The effect of a traumatic brain injury on changes in the heart rate of rats subject to various modes of motor activity

Bulat Ildarovich Vakhitov*, Ivan Sergeevich Raginov, Vakhitov Ildar Khatybovich Vakhitov, Alena Valerievna Izosimova

Kazan Federal University, Kazan, Russia

ABSTRACT

For the first time, studies have been conducted to study the reaction of animal heart rate to various modes of motor activity after a traumatic brain injury. It was revealed that on the first day after modeling an open head injury in rats of all age groups, a pronounced increase in heart rate was observed. In this case, the smallest heart rate response to brain injury is observed in animals of immature age. It was found that the implementation of systematic dynamic exercises by animals of mature and preschool age after modeling a craniocerebral injury contributes to a significant decrease in heart rate. A more pronounced formation of training bradycardia is observed in immature animals. It was revealed that limiting motor activity and performing isometric exercises after a traumatic brain injury maintain heart rate at an increased level in all age groups of animals and significantly inhibits the natural, age-related decrease in heart rate in immature animals.

Keywords:

Heart rate, Traumatic brain injury, Modes of motor activity, Rat model