This study has aimed to clarify how much the physical exercise in school age has the influence on aging in later life. The study was done by questionnaire containing 33 questions concerning physical health. The subject were 100 pairs of adult twins whose age were 50 years old and over. This twin cohort was composed of 76 monozygotic pairs and 24 dizygotic pairs. The zygosity diagnosis was done through two questions, "did you look alike peas when you were young?" and "what is your ABO blood type?"
　Several questionnaire items were similar to those of Cornell Medical Index. The study results revealed the following finding.
　1) It has been indicated at the level of significance that the subjects being more active in sports during school age tend to be more active physically in daily life in later adulthood.
　2) It has been indicated at the level of significance that the subjects being able to run faster in school age tend to be more active physically in daily life in later adulthood.
　3) There is no significant relation between the sports activity during school age and the physical symptoms in later adulthood.
　4) Means of age difference concerning the first usage of far-sighted glasses (spectacles for the aged) were longer in dizygotic twins (4.5 years) and shorter in monozygotic twins (3.3 years.) This result indicates that aging of eye sight would be under the influence of genetic factors. At the same time, this result also indicates that environmental factors have influence on aging of eye sight.

DESCENTE SPORTS SCIENCE Vol.8/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE