Exposure effects of static magnetic field on some physiological parameters of developing rats

Effect of long term exposure of static magnetic field on developing rats is investigated. The animals of either sex were subjected to a field of 1 kg for 120 days after attaining 28 days of their ages. The parameters included for observations were electrocardiogram, motor activity, and organ weights. The electrocardiogram of the experimental animals shows a higher amplitude of R and T waves, lengthening of QT interval and a slowing down of heart rate. The survival time of the two categories of animals was not significantly different. The weights of brain, skull and ovaries found to be significantly less in experimental group, while the motor activity of the corresponding group registered an increase. It is concluded that these are the stressor effects caused due to long duration of exposure to the magnetic field.