Action of some pituitary hormones on the work capacity in rats.

FSH (50 mu/rat X 12 days), ICSH (in the same dosis) and gonadotropinum sericum (20 U/rat X 13 days) have a prevailing inhibitory influence on the motor activity in untrained or/and trained rats. TSH raises the motor performance but significantly only in great doses (1.5 IU/100g body weight X 13 days).