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I haven't read the paper, but what I am curious about, how much of the damage can be turned back if someone becomes physically active after a long sedentary period? Let's say someone already had low fat oxidization and/or cardiovascular disease, how much of that can be "cured" by being active?

This post claims: the good news is, this is reversible. But is that so? Is it also proven to reverse things in all cases? I would imagine there are caveats, and things are not that rosy in reality.

The reason I am asking because if the answer is "None. It can only keep the symptoms from worsening" then it's not really reasonable to expect people with such physiological situation to become active again.

They will most probably need to put in much more effort to achieve much smaller gain compared to a healthy individual, which is as I said is unreasonable. Especially because some people simply have worse genetics and or social circumstances which they might not be able to change.

So I appreciate these findings, but how I read this: you need to be aware of this to prevent the ill effects. And I doubt the reversible claim (although I have not much of an argument to corroborate that).



That's not really a relevant question, actually.

We know definitively that active is strictly better than inactive in all respects unless someone has such severe end stage cardiorespiratory issues that they risk actual death, or some other unusual condition that makes exercise contraindicated, in which case, of course, speak to a doctor and obey their advice.

Even if it merely preserves function (which I would be skeptical about, humans are amazingly adaptive), the alternative is inactivity and thus gradual loss of function indefinitely over time until death.


I didn’t strength train until my 40s. Started being able to curl 15 pound weights. Now at the same reps I’m up to 20 or 25. Years later :)

It takes time. It’s a very steady climb. No doubt if I was a teenager I’d make much faster progress.

But it’s not just about the raw amount of weights, my running pace, etc. The benefits for my mental health in the moment. Improving my sleep and stress. And myriad other benefits make it worth it.


"If you're in your 70s and benching 150, you fuckin' think anyone needs to help you with a fuckin' jug of milk? Fuck that."

- Dr. Mike Israetel, sport scientist and expert vulgarian

https://youtu.be/r8zcF6Ut7lo?t=903

I hope you continue, friend. The best age to start is when you're young, but the second best age to start is today. Keep at it, and never struggle to get out of a chair.


I’ve been chronically ill for 11 years now. I wasn’t really exercising basically at all for 8 of them then I started walking 3 years ago and jogging 1 year ago and cycling 6 months ago. My VO2 max was 52 at age 24. 40 when tested a year later after becoming sick. I had it retested a year ago and it was 36.5. But I ran a 5:59 mile a month ago so it is very likely higher now. But I haven’t been able to get it retested since it is expensive. But my general health has massively improved in the past 6 months. I cycle 10-20 miles a day every day. I had like diastolic heart dysfunction and tons of arrhythmia showing up years ago and had a heart monitor redone this year and the rhythm is back to what it looked like before I became ill. I’m still sick but just seems like I have more vitality anyway now despite that.


If you want to know your VO2 Max then you can do a Cooper Test for free at your local school running track. That won't be as precise as a metabolic lab test with a breathing mask but close enough.

https://en.wikipedia.org/wiki/Cooper_test


Yeah I did that a few months ago and did 1.54 miles in 12 minutes. I think I could do more now. But that is so different from gas measured Vo2 max it makes me think it isn’t that accurate for my condition. Like perhaps my body is compensating


What illness if you don't mind me asking?


fluoroquinolone toxicity and mast cell disorder

complete nightmare to live with

like I have permanent tendinopathy and muscles even still to this day lock up easily probably from mitochondrial dysfunction which would be explained by multiple lab findings I had like a really low lactate threshold compared to normal for my age

and I react to everything I eat with throat swelling eventually and constantly have to switch foods

nothing works long term I’ve tried everything I react to medications if taken long enough as well


It's not a question of trade-offs or utility. The sooner you intervene the more effective your interventions will be, sure, but it's hard for me to imagine a situation where there's absolutely no point in doing something about a sedentary lifestyle. It might be harder to improve your outcomes if you've already developed comorbidities but if one cares at all about living longer I don't see why that person should let perfect be the enemy of good.




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