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A recent study by Canadian researchers from McMaster University, published in the latest issue of the American Journal of Physiology – Cell Physiology, suggests that muscle changes resulting from exercise can help improve the Mood and to resist depression in the elderly, the Anatolia News Agency reported.
The study team followed a group of healthy men, with no history of depression, who participated in a 12-week exercise consisting of a leg and shoulder resistance exercise using a device. special, as well as stationary bike exercises.
The study team discovered that exercise resulted in muscle changes whose positive effects reflected the improvement of mood by stimulating the production of an enzyme called KAT, an enzyme that causes certain proteins that help regulate the expression of genes and treat the metabolism of tryptophan in the body.
And tryptophan, one of the basic amino acids in the body, and plays a key role in controlling the psychological state of the human, where it regulates and the secretion of l '. hormone "serotonin", known as the happiness of the hormone, and suffering from patients with depression of low levels of serotonin in the blood. Tryptophan also improves peripheral nerves and resistance to the symptoms of aging.
In its latest report, the World Health Organization (WHO) revealed that more than 300 million people worldwide are currently living with depression and warned that infection rates had increased by more than 18 % between 2005 and 2015.
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