The purpose of this study was to verify a psychological stress model under a hypothesis that troubles in daily life become stressors, through the relation between the control of“consciousness control function”and the regulation of“autonomic nerveous system”, and raise on psychological stress.
The subjects were 105 junior high school students. In this research, the life-style, the autonomic nervors function, the consciousness contorol funcution, the psychological stress were investigated by a questionnaire method. These investigations were carried out from September 25 to October 12,2001.
About the relationship between the autonomic nervous system and the psychological stress reaction, the stress reaction appeared as the sympathicotonia or the unbalance of the autonomic nervous system by a trouble of interpersonal relationship. The high significant correlation was admitted between the sympaticotonia and the negative reaction of“emotion”or“thought”. It was suggested that the unbalance of the autonomic nervous system was related to“emotion”,“will”,“thought”and“characteristic to other people”, too.
In addition, it was cleared that the troubles in life acted on“co nsciousness control function”, and then caused psychological stress reaction.

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The low back pain occurred highly among the teachers of the schools for weak or handicapped children. It must be corresponded as one of the diseases related to work. This time, comparative study was done about the job background factors of the low back pain among the teachers who worked for the school for weak children, the clerical work members and the school orderly members.
93% of the teachers had past history of the low back pain,66%in the clerical members, and 57%in the orderly workers. The appearance rate of the disease in the teacher was extremely high. In the teachers, the disease appeared as the lumbar vertebra sprain, so-called Gikkuri-goshi, by the work demanded for forced postures such as the halfsitting posture, the bending posture or holding children. After getting the disease they had gone to the hospital, tried to train themselves and changed their work methods or steps for preventing it.
It seemed that these results must be enhanced to their work hygiene education, when they leave their new assignment, because they got the low back pain within a year after the new assignment.

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Bone densities of Japanese college students and Chinese students studying in Japan were measured from the year of 2000 to 2002. Obtained results were as follows,
1. The average bone density of Chinese students was lower than that of Japanese.
2. Although the bone density of Japanese students remained same durin g their school life, the bone density of Chinese students raised to the average value of Japanese students.
3. The walking distance in daily life of Chinese students we re higher than that of Japanese students.
Above all, we concluded that bone density could be increased in college life and the propagatio n of gaining a bone density through measuring should affect life style of collage students as high walking distance in daily life. We can also conclude the importance of the“bone density”education through measuring a bone density.

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