著者

森 由紀 大村 知子 大森 敏江 木岡 悦子

出版者

社団法人日本家政学会

雑誌

日本家政学会誌 (ISSN:09135227)

巻号頁・発行日

vol.50, no.9, pp.949-958, 1999-09-15

被引用文献数

3

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We made a study of the on-the-back carrying system for primary school children as part of our series of studies on age-related practices and physical effects of carrying methods. In our previous report, we referred to the advantage of free-hand carrying for aged persons. We investigated school bags at 30 primary schools in the Kinki and Tokai districts, using 2,945 children as subjects. It was determined that the stiff bag Randoseru is the most popular among first graders, while the higher the grade, the less the Randoseru is used. In addition, we found that the lower the grade, the bigger the ratio of burden weight to body weight. We selected six subjects from among lower gladers to measure burden pressure upon their shoulder center and lumbar vertebra while carrying a fixed-weight-contained Randoseru, either in standing or walking position. As a result, they showed forward-inclined posture, the inclination increasing with the adding of Randoseru weight. Hereby, we bring to light the necessity of reducing the school goods that children carry daily between home and school to only those which are essential in order for these growing children to keep constant upright postures.