The entire training status and physical measurements are a big joke. The reason for this is that in most values the fenix use the recovery heartbeat. But that is the most inaccurate value because it is highly dependent on the outside temperature. And the fenix does not use that. Just learn your fenix in a cold period for a first month and then train at high temperatures. The training status will always indicate that you are not productive. Which of course is not true. The problem is that after your workout your heart rate remains high by the heat, but the fenix will recognize this as slaughtering recovery and therefore tired. So for me, all those numbers are worthless.
The entire training status and physical measurements are a big joke. The reason for this is that in most values the fenix use the recovery heartbeat. But that is the most inaccurate value because it is highly dependent on the outside temperature. And the fenix does not use that. Just learn your fenix in a cold period for a first month and then train at high temperatures. The training status will always indicate that you are not productive. Which of course is not true. The problem is that after your workout your heart rate remains high by the heat, but the fenix will recognize this as slaughtering recovery and therefore tired. So for me, all those numbers are worthless.
Garmin uses Firstbeat algorithm to evaluate your Training status and, there are tons of white papers on their site explaining how they evaluate your physical measurements. If i remember well they don't use recovery HR, but for sure HRV (Heart Rate Variability).
BTW if the outside temperature is high (or any other external condition like humidity) your training status is obviously worse, isn't it?
As noted above, the algorithm uses heart rate VARIABILITY, not recovery heart rate. VO2 Max and Training Status are available almost immediately after ending a run, before the watch would have had a chance to measure heart rate recovery.
If it's just one or two hot runs (eg. while travelling), perhaps log these as "Trail Runs". Runs logged this way do not count towards your VO2Max calculations, but they still count towards training load.
If you are going to be doing a series of hot runs, then it may be wise to log them in the normal way, as the heat has affected your running performance.
