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To achieve the results of this study conducted by researchers from the University of McMaster, Canada, and published in the latest issue of the journal (American Journal of Physiology – Cell Physiology), the team observed a group of healthy men with no history of depression.
Men over 65 years of age participated in a 12-week exercise consisting of a resistance exercise of the legs and shoulders, with the aid of a special exercise machine, as well as stationary bike exercises.
The research team took blood and muscle samples and examined the expression of the gene and protein in the muscle before, during, and after the experiment. They found that aerobic exercise caused a muscle change that reflected its positive effects on mood enhancement.
The researchers also discovered that the sport promotes the production of an enzyme called "KAT", which leads to the production of certain proteins to regulate the expression of genes and the treatment of tryptophan metabolism in the body .
The study found encouraging results on the benefits of increased physical activity to improve the mood of older people.
In its latest report, the World Health Organization (WHO) revealed that more than 300 million people worldwide were currently living with depression, warning that the incidence of the disease had increased by more than 18% between 2005 and 2015.
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