Studies on Changes in the Blood Components after Hard Exercise and Their Significances

Abstract

With a view to finding out the physiological significance of the changes in blood components after hard exercise, a series of expeiments were conducted using rabbit as subjects. The rabbits were made to run (40-60 metres per minute, for 5 minutes) on the hand-driven treadmill. The results obtained were as follows: 1) The change in the amount of the blood components just after the exercise ran counter to the change in the blood water. The amount of the blood water was not very significant in this case, but the concentrated blood coming from the spleen had perhaps a greater effect upon the changes in the blood components. 2) The blood corpuscles showed clearly a decrease at 30 minutes after the exercise, but the hemoglobin did not show such a decrease, and at the same time, the average diameetr of red blood cells was increased the blood corpuscle water Showed an increase and the potassium in the serum showed a remakable increase, From these, it is inferred that the metabolism and the destruction of the red blood cells were increased by the hard exercise. 3) It is considered that the blood plasma protein which showed a remarkable increase just after the exercise was affected by the decrease of the blood plasma water, and it may also be considered that the concentrated blood plasma from the blood reservation organ contributed to the increase of the blood plasma protein. 4) The changes in A/G ratio of the blood serum protein did not show any definite tendency. At 30 minutes after exercise, the blood serum albumin showed an increase and the blood serum globulin showed a decrease. The change in the α-globulin showed a similar tendency to the total globulin in the serum. The β-globulin showed a remarkable decrease, and the γ-globulin showed a remarkable increase from 10 minutes after the exercise.