for many years, but it's only been possible to switch it on via the menus for a few years (the models flanker mentioned, pretty much). It used to be that the Garmin-approved reason for turning it on was to use the files with Firstbeat Athlete or Firstbeat Sports, and that software could turn HRV on by sending a file to the watch.

Receiving and recording are different questions; watches with Firstbeat software embedded (again, all the high end watches back until at least the 310xt) use the R-R intervals as input to that software, they just don't record them to the FIT file.
Chrisull
Chrisull
Oct 2018
8:24am, 16 Oct 2018
13,363 posts
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Chrisull
I think mine (Vivoactive 3) must have HRV ability as it issues a daily stress rating, and this goes up the day after a particularly long or hard run (regardless of stress).
larkim
larkim
Oct 2018
8:26am, 16 Oct 2018
5,845 posts
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larkim
Isn't the VA3 stress score just one of those TRIMP things Chris? Without knowing the find the scenes stuff it could be either TRIMP or HRV I suppose.
Chrisull
Chrisull
Oct 2018
8:29am, 16 Oct 2018
13,365 posts
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Chrisull
I'd recalled it was HRV, but you could be correct.
Chrisull
Chrisull
Oct 2018
8:30am, 16 Oct 2018
13,366 posts
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Chrisull
HRV it seems to be: www8.garmin.com
larkim
larkim
Oct 2018
8:39am, 16 Oct 2018
5,846 posts
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larkim
Hmm, another reason why perhaps I should think about a treat for Xmas...

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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