The Fenix 5/s/x and 935 have a Training Load widget as part of the FirstBeat 2.0 metrics.
I was wondering whether it is possible to build one for the Fenix 3 and other older devices.
A full Connect IQ implementation of the FirstBeat 2.0 metrics might comprise:
- a TRIMP data field (such as this one)
- an EPOC data field
- ananaerobic training effect data field
- a Training Load widget (displaying Garmin EPOC for example)
- a Training Status widget (implementing this)
From the Fenix 5 there is this equation:
Garmin EPOC (GEPOC™) = (AV HR * Total Time + TRIMP + EPOC peak) / 3.
There are some details here about the Banister and Busso human performance models.
