Effect of LL on muscles, blood vessels and nerves

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Here's the study
https://pubmed.ncbi.nlm.nih.gov/2910611/

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Quote from: indian on March 20, 2021, 03:05:17 PMIt's basic biology.

  Can you tell me which chapter in 7th grade this was taught in?

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Quote from: REBORN on March 20, 2021, 03:08:30 PMHere's the study
https://pubmed.ncbi.nlm.nih.gov/2910611/

This study was performed on canines (okay we might assume that the changes would be similar in humans) and no analysis on blood vessels and nerves is made. The study is focused on tissues.

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people cut their blood vesseles and nerves all the time in accidents and other things. My friend cut his blood vessel in an accident and almost died by bleeding it he recovered and they regenerate. If you'll google enough you'll find some proof.

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Quote from: indian on March 20, 2021, 04:04:09 PMpeople cut their blood vesseles and nerves all the time in accidents and other things. My friend cut his blood vessel in an accident and almost died by bleeding it he recovered and they regenerate. If you'll google enough you'll find some proof.

Broken blood vessel is different from a stretched blood vessel. How do you know that the diameter of a blood vessel doesn't reduce with stretching?

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Quote from: raymond on March 20, 2021, 05:55:54 PMBroken blood vessel is different from a stretched blood vessel. How do you know that the diameter of a blood vessel doesn't reduce with stretching?

Because they're made of cells.

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Quote from: Medium Drink Of Water on March 20, 2021, 08:53:17 PMBecause they're made of cells.

So stretching any part of the body that has living cells means that it will regenerate and not reduce in width?

Will that apply to the liver and kidneys? Do you think we could surgically break some vertebrae and put a lengthening plate and lengthen them and all the organs in the torso would regenerate and behave normally?

edit = I'm not seriously suggesting torso lengthening, I just brought that up to prove my point that stretching any living body of cells doesn't mean proper regeneration.

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Blood vessels you have nothing to worry about. As long as you exercise regularly and are young enough (like <60), don't smoke, your blood vessels will be fine. Even after a heart attack, one of the points of encouraging cardiac rehab (exercise) is that you can still create new blood supplies to compensate for the blocked areas. See: https://symbiosisonlinepublishing.com/cardiology/cardiology46.php

So you should have zero concern about blood vessels. Blood vessels are easy as your body is built to recreate them any time you get a cut or tissue damage. No stress.

Muscles are a bit trickier. I read one study on rabbits who had their muscles stretched (if I recall correctly) and they had not just stretching of the muscle but new muscle tissue development.

I think there are two perspectives on what happens to the muscle when we stretch it in LL. One is that we become permanently weaker to a slight degree because the muscles are permanently stretched past their ideal function length (and thus won't contract as strongly anymore). Another is that we might actually create new muscle tissue like the rabbits so function is preserved. Probably this is different for each person and the truth is somewhere in between.

Humans don't make muscle tissue easily. Eg. If you get a gunshot through your bicep, you're going to get a big scar through the muscle. It won't regenerate as perfect new muscle.

Even worse are nerves. Obviously we can't regrow nerves easily at all. During the stretching nerves can become permanently damaged but the ones that seem most prone to this are the sensory nerves of the shin which most people don't care much about. In theory nerves can grow 1 mm per day but this probably also varies person to person.

When we do flexibility training, many people hypothesize that we aren't actually gaining more stretchability of our muscles but rather just retraining our nervous system to tolerate greater amounts of stretch. Perhaps this is also the nerves stretching a bit.

Either way if you're worried about stretch related damage your best bet is to maximize your flexibility before the surgery. If you're super stretchy already, then the 7 cm of lengthening will just return you to the "normal range" of flexibility and one hopes your nerves and muscles will best tolerate it.

You should also expect not to be as explosively strong after if you care about that sort of thing. Unless you get lucky.

From my perspective none of this is a big concern. I worry more about misalignments of the joints and mechanical axis which could lead to inefficient motion, chronic joint pain and premature osteoarthritis of the knees/hips/ankles. It only takes a very slight error in the surgeon's hand or poor planning to throw this off.

The soft tissue stuff is more minor. Alignment is everything.

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Thank you so much maximize.

As for your worry about misalignment, it's a fixable problem. Down the line if you develop problems, fixing alignment is far easier than LL. There are procedures like HTO which have quicker recovery time than LL. No one enjoys surgery but misalignment pertains to bones which can be fixed.

The problems caused due to stretching if any are fundamental and not something reversible even with shortening. With shortening the problem is, blood vessels might have adapted well to the new length but not muscles, so when you shorten, muscles would be happy but blood vessels would not be since they would have grown.

The same way you argue that even if muscles don't regenerate you would be like a less flexible person, I would argue that even if your alignment isn't perfect after LL you would like those people who don't have perfect alignment but get by just fine. Look around and you will see people with bow legs, knock knees, mild length discrepancy and not everyone tries to get them fixed. My alignment is not perfect to begin with, so LL might even make it more theoretically correct for example.

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Quote from: raymond on March 20, 2021, 09:09:45 PMSo stretching any part of the body that has living cells means that it will regenerate and not reduce in width?

Will that apply to the liver and kidneys? Do you think we could surgically break some vertebrae and put a lengthening plate and lengthen them and all the organs in the torso would regenerate and behave normally?

edit = I'm not seriously suggesting torso lengthening, I just brought that up to prove my point that stretching any living body of cells doesn't mean proper regeneration.

If you remove 50% of the liver it'll regenerate fully to 100%. This is a fact.