Changes in heart rate of rats subjected to treadmill training. Bulletin of experimental biology and medicine [Bull Exp Biol Med] Journal article

The mechanisms of extracardiac regulation of heart rate were studied in rats subjected to muscle training on a treadmill with different slope angle (0 degrees , 5.5 degrees up, and 5.5 degrees down). Muscle training on a treadmill sloping down was optimal for the development of training bradycardia in 70-day-old rats.

Bulletin of experimental biology and medicine [Bull Exp Biol Med]