Scientists have taped narcotic dependence on physical e ...

The American scientists have found out, that the excessive addicting for sports exercises can cause the physical dependence similar with heroin.
In experiment on rats introduction of the preparation causing a withdrawal at opioid narcomaniacs, to animals after long run in a wheel led to development of a similar syndrome, informs PhysOrg.

The greatest similarity to a narcomania was revealed at "an athletic anorexia" - conditions at which excessive exercises (as a rule, begun for the purpose of weight reduction) become uncontrollable requirement which is combined with sharply lowered appetite that leads serious, frequently to lethal attrition.

Researchers from University Taftsa in Massachusetts have placed 44 males and 40 females of laboratory rats in conditions where they could run on a choice in a wheel or neglect physical activity. In some weeks of observation of animals have parted on two groups: "active", strenuously engaged in run, and "inactive", preferring to have a rest.
For simulation of "an athletic anorexia" each group of animals have parted on two parts - one got access to nutrition within one hour per day, another could eat beyond all bounds.

After a while an animal from all four groups have entered naltrexone - the antagonist opioid receptors which causes "breaking" in the narcomaniacs dependent on heroin, Morphinum and similar substances.

In reply to introduction of a preparation at "active" rats the typical withdrawal has developed: they shivered, coiled and gnashed a teeth. The most expressed symptoms were observed at the animals running more of others at lowered consumption of nutrition. Reaction of "inactive" rats to introduction naltrexone without dependence from a diet was insignificant.

According to the principal of research Robin Kanareka, excessive exercises lead to the raised development in a brain of "pleasure mediators" - endorphines and Dofaminum that corresponds to biochemical changes at the use opioid narcotics.

Scientists hope, that the results received by them can be applied "in the opposite direction" - to working out of methods of aftertreatment of narcomaniacs by means of exercise stresses.

Drug Search