|The Bike Doc
Joined: 08 May 2003
Location: Corpus Christi and Warda, Texas
|Posted: Wed Mar 03, 2004 6:09 am GMT +0000 Post subject:
If you find your tolerance zone of an all out time trial effort of 30 minutes is at 167 beats but the lab measured LT zone is 155, I would recommend you listen to your body. You can push your LT level up. What remains fixed is your maximum heart rate. With training, your tolerance for lactate buildup moves upward. You will find, as you have discovered, you can push your heart rate further. Use the 167 heart rate for you LT target zone. Now, be aware that your zone can drift downward with deconditioning. So if you have taken some time off the bike and gotten out of training, using the lower 155 as your LT may be appropriate.
Paul K. Nolan, MD
AKA: The Bike Doc