You can view the page at http://www.forums.aboutmecfs.org/content.php?246-The-E-Work-by-Jennifer-Spotila
I'm glad to see this article (thanks, Jenny!). I looked into this in some detail a few months ago and really couldn't fathom how any of us could establish an appropriate heart rate baseline without the Pacific Labs testing. It was clear on the thread where we were discussing it that the usual formulae (age-based) for calculating your anaerobic (or was it aerobic, I forget!) threshold don't seem to apply.
Oops, sorry didn't mean to quote you Sasha, getting a bit brainfoggy!!!
Finally, I am right in understanding that if one keeps carefully below one's individual AT limit, with time this can actually increase the AT limit, translating into being able to do more?
Thank you so much, George! I tried to include info for both audiences, and make it practical, and not overwhelming, and cover the range of disability/ability in patients. It was a lot to cram into one article!
My understanding is that it is possible, but not guaranteed. Some people are able to raise the AT limit, allowing them to do more before hitting it. Some people are able to improve their capacity to repay that oxygen debt, in other words recover from activity more quickly.
But Stevens, et al are very clear that this improvement does not occur for everyone. Improvement may be slight, and slow in coming. The protocol is designed to help patients maximize what they can do within their current limits, as well as try and push the line of those limits if possible.
Sasha commented on calculating the AT without extensive testing. It takes experimentation. 50% of age predicted max heart rate is one place to start, but Staci Stevens emphasized using the Borg scale of perceived exertion as well. If an activity feels very hard, then it is past your AT and you should stop. Using more than one measure seems like it would increase an individual's chances of finding the right level.
BEG, I agree with you. I included a caution about OI in the article for just that reason. I also quoted Staci saying that "exercise" doesn't mean what most people think it does. You are correct that any movement counts as exercise for us. And yes yes yes, if something feels very hard then stop and eliminate that activity! I hope these cautions came through in the article. Like I said, I crammed a lot of stuff in one short piece. Any one of the paragraphs could be expanded significantly.
Thanks for your reply, Jenny. I see the "E" word and something comes over me. I see red which is probably why I didn't absorb parts of your article. I've been told to excercise too many times from a very excellent doctor who also diagnosed me with POTS.