I to get confused with this LT testing to set up zones. I did a 30 min ride on a fire road going uphill like the mountain bikers training bible said to do. My average heart rate was 178. On my last 3 XC races it was around 178 with a max HR of 184. I know there is no way I am able to be doing 96-97% of max heart rate which is what it comes to. Just wanted some help so I could get my zones figured out and set them for training properly.