My experience is very similar to DAnnFL's. I also did VO2Max testing about 5years ago at Hunter Hopkins and discovered that virtually all my daily activities put me over my AT. The heart rate monitor with the alarm was a real eye-opener, not just for me, but for my family and my students.
I cut back HUGELY on my activities based on the feedback from the heart rate monitor. I also kept very careful logs for a couple a weeks that included AT for certain daily activities, and avg HR over the day and how I felt. Moderating my activities based on staying below my AT was one of the best things I've done for my ME.
Once I moderated my activities based on that info, I had fewer flares/relapses -- especially ones with muscle pain. But it means that I have to dawdle in bed in the morning, sit to shower (or do much of anything) and walk v-e-r-y s-l-o-w-l-y.
I'd like to add some points from my experience that I'm not hearing from Dr Klimas or anyone else (so far). For several years I managed my behavior and activities to stay just below my AT. I didn't have as many pain flares and I think I maintained my level of (ill) health during that time.
However, I didn't get better, either. I was happy to be doing as much as possible (even if it wasn't much) without making myself worse.
When I caught H1N1 and had a major infection-induced relapse (the whole bag of worms -- pain, exhaustion, terrible brain fog), I couldn't recover.
Some time after that I started on Valcyte, which has given me big improvements so far (bedbound to housebound), but I've found that in order to really make progress, I have to rest
way more than I would if I was staying just below my AT.
So, for me, at least, staying below my AT seemed to moderate my pain-type flares, but didn't do much for the more immune-type ones (exhaustion, sore throat, swollen lymph nodes). And I wasn't getting better, I was just not getting worse.
While I've been on Valcyte, it's been clear that if I do as much as I can without going over my AT, a make some, but small, progress with lots of slide-backs. If I force myself to uber-rest, I improve faster and don't have the regressions.
I have to question, for me, anyway, the wisdom of maintaining activity near the AT limit until I'm in the "mild" range -- which looks to me like a recovery phase where we are probably not dealing with serious infections (or only intermittently).
In conclusion, for me, moderating my activity to just below my AT educated me and those around me to what was needed to stop getting slowly worse. That was amazingly useful.
But in order to get better, I have had to stay well below my AT.
Just my experience, YMMV.
PS I'm wondering if Dr Klimas' exercise experience/recommendation is based on people who are routinely taking the immune modulators she often recommends. That may alter how the patients react to exercise. Just a thought....
Tristen - Not sure if my experience might be of use, but just in case here's what I've found so far:
I had VO2Max testing 5 years ago at the Hunter Hopkins center (DrLapp's team) in NC. They gave me my Anaerobic Threshold (AT) heartrate and had me wear a Polar heart monitor like the one pictured in the article that had an alarm to warn me when I was crossing the AT. It was EXTREMELY helpful; for by making sure I didnt go over my AT, I had fewer crashes and less pain. It makes SO much sense avoid the buildup of lactic acid in the muscles and then they wont hurt as much; avoid the extra stress on the heart and avoid triggering cytokines.
Wearing the monitor daily was an eye-opener. It taught me what my limits really were even in everyday activities, not just exercising. It was interesting that during 'crashes' even light activities like combing my hair could send me over my AT! The alarm going off forced me to take a break and prevent over-doing it = fewer and less severe crashes.
Emotional and mental stress would also set off the alarm at times and it was interesting to see how the deep breathing exercises from the Telehealth study could quickly bring my heart-rate back down. This, in turn helped me to have fewer post-stress crashes.
Using the monitor also helped my friends learn to respect my limits, for there was a tangible alarm telling them I had passed my limits even when I still looked fine. When I had to have physical therapy, the alarm helped the therapist to respect my limits, too.
Just a thought for those who can't afford VO2Max testing: If you live near one of the sites doing testing, like Dr. Klimas is currently conducting in Miami, you can get free VO2max testing by participating -- keep your eyes open for testing near you!