Some Findings on the Physical Status and Body Types in Japanese Viewed from the "Report of the Survey on the Physical Status in Japanese"
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概要
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The nation-wide survey on the physical status in Japanese was made in 1978-1981 by the Agency of Industrial Science and Technology in the Ministry of International Trade and Industry Japan. Subjects consisted of more than 46, 000 men and women aged 4 months to 60 years and the measurements comprised more than 30 items. A report of the survey, basic statistics only, was published (limited edition) in 1984 through Nihon Kikaku Kyokai (Japanese Association of Standardization), Akasaka, Tokyo. In the present paper, the author, an executive member of the survey, intended to show several features of the up-to-date physical status and body types of the Japanese within the limit of the data published, i. e. mean values and standard deviations. For secular analysis, the present data was compared with the data reported 10 years ago by the same Agency (similar scale survey).1. Sexual differences in body types begin to appear at about 3 years of the age in such a way as "miniature" of adult proportions, except for the lower limb length which is relatively longer in girls before puberty than in boys, notwithstanding markedly longer in males throughout adulthood.2. Secular improvement of the physical status in children is hardly verified when the data is re-analysed from the standpoint of secular acceleration in growth and maturation. For instance, chest development (chest girth) is considered being apt to change for the worse, and some parts of the body (waist, upper arm, thigh) show a sign of inclination for obesity. 3. Subcutaneous fat thickness of adult female Japanese decreases markedly during these 10 years. However, the author is convinced that this decrease may be brought about not by the substantial secular change, but by the change of their life custom, i. e. eagerness for the thinner has resulted in development of varied trials, e. g. yoga, aerobics, etc. and of many kinds of devices, so-called "health apparatus ".4. The age change proper in the adulthood period after excluding secular component may become manifest when the present data will be compared with the data reported 10 years ago in such a way that 40-years group of the former will be compared with 30-years group of the latter, and so on. These findings are invaluable because the longitudinal follow-up of the adult and aged is extremely difficult to complete. Three patterns of the age change are found: 1) Stature, limb lengths and body widths decrease bit by bit with advancing age. 2) Weight and body girths (chest, waist, abdomen) increase gradually until 60 years of the age. 3) Girths of hip, arm and thigh increase up to the period of 40-50 years, then turn to the decrease.
- 日本人類学会の論文
日本人類学会 | 論文
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