著者

大澤 清二 下田 敦子 タン ナイン

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2021, no.90, pp.1-10, 2021 (Released:2021-07-02)

参考文献数

10

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The existence of adolescent growth spurts (PHV, Peak Height Velocity) has long been the norm for human height growth theory. However, according to Ohsawa's report, the hunter-gatherer Mlaburi, who lived in the forests of Thailand and Laos, did not see the adolescent growth spurt of their stature. The study reexamined this issue from growth data for the hunter-gatherer Salone (Moken) living in the Andaman Waters of Myanmar. As a result, similar to Mlabri, the adolescent growth spurt (PHV) could not be observed in Salone. The growth period of Salone was very long, and stature continued to grow to nearly 20 years of age.

著者

下田 敦子 大澤 清二 タン ナイン ジョ ネイ

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2018, no.81, pp.10-20, 2018 (Released:2019-01-18)

参考文献数

9

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Current of 21st century, in Demawso area, Kayah state, Myanmar, there are living Kayan women, so-called “Long neck tribes”. They go through their daily life wearing long neck rings and ankle rings for their entire lives.In this research, we investigate the influence on growth shape wearing neck ring. We compare women group who wear neck rings (wearer group) with group who do not wear neck rings (non-wearer group) in Demawso area, Kayah state. The result are as follows, comparing the neck length of both groups in each age group.1. Wearing neck ring begins from childhood, and it continues all through their lives.2. There is no wearing influence from childhood to early part of adolescent period.3. It starts to appear the influence of wearing neck ring from “age 11 to under 15 age group”, which we call it early part of adolescent period.4. From “age 21 to under 30 age group”, the difference between two groups have increased tremendously. The value t shows t0=2.703. We observe the significant difference of average value between the two groups.5. From 30's onward, statistic significant difference could be detected in both groups.6. In “Over age 60's”, neck length of “wearing group” is 12.18 cm. It is the longest length among all the age group. Neck length of “no-wearing group” is 7.65 cm, and the gap between “wearing group” and “non-wearing group” is 4.53 cm, and this gap is the biggest in all age group.7. When height reaches the 140 cm at the early part of adolescent period, they wear much extended neck rings, and it will make big influence to growth & form afterward.Considering the results mentioned above, we have investigated the influence on growth wearing neck ring in each age group. Wearing neck ring has big influence on the shape of women neck. In the near future, our research could be the valuable evidence for judging the matter of wearing neck ring.