The purpose of this study was to attain information about body proportion changes in Japanese girls. The data are collected from annual health examination surveys conducted under the supervision of school health care teachers. A longitudinal data set spanning from the first grade of elementary school (6.5 years of age) through the 3rd grade of high school (17.5 years of age) was extracted from serial surveys. A total of 306 female subjects were observed for 12 consecutive years. A body proportion chart (BPC) containing the scales for stature, sitting height, lower limb length and lower body-upper body segment ratio (LUR＝lower limb length×100/sitting height) in a single graph was developed. The sitting height and lower limb length were graphed on the chart, where the sitting height is the x-axis and the lower limb length is the y-axis.

　In the chart, the growth curve transited slightly convexly, indicating that the LUR constantly increased from 6.5 years to the terminal stage of the peak height velocity. The large increment rate of the height is recognized to be between 9.5 and 11.5 years of age. After 13.5 years, the increment rate of the sitting height and leg length is diminished and the plots in the chart are clustered close together. The maximum values of the LUR were attained between 11.5 and 14.5 years of age (85.4 - 85.7).

　The periods when the LUR attained peak value are coincident to the terminal stage of the peak height velocity. During two years of the peak height velocity (from 9.5 to 11.5 years of age), the sitting height and lower limb length quickly grew, suggesting that these two variables commonly contributed to the growth spurt in height although the lower limb length was slightly dominant.

　After attaining the maximum value of the LUR, the growth of the lower limb length stagnated although the sitting height still increased. Consequently, the LUR starts to decrease after 13.5 years of age.

　The main purpose of this study was to examine the hypothesis 1) that “students with higher resiliency, social support and life skills are less likely to be bullied, more likely to cope with bullying effectively, and less likely to suffer negative effects”and the hypothesis 2) that “resiliency, social support, and life skills show positive correlations with each other”.

　The study sample was comprised of 619 students in the seventh to the ninth grade from one public junior high school in Niigata city. The data were collected in June 2009, using anonymous and self-administered questionnaires. Valid responses were obtained from 583 students.

　The main results were as follows.

1) Twenty-six percent of the subjects reported that they had been bullied a few times a month or once or more a week in the past year. The percentage of girls who had stayed away from school was 10％ and was higher than that of boys (3％). As for “coping strategies for being bullied”, girls tended to choose a passive or asking-for-help type, while boys tended to choose an aggressive or assertive type.

2) The students who had never been bullied in the past year showed significantly higher scores on measures of resiliency, social support, self-esteem, pro-social skills (boys) and goal-setting skills (boys), and lower scores on measures of negative social skills and emotion-focused coping strategies than the students who had experienced various types of bullying in the past year.

3) The students who had experienced less negative effects of being bullied showed significantly higher scores on measures of resiliency, social support (girls), self-esteem (boys), and problem-focused coping strategies (girls), and lower scores on measures of emotion-focused coping strategies (boys) than the students who had experienced more negative effects of being bullied.

4) The students who chose “asking-for-help” type of coping, showed higher scores on measures of resiliency (girls), social support, problem-focused coping strategies (boys), decision-making skills (boys), and goal-setting skills (girls).

5) Many significant partial correlations were found between life skills scales and resiliency scales, and between life skills scales and social support scales, whereas there were few significant partial correlations between resiliency scales and social support scales.

　Overall, the results of this study suggest that hypothesis 1 and hypothesis 2 are valid, except for the relationship between resiliency and social support.

　The results obtained from this study support the rationale of the idea that activities to enhance student's resiliency, social support, and life skills should be introduced into a comprehensive school bullying prevention program in Japan.

　The main purpose of this study was to investigate the relationship between emotion-focused coping and depression for senior high school students. The participants were 713 students. They completed a battery of questionnaires that contained the dispositional version of the Emotional Coping Questionnaire to measure ways of expressing anger and depressive emotions for emotion-focused coping, and the Center for Epidemiologic Studies Depression Scale for depression. The hierarchical multiple regression analyses of the data showed that emotional expression to oneself caused depression in men and women. Moreover, the significant interaction between expressions of depressive emotions to others and oneself were obtained for girls. Post-hoc tests for the interaction showed that higher expression to others was associated with lower depression for girls, especially when expression to oneself is lower. Differences in findings between senior high school and university students are discussed.

