I no longer get any Training Effect (shows 0.1/0.0) while mountain biking with HR monitor. I don’t use a power meter for MTB, but do for Road cycling. I used to get TE for MTB (presumably based on HR data), so not sure what the issue is. Haven’t changed HR strap (HRM Pro+) and HR data is showing correctly on the unit and in Connect. HR zones in connect are good as well.