The necessity of medical and scientific study for sports is increased as various sports are generalized. As we have already reported, "sports myopathy" has been identified in boy students of the public high school, who belong to sports clubs. In this report, we attempted to clarify if there exists "sports myopathy" in boy students of the private high school, too, who are supposed to be exposed to harder exercise.
　As the results, higher incidence of traumatic hemolysis and higher levels of serum CPK, ALD-A and myoglobinemia which may be related to muscle damage by sports were observed in this group than in the public high school students studied before. Therefore, the exercise in the students of the private high school appeared to be over-loaded in comparison with those in the public high school.
　From the results of this examination and the iron deficiency state confirmed in this study, it is suggested that boy students of high school, especially in the sports-elite high school, are in "sports-myopathic state" and also in iron deficiency.
　Since these may influence upon their school life, some treatments, cares for their nutrition and management for training schedule are necessary for them.

DESCENTE SPORTS SCIENCE Vol.9/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE