체육특기자의 폐기능과 운동후 회복기의 혈액가스의 변화

Abstract

The pulmonary function and changes of blood gas tensions and pH in the athletes have been reported but are fragmentary as to require more complete studies including all the pulmonary parameter and blood gas tensions especially at the early part of 20 years of age. This study was aimed to elucidate the pulmonary function at the rest and the changes of venous blood gas tension and pH after the exercise in the athletes of physical education students. The subjects chosen for this study were 15 athletes of physical education students (special group) of 21—25 years of age. The athletes had at least four years of exercise careers, and were compared with 12 non-athletes of physical education students (general group) who had not been subjected to any form of rigorous training program. All the subject were directed to perform running on the treadmi]l for three minutes under the condition of 15% grade and 5 MPH. The venous blood samples were taken at the rest as well as at 0,5,10 and 20 minutes after the exercise to check the changes of Pco2, Po2 and pH during the recovery period. The venous blood Pco2, Poj and pH were determined using the Model 175 Automatic Blood Gas Analyzer by Corning Co., and the pulmonary function using the computerized spirometer. The results obtained were compared with the general group and summarized as follows： The special group exhibited higher values of the pulmonary function except FVC compared with the general group, and particularly FEV0.5% and FEV^ were significantly different.

The venous Po2 was decreased immediately after the exercise, but increased during the recovery period. The special group generally showed higher oxygen partial pressure than the general group. The venous Pco2 in contrast to the oxygen increased immediately after the exercise, but decreased during the recovery period. The special group showed lower carbon dioxide partial pressure. Blood pH was signil icantly decreased from the resting value after the exercise and returned to the resting value at 20 minutes. In the special group, however, the change of pH was less than in the genera! group.