Howdy! I’m primarily a cyclist but I nordic ski in the winter for cross training. Normally I wear a COROS watch and a HRM for monitoring nordic ski training, but today is the second time this season I’ve forgotten my watch. When this happens, I pair Strava to my HRM and do my workout. The issue is when I go to look at load and fatigue in intervals.icu.
It doesn’t seem like these are calculating when I use Strava to track my activity. I’m comparing activities with similar HRM and duration and getting different load/fatigue numbers. The only data that looks to be missing in intervals.icu when I record with Strava is cadence.
So my question is two parts. 1 - is there a way to edit an activity to fix this or 2 - is there nothing to do about this and I need to stop forgetting my watch?
What is the Activity Type when it comes from Strava?
Is it Nordic Skying or is it logged as Cardio/Weight training?
If Activity type is the same, post a screenshot of the Summary info , top of Activity Timeline page.
It’s coming from Strava as a Nordic Ski, so the activity type should be the same. Attached are screenshots of the activities. The activity from Dec. 17th is without a watch (recorded on Strava) while the one on Nov. 28 is using a COROS. *I filled in calories as an estimate on the Dec. 17th activity, but that data was not uploaded
The load numbers seem a little low, but I guess they are alright. The biggest concern is the fatigue numbers as those seem fairly low compared to past efforts.
There may be no problem! I could be overthinking this for sure and all could be well. Load just seems slightly low and fatigue seems to be low as well. Load isn’t as concerning as I think you are right, but fatigue seems to not match up. Again, all could be fine and I could be overthinking
Ah… now we’re getting to your main concern which is the fatigue numbers.
Yeah… the calc is not direct and it’s based o the past numbers. (not just the prior day)
the ATLTime Constant is default at 7days (if you click on the fatigue number on the top, it will pop up this)
Also, there’s a way to define the days for the calculation, it defaults to 42 and 7days but for the life of me, I can’t find where it is now. :-0
Ah, got it. Thanks for the explanation! From past skis, I was getting big fatigue numbers which was great. The activity I had an issue with did not give me that which is why I was concerned. But I think it’s due to my HR being lower and skiing in an easier place which also means my HR was less variable. It also came after a rest day. I appreciate the insight into how fatigue is calculated.
So when I’ve gotten large fatigue numbers in the past from nordic skiing, I was at significantly lower load from the prior seven days. Lower fitness score as well. Does that track as I would be adding more fatigue because I had less fitness and fatigue already built up?
Great explanation, thanks for sharing! In the past I haven’t valued Form as much as I probably should, so this is good insight into how to think about those numbers. Thanks!
