박계순1,전태원2, 소위영2

울산대학교 자연과학대학 체육학부1, 서울대학교 건강운동과학2

Background Red blood cell plays an important role in the function of transporting, providing oxygen to tissues, releasing CO2 from the body, and protecting cells from hydrogen ions. However, hemolysis caused by exercise may effect anemia, the reduction of hemoglobin, and VO2max. Furthermore, this hemolysis disrupts homeostasis. Previous studies on hemolysis have concentrated mainly on elite athletes and subjects having taken part in high intensity exercise and little is known about the effect of hemolysis from long term exercise. The purpose of this study was to investigate changes to hemolysis when subjected to long term exercise, badminton.
Methods Thirty-five healthy, middle-aged women volunteered for this study and agreed to play badminton for one hour a day at 60∼70% intensity of their Heart Rate Reserve four times per week for 12 weeks. Blood samples were collected pre-exercise, immediately post-exercise, and recovery one hour from the antecubital vein before-training and after-training.
Results Red blood cells, white blood cells, creatine phosphokinase (CPK), and lactate dehydrogenase (LDH) increased significantly; and these changes continued after the 12-week training period. Hemoglobin and hematocrit did not change with each exercise session nor after the 12-week training period. Erythrocyte sedimentation rate (ESR), peripheral blood smear (PBS) morphology, and ammonia increased significantly after a single exercise session. However, these changes were not detected after the 12-week training period.
Conclusions CPK and LDH did not decrease but PBS morphology, ESR, and ammonia did. An increase in the latter three tests are considered to be direct indicators of hemolysis. These results demonstrate that the magnitude of hemolysis was reduced by the 12-weeks of exercise training.

Key words badminton exercise, erythrocyte, hemolysis, anemia