For my understanding the lab test result shows threshhold is at 166BPM while Garmin says 169BPM (Upper Value Zone 4). Zone5 is considered above threshhold. When using your Garmin zones, you should be able to push into Zone 5 (above 166BPM) for the last 5km of your marathon. You may also consider to change the Garmin zone setup from MaxHR to Threshhold HR. This gave me much better Garmin-zones comparing to my lab test.
For most, if you take the time to do a max HR run, Garmin numbers are fine, when using a chest strap. However, as you progress you should do clinical testing. If you are running a local marathon or two, don't worry about it. If you are traveling to race and to podium, you should switch from HR zones to Lac.Threshhold zone training. These are things you will learn as you gain experience, knowledge. Andy Galpin, Peter Attia, Jason Koop and others all have put out data/ information that's easy to find, when you're ready for the next step. Still, if you just run for fun, don't complicate it, just have fun.
That's really interesting. I wouldn't say I swear by what Garmin tells me, but I definitely keep an eye on those numbers. You've made me want to get some formal testing done!
Do you periodically reset your HR zones on your watch to keep it accurate? Frustratingly it does not reset automatically, but everytime you get a notification that your lactate threshold has changed, you need to reset the zones.
It's not that the Garmin is wrong. There are many different approaches to setting up zones (some have 6 or 7 zones) and you're trying to directly compare two differing philosophies and then discredit one. Of course, a lab will always be more accurate than a watch, but I think your Garmin results are pretty good. I expect to run a marathon in the mid-threshold zone but never exceed it. Garmin states that your threshold is 90% which equates to their 169. I've seen from several sources, that the ideal %MaxHR for marathon running is around 87-88%, just below the threshold. For you, that is around 164-165. Your lab test zone isn't giving you much wiggle room if 188 is correct, but their lactate testing should have factored all of this in. Good luck with your marathon! :)
For my understanding the lab test result shows threshhold is at 166BPM while Garmin says 169BPM (Upper Value Zone 4). Zone5 is considered above threshhold. When using your Garmin zones, you should be able to push into Zone 5 (above 166BPM) for the last 5km of your marathon. You may also consider to change the Garmin zone setup from MaxHR to Threshhold HR. This gave me much better Garmin-zones comparing to my lab test.
For most, if you take the time to do a max HR run, Garmin numbers are fine, when using a chest strap. However, as you progress you should do clinical testing. If you are running a local marathon or two, don't worry about it. If you are traveling to race and to podium, you should switch from HR zones to Lac.Threshhold zone training. These are things you will learn as you gain experience, knowledge. Andy Galpin, Peter Attia, Jason Koop and others all have put out data/ information that's easy to find, when you're ready for the next step. Still, if you just run for fun, don't complicate it, just have fun.
That's really interesting. I wouldn't say I swear by what Garmin tells me, but I definitely keep an eye on those numbers. You've made me want to get some formal testing done!
Really depends on what device was used for measuring vo2. not all are equal.
Do you periodically reset your HR zones on your watch to keep it accurate? Frustratingly it does not reset automatically, but everytime you get a notification that your lactate threshold has changed, you need to reset the zones.
What your marathon time expectations
It's not that the Garmin is wrong. There are many different approaches to setting up zones (some have 6 or 7 zones) and you're trying to directly compare two differing philosophies and then discredit one. Of course, a lab will always be more accurate than a watch, but I think your Garmin results are pretty good. I expect to run a marathon in the mid-threshold zone but never exceed it. Garmin states that your threshold is 90% which equates to their 169. I've seen from several sources, that the ideal %MaxHR for marathon running is around 87-88%, just below the threshold. For you, that is around 164-165. Your lab test zone isn't giving you much wiggle room if 188 is correct, but their lactate testing should have factored all of this in. Good luck with your marathon! :)
i think my garmin heart rate zones are bs. this makes me want to get a heart rate monitor