I notice that intervals.icu shows different load than Garmin. I did a workout today and intervals.icu shows load of 78 while Garmin 118. My feeling is that Garmin is off because the workout was just over an hour with 4x10 min intervals just below treshold. I definitely didn’t feel like I did an hour of FTP. Still does anyone know why are the two numbers different.
Here are the screen shots.
I mean, Garmin’s load comes from the Epoc value and Intervals calculates your load from other values. There is already a post about this in the forum, but unfortunately I can’t find it.
The answer is in your own screenshot 
Garmin uses its own proprietary ‘exercise load’ number based on epoc but also displays the more widely used TSS:
Thank you so much guys.
Is Load in intervals the same as TSS?
Just starting to look at these numbers but couldn’t find TSS anywhere in the activities. My search lead me here……
Yes… TSS is trademarked
Thanks. I think I might have worked that out once before but forgotten. I suppose it may still breech TM if the note says ‘Load is almost identical to TSS’?
Why is my “intervals” training load so much higher than my “TSS” as quoted by Garmin?
Is that because garmin is giving me credit for a higher FTP?
Aren’t TSS and training load sort of the same thing?
That would be an explanation. Two people can have the same load number, same goes for intensity, but have very different power outputs because that exercise’s load is determined relative to that persons abilities, FTP.
no…
that doesn’t work - if two riders have different FTPs and ride the same course in the same time they can’t have the same load unless I am completely lost on how this whole thing works.
Can you please show us screenshots of what you mean by ‘very different’?
If you compare TSS (NOT Exercise Load) from Garmin with Training Load from Intervals (which is also TSS but named otherwise because of trademark limitations), and FTP on both sites is the same, the load should show a very similar number (maybe a couple points off max).
BUT, you need to be sure that Intervals is calculating Load based on Power and not on HR. Load from HR can be very different, especially if your zones for HR and Power aren’t matching.
So check:
so to my point then, Garmin is constantly updating my FTP (incorrectly, I think) and unless I’m pushing that through to Intervals, that is likely causing the disconnect.
one of the reasons I can’t stand Garmin/Strava/whatever is they refuse to show their math.
AFAIK, Garmin signals a new detected FTP, but you can choose to not accept it. That is, right after your ride on your device.
no that’s right, it does - fair enough - I just can’t see much of anything so I just keep hitting the checkmark until its done. The amount of post ride info they try to throw at you on that tiny little device is kind of insane.
In Garmin Connect website, click top right on Devices and synchronisation, then on your device. A new page will open with Device Settings and User Settings.
In the User Settings page, you can set your HR and Power zones, Threshold HR and Power, etc…
Set your FTP to what you believe is correct and don’t accept changes anymore if your device proposes them. Or, if you missed it, modify again on this page to keep both Garmin and Intervals synched.
Sorry to bump this thread again.
I have been trying our TrainingPeaks but am very keen on using intervals.icu instead.
Two screenshots show a few completed workouts in TP and intervals.
How come they differ?
I am a runner although i play some icehockey and floorball.
My thresholds are set the same.
My understanding is that load should be more or less the exact same thing as TSS so I should not expect more than a rounding error.
Below is my zones settings. I have read as best I could here on the forum and elsewhere but perhaps someone can help me understand why there is a difference.
I could imagine that there are differences in the calculated graded pace (GAP). Intervals uses the Strava model for this, TP probably uses its own.
Is the GAP the same or is it different?
Thank you for answering so quickly.
I messed around and recalculated the workouts with GAP models and other settings. There was some effect on load for the depicted workouts but stilla far ways off the tss from TP.
All my data is collected with a garmin FR55 and a cheststrap.
the data arrives to intervals via garmin connect. It should make no difference if it comes through strava right?
far as I know, strava will strip out some stuffs like privacy circles (so your laps data will be a bit wrong) and I’m not sure if it strips out the entire data Within your privacy circle.
But it will also strip out LR Balance and CIQ data fields.
