How To Influences Muscle Growth: The basis of this new study is the previous work of the same scientist. In their previous study, Lessard and his colleagues studied the genetic makeup of rodents that developed to respond very well or very poorly to resistance exercise.
It was then that researchers discovered for the first time that the JNK molecular pathway was responsible for the performance of mice on treadmills.
In this new study, researchers hope to learn more about why JNK plays such an important role.
Therefore, Lessard and the team knocked out the JNK gene in a group of mice and compared their behavior with the behavior of normal mice.
The eliminated rodents remain healthy and continue running on the tape for long periods of time.
Then, the researchers trained both groups of rodents. At this point, the scientists discovered that the aerobic capacity of JNK-free mice and the increased strength of blood vessels and muscle fibers increased resistance.
In contrast, in muscle growth experiments, rodents without JNK failed to increase their muscle mass, whereas conventional mice increased their muscle mass.
New research also includes human tests. Lessard and his colleagues called for healthy volunteers to participate in weightlifting or cycling, which is resistance training.
The test found that JNK was very active in the previous exercise, but not active in the second.
Because the study also found that JNK is associated with metabolic inflammation, researchers hope to inhibit this pathway to prevent metabolic diseases such as type 2 diabetes.
In addition, these findings may be useful for those who want to develop muscle but can not develop muscle due to various diseases.
Each muscle consists of thousands or tens of thousands of small muscle fibers. Each muscle fiber is approximately 40 mm long. It consists of fine fibrils.
Each muscle fiber is controlled by the nerves, which causes it to contract. The strength of the muscle depends mainly on the amount of fiber.
To provide energy to the muscles, the body metabolizes food to produce adenosine triphosphate (ATP), which converts ATP into mechanical energy.
The skeletal muscles move the outside and the extremities of the body. The skeletal muscles cover the bones and shape our body.
For each skeletal muscle in the human body, the other side has the same skeletal muscle.
There are approximately 320 pairs of identical bilateral muscles. When one muscle contracts, the other muscle is stretched, allowing exercise.
The muscles join strong tendons that can attach to the bones or connect directly to the bones. The tendons extend over the joints, which helps keep the joints stable. We consciously control skeletal muscle.
When the skeletal muscles contract, most of the movement we can see occurs. These include moving the eyes, head, arms, fingers, running, walking and talking.
Facial expressions such as smiles, frowning, movements of the mouth and tongue are controlled by the skeletal muscle.
The skeletal muscles are constantly adjusted to maintain posture. They keep a person’s back straight or keep their head in one position. The bone must be in the correct position so that the joint does not dislocate. This is what skeletal muscles and tendons do.
Heat also occurs when the skeletal muscles contract and are released. This helps maintain body temperature. Almost 85% of body heat is due to muscle contraction.