I'm able to exercise but am still disabled

I was very consistent and the issue with my loss of functions was disease processes first and foremost.

One of the ways I can (with hindsight) track the evolution of my me/cfs is specific junctures where I suddenly saw I couldn't exercise to the same level, but it happening much more suddenly than deconditioning could possibly have happened at the time in my life context.

A hill I could always cycle up non stop then suddenly couldn't. (at the peak of my fitness and 19)
PEM malaise hitting me half way through a hiking holiday I couldnt have even started if I'd been deconditioned

An ability to hike for km with my border collie then suddenly crazy disproportionate pem on the sofa for the rest of the weekend. - That's when I knew I was ill and went to the Dr.

With me PEM from the disease came first and shrank the limit of my function.

It may be there now I'm severe but I don't even have that headroom pem hits first.

 

I agree with this, we will not be afforded the luxury of being immune to deconditioning. It's not the number one cause of our problems, not by a long shot. And even if it is there, doesn't mean doing exercise is worth it. The short-run symptom cost of exercising is for most people greater than the upside of exercising. Add in the risk of a drop in baseline and the risk of exercising becomes far greater than any upside from exercising for most pwme.

But it is there, in the background, meaning that even on the best, lowest-symptom day, we are going to have less capacity than before we got sick.

is this chart helpful?




I find benefit from exercising, from being stronger, and I think that's because of two factors in my me/cfs. 1. I'm mild. 2. POTS is a big issue for me. I suspect people for whom POTS is a tiny part of their symptom constellation are less likely to experience any upside from exercise.

I'd also make a strong argument that for anyone with even the faintest amount of POTS, walking is a super bad choice. it just shakes all the blood to your legs, and it doesn't do much to make you stronger. The famous Jen Brea story of decline is a story of walking too far. Everyone perceives walking as the most gentle exercise, its the go-to for the sickly and faint, but my feeling is its kryptonite for anyone whose mecfs includes pots.

The controversial extension of this observation is that there are probably higher and lower risk types of exercise. If I had to guess at what is lowest risk it would be brief bursts of strength exercise on small muscles, that terminate well below threshold and are done sitting down/recumbent. bicep curls a good example.

One idea I sometimes consider is that pacing is to mecfs what the banana diet was to coeliac disease. It helps enormously but we haven't grasped why. When we zero in on why pacing is so good, and why aggressive rest can sometimes even lead to a lift in baseline, then we might actually be able to define higher and lower risk types of exercise with precision. Until then we're splashing round in ignorance and exercise is very risky.

 

This matches my experience too. Even though my strength is okay (can lift my 20kg child easily), and my fitness is okay (could do a ten minute bike ride right now). I can't do a full day of activity, or even a half day, or even an hour on my feet really, without big PEM.

I need to intersperse heavy rests with any activity to have a chance to endure it:

• Something that builds up needs to be given a chance to be broken down;
• or perhaps something that is used up needs to be given a chance to recover,
• or perhaps some receptor that is pushed towards its trigger point needs to be given a chance to move back.

I've considered a lot of theories for this over time, but recently i've been taking a POTS-centric view and asking: if the brain is starved of blood flow for a short time, perhaps it recovers well enough, but perhaps there's a threshold. Perhaps if you leave your brain with 40-70%* blood flow for a certain amount of time, without a nice long respite where you lie down and hydrate, it decides to triggers some sort of immune response with metabolic features.

*figures made up to illustrate, point is not about this specific level, it's a story about the possibility of reduced cerebral flow being a key PEM trigger. Would explain why we all love a good lie down.

 

I can exercise on the bike, walk for quite a while (with PEM the next few days), my VO2Max is okay but I cannot run or even jog for more than a very short distance. Exercise also causes OI as a PEM symptom. My 6mwmd is like ~850m.

 

I agree with this. I don't consider myself to have POTS but it feels like one significant barrier to continued activity is that feeling of decreased blood flow to the brain. I know this from when I had real POTS and more marked OI. It's the same sensation. It seems that the body gets tired after a while and can no longer provide optimal blood flow to the brain and this causes some of the intolerance of activity, perhaps because operating in this state is abnormally stressful.

 

I don't have POTS but have a different form of dysautonomia that the doctor won't further classify. I asked why he hasn't diagnosed it as inappropriate sinus tachycardia and he said he doesn't diagnose that as the goal posts for it's criteria keep changing and no one agrees what it is.

Anyhow, that gets in the way of me being able to do things I might otherwise have had the energy for... but doing stuff that gets my heart up more just gives me more fatigue.

This thread is very interesting to me hearing how others do or don't do activities. I haven't wrapped my head around how me/cfs doesn't seem to be a spectrum like my mind expects it to be. For example, someone sounds a lot like me but then says they can do this long hard activity in this certain time frame and it blows my mind how that is possible.

 

That’s how I think about it. Although the deconditioning probably tapers off over time, it will only increase to the level that is maintained by your current activity level. The delta between your conditioning and activity decreases with time, so the change rate decreases as well.

 

It’s pretty similar for me, even before the recent improvement with malic acid I could walk for a while, even cycle, provided I could put up with the pain that was eventually triggered. Prior to taking a stimulant I didn’t have that immediate pain so I could actually push for quite a while if I needed to. But having to sprint to catch the bus or anything that really elevated my heart rate immediately wiped me out. Felt like my body just gets flooded with something and the weakness comes within a few minutes

 

We still don't have the right theory for what's going on, but instead have lots of theories that are wrong, but people are stuck on because those theories fit their individual experiences. I mostly dismiss theories based on mitochondrial dysfunction, because my experience is that I'm not seeing any signs of inadequate ATP production, even when my symptoms are at their worst. Likewise, my physical PEM triggering seemed to not be by muscle exertion, but by unaccustomed muscle strain. Do we have different mechanisms, or is there another theory that would fit the wide variety of experiences? I think we could do with some more out-of-box ideas.

Maybe the right theory will involve certain brain cells involved with tail wagging, which aren't working properly due to our atrophied tails.

 

What do you mean by unaccustomed muscle strain? Is this how PEM is triggered now or how it has always been even in the beginning?

Mine is exertion period be it regular or unaccustomed. I don't really know if one or the other is worse as I haven't thought about it or observed.

I feel like I went from normal to losing the ability to do normal exertion to normal levels.

 

I also think certain issues in the mitochondria themselves (e.g. non-functional ETC proteins) have been well ruled out at this point. But it would be quite a fallacy to boil down all of metabolism to "inadequate ATP production"--that's what I've been trying to get at with a theory involving malate-aspartate shuttle function. With all the various ways that ATP production can be compensated for, you wouldn't expect to see a big "lack" of ATP at any point, that's just going to end up with cell death. But plenty of ways for things to go wrong with consequences like you might see in ME/CFS with a metabolic theory, at least for some parts of the illness