Muscle fibers are destroyed by external and internal shocks. Active oxygen Destruction caused by is an internal shock. Removing active oxygen can prevent destruction by internal shock. this Free radical revolution It is called.
Free radical revolution: Definition of muscle fibers
The part of our body called'flesh' is'① skin, ② Subcutaneous fat , ③ It is mainly composed of'muscle fibers (muscles, tendons, ligaments)'. In today's post, I will look into [muscle fibers].
What is a muscle fiber
It is a fibrous unit structure that makes up the muscle or muscle tissue of an animal. Its nature is a cell (myocyte) to a polynuclear body. In general, mononuclear ones (smooth muscle, myocardium, etc.) and multinucleus ones (skeletal muscle) also have a thin and long shape. In the cytoplasm, that is, the muscle trait, there are many very fine fibrous structures in which the fibers run parallel to the longitudinal direction, that is, the contractile direction. It is classified according to the presence or absence of medium refractive rhabdomyotes on this myofibril. These are the rhabdomyocytic and smooth muscle fibers. Rhabdomyolysis fibers generally contract rapidly, but are prone to fatigue. Smooth muscle fibers contract slowly but can continue to work.
Can be defined as.
Free radical revolution: Theory of <extreme exercise → muscle fiber rupture>
You probably know that muscle fibers rupture when you exercise. Because I know it from experience. “I exercised a lot, and then I put a lot of effort into the area where I used it, and it ruptured.” So this is the reasoning. “Muscle fiber rupture and exercise will be closely related.”
In other words, if there are no other variables, the theory of <radical exercise → muscle fiber rupture> can be established.
This is a theory that has always been common sense.
Now things have changed. This is because'another variable' called active oxygen was discovered. If so, the necessity to reexamine the theory of <radical exercise → muscle fiber rupture> has emerged.
External shock is the only cause that destroys muscle fibers <immediately>
First, let's find out the characteristics of the muscle fibers. Muscle fibers are tissues that move our body through contraction and relaxation, and are very elastic and the strongest tissue after bones. Can the intact, intact muscle fibers rupture <immediately> like swinging a badminton racket or throwing a baseball ball?
In conclusion, muscle fibers in intact condition are ruptured <immediately> only by the'external impact' of a traffic accident. If it's an'internal shock', the muscle fibers will not be able to be released or lifted up before they rupture.
Free radical revolution: Proof 1
For example, even if you try to throw a baseball ball at a speed of 200 km by yourself, there is no muscle strength (that is, there is a limit of'internal impact'), so the ball moves out of the hand around 100 km. <immediately> does not burst.
In other words, as the arm flies at a speed of 100 km, the muscle fibers of the shoulder tendon hold the arm so that the arm does not fall apart.
However, if a car running at a speed of 100km with the upper body secured to the seat collides with each other, the arms will fly at a speed of 200km in total (because the other upper body is firmly fixed), and the muscle fibers of the shoulder tendon will become < Immediately> will burst.
Free radical revolution: Proof 2
Another example of this external shock is golf Smack There is. The elbow ligament is shocked by the outside called the ground where the swinging golf club hits, causing the muscle fibers to rupture <immediately>.
Another example of an external shock is the soccer tackle. The knee and ankle ligaments are shocked by the outside called the opponent's foot, causing the muscle fibers to rupture <immediately>. Monster Gear thinks that unless it's such an impact, those elastic and hard muscle fibers will never break <immediately>.
Internal shock is the only cause of muscle fiber rupture due to exercise
So why on earth does our shoulder tendon, elbow ligament, or knee ligament rupture when we exercise a lot? In the previous post, you will remember free radicals that were produced as a by-product in the process of mitochondrial energy metabolism in muscle fiber cells.
I told you that as soon as free radicals are generated, they destroy cells by taking two electrons from the atoms of the surrounding cells. The cells around it are muscle fibers. And free radicals continue to occur as you exercise, that is, the longer you exercise. And it continuously destroys the muscle fibers.
The more exercised people are, the more likely they are to experience pain in the shoulders or elbows. Therefore, it can be pointed out that free radicals are the culprit that ruptures muscle fibers during exercise.
Until now, it has been known that muscle fibers rupture only with vigorous exercise. However, the muscle fibers are so elastic and hard that they will never rupture <immediately> only with intense exercise. It is the rupture of muscle fibers <step by step> by free radicals generated as a result of intense exercise.
There may be an opinion that "is not the same in conclusion?" However, it is completely different. Because it offers hope. “Even though I exercised violently, I effectively remove free radicals. If you can do that, your muscle fibers won't rupture even after intense exercise.”
In other words, the common sense that “muscle fibers must rupture when you exercise intensely” is broken. That Monster Gear dares to refer to this as the'Reactive Oxygen Revolution'.
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