CalicoCat said:The former. Your LT the power output that you can sustain for about an hour, but then have pretty much nothing left. To test to get your LT, you can do a one hour time trial, but a lot of people use their "20min number" (power output sustainable for 20min) and calculate their LT to be about 95% of that number.
Good luck with your training! I'm sure you'll be hanging with the group in no time :-) But I would suggest thinking about what happens when you lose contact with the group. Is it when there is a surge, or an acceleration from a stop light or a corner? Climbing? Or do you just start to fatigue toward the end of the ride and can't even hold a steady pace? Depending on what your weakness is, you can target your training to work on it.
Additionally there are group riding habits that you might be able to perfect that will help you keep up:
1. Stay close to the front. This will reduce the "accordion effect going in/out of corners. It will also give you room to drift back on a climb, but not lose contact with the group.
2. If you find yourself too far back, don't waste a lot of energy trying to move up on the outside. Just wait for a stop light and gently move forward while waiting for the light to change.
3. Don't brake a lot while cruising, you will just be wasting the energy that you used to get up to speed in the first place, and then have to use more energy to get back up to speed.
4. Protect yourself from the wind by riding as close as possible to the rider ahead of/next to you.
5. Drop a couple of gears before coming to a complete stop. The gears you use for cruising will be very difficult to turn from a stop and it'll take too long to get up to speed.
You might have already known these things, but thinking about them again never hurts!!!!
I guess I'm going to have to hit a indoor trainer someday so that I can test out this LT calculation.
Now that you brought it up about when I notice that I lose the group, I figure I would just explain it to you. I usually always lose the group on long hill climbs and also when we're in line coasting down a flat area, I seem to also have trouble keeping up with the group when there is a short, small hill, which flattens out, where you need to exert a little extra power to get you over the hill while maintaining speed. The guys that I ride with are able to get more riding time in during the week than I can cause one of them rides to work everyday and the other doesn't work, so he pretty much cycles everyday, but I just feel like I should be able to push myself some more. The one guy that rides to work, he's about my height 5'-10" & 190 lbs (I'm 5'-10" & 170 lbs) and he climbs like an animal. He also holds the front of the group when in line for a pretty long time at 25+ mph where as I can maybe hold at around 22 - 23 mph and for a shorter time before I have to peel off the front and get to the back to recover.
Not sure if that is enough information for you to evaluate, but that's all I can really explain unless you have any other questions that I can maybe answer.
To me, from the research that I've done, it seems that I reach my LT before the other guys, which makes me fall back sooner on the hills and also when riding the front of the group. I've read that doing about 8 min intervals @ over 100% LT with 2 - 3 min recovery helps a lot. The only problem with training in the area that I live, there isn't really any stretch of road where I can do that without hitting a traffic light/stop sign/intersection... name it and I have it over here... LOL.
I did know those points but like you said... there is nothing wrong with hearing it again... 🙂
Thank You.