mustanged77
Tren Freak
no problem
OK here it goes.
Force and Tension
Lab 1
1. Take a small piece of plywood and hammer a nail in the center
2. Take some cotton string and cut ten pieces about .5 meters long.
3. Hold all the strings at one end between your forefinger and your thumb.
4. Wrap that end of the strings tightly around the nail and tie a knot. Try to keep the strings evenly lengthed.
5. Now take the other end of the strings and tie them around a pencil. Again, try to keep the length of the strings as even as possible.
OK are you with me so far?
The strings will represent the individual muscle fibrils or fibers.
The nail and the pencil will represent the attatchment to the bone.
6. Now take the board and place it flush to the end of a table. Let the pencil
hang off the table dangling above the floor.
7. Using one hand, slightly pull the pencil towards the floor.
8. With the other hand, spread the strings out evenly on the edge of the board so that you can easily count each individual string.
9. Now hold the board tightly with one hand, and pull the pencil down horizontally towards the floor so that the strings are even and tight.
Representation
1. If you pull straight down this represent a natural curl from ground to shoulder.
Look at the strings on the edge of the piece of wood when you pull straight down. They should all be even with the same amount of tension like the bridge of a guitar.
2. Do the same thing, except now pull the pencil toward the left or the right like a pendulum.
Again, look at the strings on the edge of board. Depending on which side you pull the strings the opposite side of the strings will actually be tighter than the inside strings. If you had a third hand you could pluck the strings and you would see this was true.
Conclusion:
Muscle fibers are actually attached to the bone a little sread out, like on the edge of the piece wood, not the nail. They are a little close but not as tiny of a spot as a nail.
By angling the force on the strings, the force on the outer strings will be greater than the force of the inner strings.
In the gym this equates to targeting muscle fibers by changing the angle.
If you notice when your arm is bent, the inner muscle of the bi sticks out, but the outer muscle stays flat. The outer part of the bi can never be targeted because you cannot pivot your wrist, elbow, or shoulder in the outward position. It is not a natural movement.
You will probably notice that you bi is actually the opposite as the example but that is because the mechanism that puts tension on the muscle is a contraction rather than an extension but it is still the same principle.
The same principle is used by engineers who construct large bridges that curve. The outer cables have to be longer than the inner cables to even out the tension.
Well thats the best I can do in this format to explain myself. Either you buy it or you don't.
DougoeFre5h said:A followup, straight from the link you posted:
"Skeletal muscles usually have one end (the "origin") attached to a relatively stationary bone, (such as the scapula) and the other end (the "insertion") is attached across a joint, to another bone (such as the humerus)."
Im genuinly curious to know what your take is on this. Im down for a higher level discussion if you are.
OK here it goes.
Force and Tension
Lab 1
1. Take a small piece of plywood and hammer a nail in the center
2. Take some cotton string and cut ten pieces about .5 meters long.
3. Hold all the strings at one end between your forefinger and your thumb.
4. Wrap that end of the strings tightly around the nail and tie a knot. Try to keep the strings evenly lengthed.
5. Now take the other end of the strings and tie them around a pencil. Again, try to keep the length of the strings as even as possible.
OK are you with me so far?
The strings will represent the individual muscle fibrils or fibers.
The nail and the pencil will represent the attatchment to the bone.
6. Now take the board and place it flush to the end of a table. Let the pencil
hang off the table dangling above the floor.
7. Using one hand, slightly pull the pencil towards the floor.
8. With the other hand, spread the strings out evenly on the edge of the board so that you can easily count each individual string.
9. Now hold the board tightly with one hand, and pull the pencil down horizontally towards the floor so that the strings are even and tight.
Representation
1. If you pull straight down this represent a natural curl from ground to shoulder.
Look at the strings on the edge of the piece of wood when you pull straight down. They should all be even with the same amount of tension like the bridge of a guitar.
2. Do the same thing, except now pull the pencil toward the left or the right like a pendulum.
Again, look at the strings on the edge of board. Depending on which side you pull the strings the opposite side of the strings will actually be tighter than the inside strings. If you had a third hand you could pluck the strings and you would see this was true.
Conclusion:
Muscle fibers are actually attached to the bone a little sread out, like on the edge of the piece wood, not the nail. They are a little close but not as tiny of a spot as a nail.
By angling the force on the strings, the force on the outer strings will be greater than the force of the inner strings.
In the gym this equates to targeting muscle fibers by changing the angle.
If you notice when your arm is bent, the inner muscle of the bi sticks out, but the outer muscle stays flat. The outer part of the bi can never be targeted because you cannot pivot your wrist, elbow, or shoulder in the outward position. It is not a natural movement.
You will probably notice that you bi is actually the opposite as the example but that is because the mechanism that puts tension on the muscle is a contraction rather than an extension but it is still the same principle.
The same principle is used by engineers who construct large bridges that curve. The outer cables have to be longer than the inner cables to even out the tension.
Well thats the best I can do in this format to explain myself. Either you buy it or you don't.