Sportkun Finish 5 Uds. de 70 g

Physical activity increases the animal's protein needs due to an increase in the synthesis of structural and functional proteins, as well as an increase in tissue catabolism. Branched-chain amino acids (leucine, isoleucine, valine) are "essential" and, therefore, must be replaced through food. Supplementation with branched-chain amino acids decreases exercise-induced protein degradation and the release of muscle enzymes (indicators of muscle damage). Thus, supplementation with branched-chain amino acids during intense training helps increase lean muscle mass.

The transport of tryptophan across the blood-brain barrier depends on the plasma concentrations of tryptophan and other large neutral amino acids (LNAA; tyrosine, phenylalanine, leucine, isoleucine, and valine), as they compete for the same transport mechanism. A high postprandial insulin level in the blood after a carbohydrate load favors the transport of tryptophan to the brain because it mediates the uptake of LNAA into muscle but not tryptophan, which is largely bound to plasma albumin, increasing the tryptophan/LNAA ratio in the blood and favoring its transport into the brain.

Inflammation generates a large amount of free radicals, which in turn accelerate the inflammatory process. Vitamin E is one of the most effective antioxidants to protect the oxidation of polyunsaturated fatty acids that make up cell membranes. It prevents lipid oxidation by eliminating peroxyl radicals before they can react with fatty acids or proteins of adjacent cell membranes.

It is the most potent reducing agent available to cells. Vitamin C regenerates the enzyme glutathione, neutralizes free radicals both intra- and extracellularly, and protects against free radical-mediated protein inactivation associated with oxidative neutrophil rupture.

It acts as a cofactor of glutathione peroxidase, an antioxidant enzyme that protects tissues against oxidative stress by catalyzing the reduction of hydrogen peroxides and organic hydroperoxides and by regenerating vitamin E.

A high level of physical activity increases the requirements for all B vitamins. Many of them act as cofactors in key enzymes of energy-generating pathways, as well as in the process of tissue synthesis and repair caused by exercise. In addition, physical work accelerates the excretion of water-soluble vitamins, such as B vitamins, due to the increased turnover of total body water.