This paper is concerned with the results of a survey of thousands of school children, who live in two districts that are geographically distant from each other and contract sharply in their environmental conditions, family history, and sports history. Our intention is to elucidate regional differences in the incidence and cause of motion sickness. The subjects were 861 pupils living in a secluded mountain area of Totsukawa Village, Nara Prefecture, and 6, 017 pupils in a large industrialized city of Amagasaki, Hyogo Prefecture.
The incidence of any history of motion sickness was 69.5% in Totsukawa Village and 63.6 in Amagasaki City. Pupils suffering from habitual motion sickness accounted for 5.4% and 8.1%, respectively, of the subjects. The causes of motion sickness classified by various traffic facilities were as follows. Pupils whose motion sickness was due to cars and buses were as much as about four-fifths of those who had experienced this disorder. This rate was common to the two areas. Meanwhile, pupils whose sickness was due to other traffic facilities including trains, ships and airplanes were far fewer, particularly in Totsugawa Village, where few people have access to these vehicles.The overt difference in the incidence of motion sickness between the two areas was shown to depend on regional differences in environmental conditions accessibility to individual traffic facilities, and meaning not immediately clear the pupils health problems derived from or influenced by their physical activities, as well as on the susceptibility of individual pupils.
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