There is not.

However, if you only ever train at high intensity then you can expect your fitness to decrease so it's no surprise that your watch is telling you you are overtrained.. That said, it's a bit more complicated to explain why your VO2max is decreasing but no surprises really.

Start here for some reading so that you can get a better understanding - https://en.wikipedia.org/wiki/Overtraining

Actually, it's the other way around. Your Overtraining status is due to your VO2Max going down.

I'm not sure how you "know what the watch tells you is not correct".

You can Pause Training Status if you want. But this is just hiding the problem, not addressing it.

A training plan made exclusively of high intensity training is probably not a well constructed one, but I am probably not going to convince you of that here. 

i fully agre. The trainingstatus is helping me to give me the good balance in the training variation.

MarinusvD said:

The trainingstatus is helping me to give me the good balance in the training variation.

mcalista said:

I'm not sure how you "know what the watch tells you is not correct".

You can Pause Training Status if you want. But this is just hiding the problem, not addressing it.

I'm going to disagree with both of you here.  And now that I got the rolling eyes, just hear me out.  Here's how Garmin defines Training Status:

What Is the Training Status Feature on My Garmin Fitness Device?

I intentionally underlined what I find to be misleading.  I can trail run, swim, run on a treadmill, do a HIIT cardio workout like the Insanity program, use and elliptical or rowing machine, weight train, do TRX workouts, etc.  These are all workouts that compliment a well rounded fitness program, but because I didn't run outdoors or cycle with a power meter my training status will go from productive or maintaining to unproductive because Garmin decided training status is based on exercises they use to calculate VO2Max.  I'm not saying the VO2Max metric isn't important, but let's call it what it actually is.  Either "running VO2Max training status" or "cycling VO2Max training status", but it's not a true or correct measurement of one's overall "training status" by definition.

I believe a better picture of one's true training status comes from how Garmin determines training effect.  

What Is the Training Effect Feature on My Garmin Device?

You can clearly have a well balanced training program (load) without the need run or cycle with a power meter.  Michael Phelps has a diet and 10 week training program to use prior to competition you can download online.  It's a very extensive program that consist of swimming (duh) and weight training.  As it stands now, arguably the world's most accomplished Olympian would be unproductive according to Garmin. 

tess said:

because Garmin decided training status is based on exercises they use to calculate VO2Max

because that's where the empirical data lies that allows for estimations to be derived for us mere mortals. Nothing to do with what Garmin/Firstbeat decide. Simply where the most research data exists.

Professional athletes have access to a greater range of test and measuring tools that they use to calculate (if they do) their individual training loads.

Dr Phil said:

because that's where the empirical data lies that allows for estimations to be derived for us mere mortals

I'm aware that professional athletes have a far superior range of tools available to them and what the limitations are of my watch, but that's one more reason to call it what it is.  If our watches only have the means to derive VO2Max from running or cycling, then call it running or cycling VO2Max training status.  Have a separate metric such as the info obtained from training effect to give you a training status for all other activities. 

TRIMP is an alternative that could be used - https://www.oxfordreference.com/view/10.1093/oi/authority.20110803105725580

Yes.  There was a datafield I used with my 935 that did exactly this.  I don't believe it's been made available for the 945, but I'll try contacting the developer or try sideloading it.  I don't believe Garmin will make any changes and I completely understand why, so this may be my best alternative.  It's just so unmotivating getting a bogus training status level (even if it is an estimation and recommendation) that I've turned off (paused) training status and removed the widget from my watch.

I can no longer find that datafield in the IQ store.  The few that come up when doing a search for TRIMP don't seem very promising either. Perfect!  :) 

As far as I understand it neither Training Effect nor TRIMP try to ascertain the actual success of the training by using some kind of performance as a counter to the training load. I think that's what the Training Status tries to do if it has a means to measure it. It looks at the performance in the form of VO2Max estimate by looking at HR and power (cycling) or pace (road running) and put that in perspective to the load it has observed to find out if you actually are improving as a result of your training, going faster with the same HR for example.

But none of this has anything to do with the original question. If someone were to do only high intensity road running outdoors or cycling with a power meter and the actual VO2Max estimate went down while load went up, the watch would be right to call this unproductive or overtraining since it most likely is. They are getting worse while training. No one wants that and that's what Garmin tries to prevent here even if not at all perfectly.