A questionnaire survey was conducted among 648 junior high school students in order to investigate the relationship between their life style (their impression of their general health and the use of IT equipment) and their academic records. Results showed students who participated in club activities more than three times a week, attended cram schools, or had regular eating habits, enjoyed their school life, had better academic records. The long-time use of audio-visuals or mobile phones made their scores lower. Female students were more likely to report a lower impression of their general health than male students. Female students who claimed they had a lower impression of their general health had significantly lower academic records. This implies that appropriate advice on life style is important for junior high school students.

　A self-administered questionnaire was administered to mothers of Prader-Willi syndrome (PWS) children attending school. The questionnaire consisted of demographic data(PWS children school attendance situation, PWS characteristics, schools'understanding, etc.) ; the WHO QOL26, which assesses mothers'quality of life(QOL) ; and the Japanese version I of the Feetham Family Functioning Survey(FFFS). Ninety-two valid responses were analyzed.

　The occurrence frequency of PWS children's physical conditions and maladaptive behaviors was significantly higher among students in schools for special needs education than among those in regular schools, and the percentage of PWS children in schools for special needs education showed a significant increase from elementary school to middle school to high school. It is presumed that the worsening of PWS symptoms is one reason for children's transfer from regular schools to schools for special needs education.

　As for schools' understanding, because understanding of bullying was significantly lower at regular schools than at schools for special needs education, raising understanding of PWS stands out as a challenge for regular schools.

　There was a significant and moderate correlation between mothers' QOL and family functioning, and both were lower than those of the general population. These findings suggest that the mother and the whole family require support. When family functioning is segmented by area, a significant and moderate correlation was observed between mothers' QOL and family functioning in subsystems (systems outside th family closely related to it). It is considered that the enhancement of help and peer support from friends, relatives, and other subsystems is related to mothers'QOL.

　The purpose of this research was to investigate immunization state of measles or rubella in the students of university of education. This study involved 1250 first year students (524 men and 726 women) of the undergraduate and graduate schools who entered from 2003 to 2007 at Naruto University of Education. The subjects' ages ranged from 18 to 58. Measles antibody was measured in both male and female students in contrast to the rubella antibody in only female students. Past history of infection and vaccination was asked in paper questionnaire. These students signed an agreement regarding their participation. In 2003, the susceptibility of contracting measles was measured by the serum antibody titer using HI method (hemagglutination inhibition test), and it was measured by the HI method plus the IgG antibody examination by EIA (Enzyme-linked Immunosorbent Assay) in the undergraduate students from 2004 to 2007.

　The results surprisingly showed that a high antibody negative rate exists in 36.7% out of 1250 students by the HI method and it increased in the younger generations. The antibody negative rate in EIA method was as high as 8.9% in the 653 students. Above all, negative rate showed the highest score of 21.9% in 1987th birth group. This may account for the beginning of increase of the adolescence without measles antibody.

　The antibody of rubella was measured by the HI method, which showed a 6.3% of negative rate in all 602 female students. The ratio of the students with negative rubella antibody was correlated with the percentage of the students who had not received rubella vaccination. There was no difference in antibody negative rate between generations.

　As it has been thought that people had a lifelong immunity if they contacted measles or rubella once (or had the vaccination), no attention have been paid to the dangers of these childhood infectious diseases. However, the results of this study in addition to the recent prevalence of childhood infectious disease in adults or adolescence indicate that it is necessary to periodically check antibody levels since school is a group environment where infection could spread easily.

　The purpose of this study is to obtain basic data on health education at schools in China. By choosing the first graders of junior high schools in Suzhou and Okayama City as subjects, the authors have surveyed health awareness, knowledge, attitude, and subjective symptoms, in relation with respective life style, and have obtained the results. In addition, interrelations of these have also been examined. The number of subjects for analyses was 443 students in Suzhou and 465 Okayama. The survey was conducted in June 2006.

　The outline of the results is as follows：

　With the comparison of life style, there are differences in many items such as time cycle of daily life, exercise and dietary habit. In Suzhou, compared with Okayama, more students go to bed earlier and get up earlier. There were, however, more students who do not exercise and skip meals. As for food intake, more students there eat vegetables, fruit, bean products, seaweeds and potatoes, and the score of their variety of food intake is higher. Also differences are recognized health awareness, knowledge, attitude, and subjective symptoms. In Suzhou, health awareness is generally higher, but its knowledge lower. Health attitude in regard to sleeping hours is higher, but with exercise and breakfast it is lower. A high frequency of complaints of subjective symptoms is marked, but less students complain of drowsiness.

　In Suzhou, students with greater health knowledge tend to have better health attitude and awareness. They tend to show lower complaint rate of subjective symptoms. In both of Suzhou and Okayama, students with good health attitude and awareness, and with less subjective symptoms can be found mostly among students keeping early hours, with exercise, better eating habit, and high score of food intake variety. Little correlation is to be found between health knowledge and life style habits.

　From these findings, it has been clarified that in school health education in China, higher health awareness and practicing healthy life style, fostering health attitude are highly recommended. It has also been recognized that improving knowledge and attitude on life style is expected to improve quality of life with junior high students. It is acknowledged that the improvement in this regard helps them practice healthy life style, enhance awareness, thus it results in reducing subjective symptoms.

　The present study investigates the relationship between menstrual cycle regularity and body fat as well as physical characteristics among 23 female middle and long-distance runners who were college students.

　The results were as follows：

1) The body fat ratio ranged from 5.0% to 25.9% (mean, 14.4%).

2) The mean age of menarche among the runners was 13.1 years, which was evidently later than that of non-athletes.

3) About 60% of the runners had started training before the onset of menarche.

Irregularities in the length of the menstrual cycle were as follows:

1) The proportion of those who experienced menstrual irregularity was 47.8%.

2) Stature, age at menarche, running distances for one month, experience as a runner and athletic level did not significantly differ between the groups with regular and irregular menstrual-cycles.

3) Runners with an irregular cycle had significantly less body fat than those with a regular cycle.

4) The abnormal rate of the menstrual cycle tended to increase with decreasing body fat. An irregular cycle or amenorrhea was not evident in any runners with a body fat ratio of 20% or more, but was evident in all runners with ≦10.0% body fat.

5) Body fat negatively correlated with running distance for one month.

　These results suggest that the higher proportion of menstrual irregularities among middle and long-distance runners with low body fat is due to decreasing body fat together with longer distances run over a period of one month.