空手道の稽古が免疫機能に与える影響

Bulletin
In this study, we measured secretory immunoglobulinA(SIgA) levels in order to investigated the effect of karatedo practice on immune function. Subjects were 7 trained karatedo students, 8 untrained karatedo students, and 5 karatedo instructors. Saliva was collected before (9:00) and after (17:30) practice. SIgA concentrations in saliva were measured by enzyme-linked immunosorbent assay (ELISA). In addition heart rates was monitored during a karate practice. Saliva flow rate did not change after practice in the trained group, but t decreased significantly in the untrained group. SIgA concentration did not differ after practice in the trained group or in the untrained group. SIgA secretion rate was unchanged after practice in the trained group, but decreased significantly in the untrained group. None of these parameters changed in the instructor group. Heart rate showed that the karatedo practice consisted of intermittent moderate- and high-intensity exercise. The instructors performed low-intensity exercise. These results showed that immune function might be suppressed after karatedo practice in a untrained person.