FALSE
True.
Strength training improves muscle strength by causing microscopic damage to muscle fibers during exercise. The body repairs and rebuilds these fibers, making them stronger and more resilient over time. Additionally, strength training increases the size and number of muscle fibers, leading to increased muscle strength.
No it's not.
true
These are fibers that every one is born with to a small extent, but the fastest sprinters in the world having many more than the average person and work on increasing them during there training.
The cat's muscle fibers run perpendicular to its internal oblique muscles. The fibers of the external oblique muscles run opposite of the muscles.
I am not an expert. But: Strength training causes small tears in the muscle fibers. Provided proper nutrition and rest, the damaged muscle tissue is rebuilt stronger in anticipation of more heavy weights. This process continues until the muscles are fully adapted and no longer damaged from the strength training. In order to continue building muscle, heavier weights are then required to causes damage to the muscle fibers once more.
fibers
The middle fibers of the deltoid abduct the arm.
Weight training creates micro-tears in your muscle fibers. When your muscle is repaired using proteins, they have the effect of becoming "bigger".
Slow twitch and fast twitch A muscle fibers.