There are many students and pupils who bring dinking water, such as water and tea which are bottled in their own water bottle at home, to the school. Since its hygiene was concerned, our last research was carried on the situation of the bacterial contaminations of those bottled waters. Then it has been found that there were serious bacterial contamination situations of those bottled water, which had made us continue the research to get more certain findings.

The results of this continuous research could make it more certain that the high level of the bacterial contamination in those bottled waters does exist. To compare to the drinking water quality standards of the water supply, more than 90% of those bottled waters were found to be incongruent, besides the contamination with Escherichia coli. The levels of the bacterial contamination found were higher in the raining season than the fall.

In this research, to investigate the cause of the bacterial contamination, some of the dinking water before bottled were collected separately to sterilized containers at the same time they were poured into the water bottle at home. As a result, the levels of the bacterial contamination of the bottled water were higher than the water which were collected separately, and it was suggested that the bacterial contamination was likely be generated by putting in the water bottle.

　The purpose of this study was to examine the relationships of past test experience with a physical fitness score which was measured by a national survey of children (elementary school and junior high school students) in 2008. National survey data in each prefecture, related to the physical fitness score (V1: 2008 data), the test experience (V2: 2007 data), and rate of school children in remote areas (V3: 2008 data) which was published by Ministry of Education, Culture, Sports, Science and Technology in 2007 & 2008 were used for this study. Semi-partial correlation coefficients of V2 with the residuals of V1 that had been predicted by V3 were calculated for each gender and age. There were moderate correlations (r=0.547―0.736) between the physical fitness score and the test experience for each age and gender. The highest correlations (|r|=0.743― 0.810) were when the rate for test experience was under 80% (elementary school) or under 90% (junior high school). Meanwhile, the lowest correlations (|r|=0.042―0.122) were when the rate for test experience was over 90% (elementary school) or over 95% (junior high school). These findings suggest that test experience is related to the physical fitness score of the national survey in 2008. Meanwhile, in cases when the rate for test experience is over 90% (elementary school) or over 95% (junior high school), the test experience might be almost unrelated to the physical fitness score in the 2008 national survey.

　A questionnaire survey was conducted among 913 high school students in order to investigate the relationship between their life style (their health awareness and their exposure to IT equipment) and subjective symptoms, and tendency of depression. Results showed that life style of high school students is related to their subjective symptoms and tendency of depression. For better quality of life of high school students, it would be useful to give them concrete advice on how to build better life habits about keeping good sleep, optimal physical activities, regular meal and intestinal function, and appropriate use of mobile phones.

　The objectives of this study were to identify experiences of children and their parents who attended a sex education class, to review the past activities and to examine future programs. Participants were 138 children and 69 parents who participated in the class from three primary schools in Tokyo. We conducted content analysis through an anonymous self-report questionnaire after the class. As for the results, children reported “recognition of the value of life," “recognition of the inter-connectedness in life," “interest in birth of a life and questions arising from it," and “expansion of interaction with others through class participation," while their parents reported “recognition of their role in conveying the meaning of life to children," “renewed recognition of the connectedness of children and parents," and “shared time with children". These findings suggest the importance of the timing and frequency of class evaluations. Also, the current activities will be further improved through collaboration among schools, communities and families.

　The purpose of this study is to examine the relationship between Feeling of Cumulative Fatigue (FCF) and lifestyle factors from the viewpoint of health education at school. The subjects of the analysis are 931 (469 males and 462 females) high-school students in Okayama prefecture. The survey was conducted in April, 2009. The main results were as follows:

1) The average number of FCF score was 66.1 for total, 65.3 for males and 66.9 for females. There was no significance between males and females.

2) Among the 15 lifestyle factors, there was a significant difference between males and females in such factors as awakening time, time of sleep, computer and game time, learning time in home, exercise and sport, snack, juice and bowel movement.

3) For males, bed time, time of sleep, time to onset of sleep, snoozing during class, computer and game time, learning time in home and snack were influential to FCF score. For females, on the other hand, bed time, time of sleep, time to onset of sleep, snoozing during class, exercise and sport, and bowel movement were influential to FCF score.

　The following conclusion can be drawn from the above results: 1) Subjective symptoms about Feeling of Cumulative Fatigue for high-school students is likely to reflect life styles of students. 2) Subjective symptoms about Feeling of Cumulative Fatigue can be considered of value as health index in order to promote health education in school.