Muscle biomechanics is a very complex process. Anyone who wants to buy a latex expander must have the necessary knowledge of how muscles work. First, it’s interesting. Secondly, depending on many factors, which include: frequency, duration of training, load level, number of approaches (reps), you can get completely different results.
When starting classes, you need to see the ultimate goal:
— good physical shape, health;
— weight loss by reducing subcutaneous fat;
— increase in muscle mass;
— development of strength, endurance, coordination of movements.
Thoughtless repetition of exercises from the book may not lead to the expected result, or make classes tedious, unpromising.
Rubber expander will make muscle fibers work
As you know, human muscles are a state of two types of muscle fibers: fast and slow. From birth, a person receives them approximately equally.
The proportions can change naturally with the aging of the body, or as a result of training loads, when one group is worked out more.
So, slow fibers are included in the activity with low strength and duration of loads, when the work is focused on endurance. It is this load that is typical for training with rubber expanders, fitness rubber bands. If the goal of training is to maintain good physical shape, then a leisurely pace will help to do this. After such exercises, a person is charged with a good mood and does not feel tired.
Increasing the pace, moving to more «hard» fitness rubber bands provoke the inclusion of fast muscle fibers. Contrary to popular belief, rubber expanders are quite capable of using them in their work. This property is actively used by professional athletes for practicing shock or swing movements with the resistance of the expander.
Coordination of muscle groups is a significant plus of rubber expanders
None of the free weights or machines develop intramuscular coordination the way elastic bands do. Each movement of the joints causes a contraction of a certain group of muscles. The most effective will be the movement, in which, in addition to the main beam, the synergistic muscles (assistants) are connected, and the antagonist muscles (obstructing movement) are completely turned off. In the famous biceps curl, the forearm muscles are synergistic and the triceps are the antagonist. Rubber expanders, thanks to their elastic traction with increasing resistance, perfectly coordinate the muscles with each other.