Discretionary exercise for the sake of it is way off topic for people who have to pace activity of daily living.
What is found in the general guidelines of "150 minutes of moderate activity a week/30 minutes a day" is that more is better, and that there is a linear relationship (up to some point).Something I've been wondering about: are the supposed benefits from exercise linear? Does walking 40 minutes a day provide double the benefits as 20 minutes, and walking 400 minutes (6.7 hrs) provide 10x the benefits? Are the benefits really non-linear, with a minor amount of exercise providing a lot of benefit, with more exercise providing little additional gain until some threshold is reached to provide further gains? It's hard for me to measure benefits, but my experience is that I can do a lot of extra physical activity for months without noticing any improvements. I typically do a 45 minute walk daily "for my health". What level and duration of exercise would be needed to notice an improvement?
I noticed studies and headlines about this over the last few years and it's all over the place, there is zero consistency in anything.Something I've been wondering about: are the supposed benefits from exercise linear? Does walking 40 minutes a day provide double the benefits as 20 minutes, and walking 400 minutes (6.7 hrs) provide 10x the benefits? Are the benefits really non-linear, with a minor amount of exercise providing a lot of benefit, with more exercise providing little additional gain until some threshold is reached to provide further gains? It's hard for me to measure benefits, but my experience is that I can do a lot of extra physical activity for months without noticing any improvements. I typically do a 45 minute walk daily "for my health". What level and duration of exercise would be needed to notice an improvement?
For PWME, this matters because there might be a fairly minor level of activity that is enough to maintain basic body functions. Most exercise research has probably focused on healthy people trying to build muscles or lose weight, and thus isn't applicable. If studies haven't been done on the truly minimal level of exercise needed to maintain health for people with limiting medical problems, that would be worthwhile research.
Something I've been wondering about: are the supposed benefits from exercise linear? Does walking 40 minutes a day provide double the benefits as 20 minutes, and walking 400 minutes (6.7 hrs) provide 10x the benefits? Are the benefits really non-linear, with a minor amount of exercise providing a lot of benefit, with more exercise providing little additional gain until some threshold is reached to provide further gains? It's hard for me to measure benefits, but my experience is that I can do a lot of extra physical activity for months without noticing any improvements. I typically do a 45 minute walk daily "for my health". What level and duration of exercise would be needed to notice an improvement?
For PWME, this matters because there might be a fairly minor level of activity that is enough to maintain basic body functions. Most exercise research has probably focused on healthy people trying to build muscles or lose weight, and thus isn't applicable. If studies haven't been done on the truly minimal level of exercise needed to maintain health for people with limiting medical problems, that would be worthwhile research.
What level and duration of exercise would be needed to notice an improvement?
This.By definition, people who experience PEM are already exceeding their activity capacity at times.
I know of no mainstream medical treatment that does not have potential side-effects, even when administered perfectly.The side effects of "exercise as medicine" can be detrimental even when you think you're within the PEM triggering threshold.
Very important question. The long-term follow-up results for PACE suggest strongly to me that the APT and SMC arms were on a better trajectory for sustained long-term benefit than the GET and CBT arms.Additionally, we lack understanding of the long-term effects of exercise on disease trajectory with PEM. Are those who do not exercise, especially, more stable in the long term compared to those who continue exercising, even if they don't experience PEM? It's possible that individuals who persist in exercising may actually fare worse. Based on my own experience, I wouldn't be surprised if this were the case.
Say you have Long Covid but no contraindications to exercise including no PEM. I don't really need data from an exercise test to start you on an exercise program and proceed cautiously, monitoring for signs and symptoms of PEM. It can be a very simple, low-tech clinical approach.
I took that to mean if someone has long Covid and is consulting a clinician, perhaps because they get breathless when walking, and are worried about restarting sports or other vigorous activity, then it may make sense to advise them to increase activity gradually rather than diving straight in. That way they find out whether they start crashing when they increase, or don't have any PEM problems.So where on earth does that idea come from.
Why should any of these people need an exercise programme?
With friends like this...
It is daft to ask people with already limited capacity for exertion on activities of daily living to add an exercise program.A clinician asking a patient living with PEM to pace on one hand and exercise with the other is usually the living embodiment of the expression "robbing Peter to pay Paul." Worse, we are asking the patient to do less of what they want/need to do in service of an exercise program.
it may make sense to advise them to increase activity gradually rather than diving straight in.
It's important to note that there are various subsets of PWME. I'm in the subset that haven't suffered lengthy crashes. PEM lasted hours or days. Bad reactions to foods or supplements generally lasted the same time frame. So, for this subset, experimentation is fairly safe, and lets us adjust our lifestyles to minimize symptoms.That's because I've always managed to recover from minor PEMs without long-lasting effect.
Yes, I thought of that last night. Not having crashed doesn't guarantee that I won't crash in the future. Likewise, someone who did crash from testing LDN isn't guaranteed to crash from any other treatment or activity. It's all a matter of personal judgement of risks, and those risk probabilities change over time. That's another difference between ME and many other diseases: ME is far less predictable.We don’t know how fixed being in a particular subset is given there are people who start off relatively mild who become severe or very severe.