Correcting TSS/IF

I recently did an indoor cycling session where the wheel slipping a few times on the turbo so the activity recorded a few fake power spike of several thousand watts, which I didn't realise until I'd uploaded the activity to Garmin Connect. This messed up my FTP, 20 min ave power PR, TSS & IF and presumably my Training Status data. I've now deleted the activity, rejected the PR and done another ride to re-establish my proper FTP, but TSS & IF are still unchanged and in the 12-month graph show a massive spike making the rest of the data is practically flat and meaningless. I'm guessing some of the other data I'm now seeing on GC may also be less obviously skewed with this wrong data.

Does anyone know what I need to do to fix things? I had hoped that deleting the rogue activity might cause a recalculation, but it seems not.

Thanks,

Neil

0 NeilJonesOnline over 6 years ago

To add, using FitFileExplorer (Mac) to look at the original file (which as I mentioned above, I've already deleted from GC) I can see that there are fields for total_training_effect and intensity_factor so clearly these are calculated in the watch at the end of the activity rather than being calculated in GC when the activity is uploaded. I want to try changing these in the .fit file and then re-uploading to GC, but I'm not sure how I can edit them. I've converted the file to csv and opened it in a text editor, but I can't actually find these fields to edit their values.

Anyone able to help?

Neil

0 lj50 over 6 years ago

To be honest the Garmin reporting of TSS is utterly meaningless anyway because they believe it’s correct to report the average TSS activity from a period as the total, rather than ...well, the total. i.e. if you do 5 activities in a day; 4 at 10 and 1 at 20, then Garmin will report your TSS at 12 rather than 60.

Applying Garmin’s logic to sleep; if you slept twice in a day, once for 3 hours and once for 4 hours then you would report that you’d slept that day for 3.5 hours. It’s bloody stupid, but they refuse to change it and so, frankly, I wouldn’t spend any time looking at or worrying about correcting the TSS data in Connect.

0 NeilJonesOnline over 6 years ago

Yeah, I hear you, but:

a) I'm a data junky and an anal one at that, so I HATE when my widgets on GC are screwed up, especially if I'm going to have to live with that for the next 12 months.

b) I've just started trying to rebuild my fitness after 5 months of total inactivity due to an accident, so right now my metrics are more significant and important to me (even allowing for the vagueness of some of them) than just pretty numbers which they tend more to be when changes in my fitness are more incremental.