Sarcoplasmic hypertrophy (mainly refers to the improvement of endurance): refers to the increase of non-contractile components of muscle fibers leading to the increase of muscle volume. The main manifestation is the increase of non-contractile protein components (mitochondria, muscle glycogen, creatine phosphate, myoglobin, etc.) in muscle fibers. However, the influence of this muscle hypertrophy on the maximum muscle strength is not obvious. Generally, low-strength training can cause functional hypertrophy of sarcoplasmic fluid. The main muscles are fast red muscle and slow red muscle.
In this increase of non-contractile components, not only the number of mitochondria increases, but also the volume increases. Mitochondria are also the energy supply center of cells, and participate in the oxidation of intracellular substances and the formation of ATP. Especially in endurance sports, the change of mitochondria makes muscle endurance performance stronger to meet the needs of endurance sports.
The increase in the number of capillaries in skeletal muscle is more conducive to the elimination of metabolites and the supply of nutrients, which makes muscles show stronger functions.
Second, improve metabolic rate and prevent obesity.
After muscle development, muscle strength and endurance are improved, which means that not only the muscle consumes more energy per unit time, but also the exercise lasts longer, which can metabolize more energy in the body and effectively prevent obesity, thus preventing some complications caused by obesity, such as hyperlipidemia and hyperglycemia.