Between Thresholds Podcast

BETWEEN THRESHOLDS - Episode 10 | Lactate is not bad, just misunderstood


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Episode 10 of the podcast Between Thresholds is now available. It was actually available yesterday, but there was no time to publish the entry with the episode notes.

This episode has been dedicated, of course, to answering the questions you have sent us. And we have also talked about lactate, something we promised in the previous episode but that we did not have time to include at the time.

The first question I answer is from Paco, regarding the use of Zwift on a treadmill and the possibilities of using a device that is compatible with both Zwift and his watch, a Garmin (without specifying the model).

Well, it all depends on where Zwift is used and what model of Garmin we are talking about. Still, as a review for everyone...

The first thing to determine is where you are going to use it. First determine where you use it. If it is on a computer, tablet, cell phone, etc. Normally it will be directly compatible with Bluetooth, so that would be the ideal option. Depending on the case, it may even be the only option (iPad, Apple TV, etc.). If it is a computer, 1TP10We could use an ANT+ adapter, but it would be an additional expense.

Once we know what connectivity we need for the device where we have installed Zwift we have to see what our watch allows. In the case of Garmin, the latest models do have support for ANT+ and Bluetooth, but the older models only ANT+. Both Polar and Suunto, except for very old models, have support for Bluetooth sensors.

From there you have to look at the possibilities... if you use an iPad and your watch does not support Bluetooth sensors then you have a problem. If your Garmin is old and you use a PC, you will need an ANT+ adapter. 

Currently there is only one "pod" that supports both ANT+ and Bluetooth, which is Stryd. But is about 230€. and stands out mainly because it is a potentiometer, rather than a footpod itself.

Bluetooth options:


ANT+ options:

  • Footpod of Garmin or Suunto, ANT+ and more difficult to find as they are discontinued.

That would be option A. There is an option B in case you have a FR245, FR945 or Fenix 6which is to use Virtual Run. This is a specific mode that allows you to transmit heart rate and cadence data via Bluetooth.

However, Paco wants to record the data on the Garmin. In this mode only data is transmitted, but the clock does not record anything. But hey, there is the option for others.

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Finally we would have option C, which is to attach a sensor to the tape. It would be the NPE RunnThe advantage is that if there are several users at home for the belt, all 1TP10 will use it without having to calibrate anything. The advantage is that if there are several users at home for the treadmill, they will all podran use it without having to calibrate anything. With cadence sensors you have to enter the stride length data or let it calculate automatically, but you don't 1TP10We can pass the sensor from one person to another without any further action on our part.


Segor asked us about data fields in cycling. We said something about it in Episode 9, but I really don't know what I was referring to. Anyway, here is my cycling screen setup, which is what I discuss in the podcast.

This is my usual display for any outing or basic training.

Garmin Edge 1030 Plus - Profile Synchronization

And this is the one I use when I'm doing a series training.

Customized data display for intervals

And finally, I leave you the one I have configured for competition profiles, much more focused on power data (which in the end is what worries me most in a race).

BETWEEN THRESHOLDS - Episode 10 | Lactate is not bad, just misunderstood 1

José Manuel also has his own, so listen to him on the podcast.


Finally, we solve the "mystery of the faces" in the Garmin training. Both Rodrigo and other listeners have told us about it after the last episode, so we solve it for everyone (you always learn something new, so do we).

These smilies only appear if you have activated an adaptive training plan offered by Garmin Coach.

It is a free training platform that allows you to choose a target distance, to perform in a given time. Once you have selected your goal, Garmin Coach will ask you which days you want to train and you can even choose one to be the day of the long run.

Once the training is created it is not something totally fixed that you have to stick to, Garmin Coach will modify the training plan to suit you. 

If one day you have not trained as you should, this will be taken into account in the training sessions of the following days, adapting them to these changes.

They are available for 5K, 10K and half marathon. These are the "smart" ones, then there are the traditional ones that are available for longer distances, but they don't have that adaptive factor. 

I had never seen it because my workouts are coach-guided, so even though I know all the details of Garmin Coach I have never used it. Also, what I practice mainly is triathlon, for which there is no adaptive plan.

In short, this system of faces is only present in the adaptive plans and will serve precisely for that purpose, depending on the sensation that we report, so will be our next training sessions.


This is in terms of answering your questions (that 1TP10You can send us through the following form). The part "gorda"Did you know that it is not as bad as it was always believed? And far from not being bad... it turns out to be good. It simply makes an appearance at the most inopportune moment, and that's why until not so long ago it was blamed for all the ills of the runner.


Where can you listen to it? Well, on the usual platforms, you can choose your favorite:

Or from here, at the bottom of the page.

Do you have a specific podcast topic you'd like us to cover? Do you have a training or watch question you'd like to discuss? Enter the podcast page and you will find a form from which you can podrás send us a message with whatever you want.

Send us your comments, we appreciate all your criticism to improve and offer you what you are looking for. Leave us your comments on the platform you use to listen to us!and don't forget to send your rating!

If you rate us with 5 stars more 1TP10 people will be able to discover it, because the platforms will put it above in its corresponding section.

Thank you!

Eduardo Mateos

I've been surrounded by electronic devices of all kinds for more than 25 years. Using them, testing them, taking them apart and dissecting them. Long distance triathlete: I swim, run and cycle for a long time. Maybe too much.

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  1. First of all thank you for this series of podcast, the truth is that they have been very enriching and help us to better understand various topics related to our different sports. (I particularly like to go running, swim in the pool and play tennis).

    With this last Podcast, 2 specific doubts have arisen in my mind:
    - They have talked about how to calculate the lactate threshold (I have used for some time to calculate it, the watch itself, from the Fénix 5, until now the Fénix 6 Pro, both in the specific test that brings the device, as when it detects it automatically after each activity) With this and what was commented in the podcast, the topic of how to get it, either in running or cycling is touched.
    My question is how to obtain the lactate threshold in swimming?

    -My second Doubt; I always used to use (or had the setup) when running, the percentage based HR zones (%) of the FCMax.
    I.e.; Z1= 50%-60%, Z2= 60%-70%, Z3= 70%-80% etc.
    After listening to the podcast and following its recommendations I have set it to Lactate Threshold Percentages (%ULFC), because I understood that this way it is more personalized and better. My question is: Am I right?

    One last doubt, I always listen to the podcast on spotify platform, but I have not podido find how or where to rate them, if you can? and if so where or how? to put their respective 5 Stars !!!!

    Thank you very much Amigos, from Leon Guanajuato, Mexico!

    1. Hello Sergio. First of all, thank you very much. Regarding your questions.

      1- The first thing would be the critical swim speed. The new Garmin watches include the option to do this directly, although you can do the test at any time and use a calculator. In the presentation of the Garmin Swim 2 you have more details.

      2- Yes, the way you have used now is better, because the threshold is easier to obtain than the maximum HR.

      3- In Spotify there are not, at the moment, ratings to the podcast, for the moment you can only do it in iVoox or Apple Podcast. Anyway... thanks!

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