The results of the study, which authors from the University of Copenhagen (Denmark) presented in an article for the prestigious cell magazine metabolism, show another aspect of the beneficial effects of exercise on health.
laboratory mice, who were forced to walk on wheels, were different from the rat passive control group decreased by more than 60% chance of occurrence and size of malignant tumors.
The researchers found that adrenaline release during high-intensity training loads helps transport immune cells that kill cancer (Natural Killer, NK) to the lungs, liver or skin, where the tumor is implanted in mice.
It has been established that the immune receptors of the IL-6 family, released from the muscles during exercise, activate sensitive NK cells in them and direct them to the tumor. To date, the role of IL-6 in tumor biology has been the subject of controversy among scientists.
Of course, this is just an experiment, it has not yet approved the results on those patients and find out what exercise effects have been on metastasis and life expectancy.
"If until now it is difficult to advise people (cancer), anything in relation to the intensity with which they should exercise, our data indicate possible work utility with relatively high intensity to provoke a good release of epinephrine and NK cell involvement" - write the authors of the article.