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論文(リポジトリ)

論文(リポジトリ)
Kawasaki, Katsushige ; Matsuyama, Junko ; Taguchi, Yo ; Mitomi, Tomoe
出版情報: Pediatric Dental Journal.  20  pp.22-27,  2010-03.  Japanese Society of Pediatric Dentistry
本文リンク: http://hdl.handle.net/10191/17646
概要: It has been reported that individual adults generally take consistently sized bites when eating the same food, while children do not. The present cross-sectional analysis was performed on 60 children and 20 adults to ascertain the age-related changes in the fluctuation in bite size and in the number of chews per bite. The subjects comprised four age groups (5-, 8-, and 11-year-old children and adults), with each group consisting of 10 males and 10 females. The subjects were instructed to take a bite of each of four test foods (bread, sausage, apple and rice), and they were allowed to chew and swallow as usual. After each bite, the remaining food was weighed to calculate the bite size. The fluctuations in bite size and in the number of chews were analyzed using coefficients of variation. The fluctuations in both bite size and the number of chews decreased with age, so that the 11-year-olds showed almost the same values as adults. The present results suggested that the physiological functions related to recognizing and consuming foods mature during early adolescence, when almost al1 permanent teeth have erupted. The present findings also indicated that the fluctuation in bite size might be an indicator of the maturation of masticatory function in children. 続きを見る
2.

論文(リポジトリ)

論文(リポジトリ)
Yagi, Kazuko ; Matsuyama, Junko ; Mitomi, Tomoe ; Taguchi, Yo ; Noda, Tadashi
出版情報: Pediatric Dental Journal.  16  pp.17-22,  2006.  Japanese Society of Pediatric Dentistry
本文リンク: http://hdl.handle.net/10191/4938
概要: For effective mastication and swallowing, to take optimum mouthful food regularly is necessary. The purpose of this study is to compare the weights and the variance of a mouthful food between children and adults. We studied mouthful weight and the coefficient variation in 5-year-old children (n=10), 8-year-old children (n=10) and adults (n=10) while they were eating rice, bread, sausage and apple on two different days. The test foods were served in random order 2-4 hours after lunch. Each portion was weighed before and after each bite to measure the mouthful weight, and the weight of the last bite of each portion was eliminated from the data. The mean weight and coefficient variation in each subject were calculated. The results showed the mean weight was largest in the adults, intermediate in the 8-year-old children, and smallest in the 5-year-old children for all test foods (ANOVA). Moreover, the mean coefficient variation among the weights of the groups revealed that mouthful weight within an individual varied most widely in the 5-year-old children and most narrowly in the adults, and that 8-year-old children could show the same coefficient variation of mouthful weight as adults in rice and apple (Steel-Dwass test). Our results suggest that mouthful weight becomes larger and more regularly with age. 続きを見る