Human bipedalism and body-mass index

Abstract Body-mass index, abbreviated as BMI and given by M/H 2 with the mass M and the height H, has been widely used as a useful proxy to measure a general health status of a human individual. We generalise BMI in the form of M/H p and pursue to answer the question of the value of p for population...

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Autores principales:	Su Do Yi, Jae Dong Noh, Petter Minnhagen, Mi-Young Song, Tae-Soo Chon, Beom Jun Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b735c2ad5cc74660be60a90360d88804
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spelling	oai:doaj.org-article:b735c2ad5cc74660be60a90360d888042021-12-02T11:52:59ZHuman bipedalism and body-mass index10.1038/s41598-017-03961-w2045-2322https://doaj.org/article/b735c2ad5cc74660be60a90360d888042017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03961-whttps://doaj.org/toc/2045-2322Abstract Body-mass index, abbreviated as BMI and given by M/H 2 with the mass M and the height H, has been widely used as a useful proxy to measure a general health status of a human individual. We generalise BMI in the form of M/H p and pursue to answer the question of the value of p for populations of animal species including human. We compare values of p for several different datasets for human populations with the ones obtained for other animal populations of fish, whales, and land mammals. All animal populations but humans analyzed in our work are shown to have p ≈ 3 unanimously. In contrast, human populations are different: As young infants grow to become toddlers and keep growing, the sudden change of p is observed at about one year after birth. Infants younger than one year old exhibit significantly larger value of p than two, while children between one and five years old show p ≈ 2, sharply different from other animal species. The observation implies the importance of the upright posture of human individuals. We also propose a simple mechanical model for a human body and suggest that standing and walking upright should put a clear division between bipedal human (p ≈ 2) and other animals (p ≈ 3).Su Do YiJae Dong NohPetter MinnhagenMi-Young SongTae-Soo ChonBeom Jun KimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Su Do Yi Jae Dong Noh Petter Minnhagen Mi-Young Song Tae-Soo Chon Beom Jun Kim Human bipedalism and body-mass index
description	Abstract Body-mass index, abbreviated as BMI and given by M/H 2 with the mass M and the height H, has been widely used as a useful proxy to measure a general health status of a human individual. We generalise BMI in the form of M/H p and pursue to answer the question of the value of p for populations of animal species including human. We compare values of p for several different datasets for human populations with the ones obtained for other animal populations of fish, whales, and land mammals. All animal populations but humans analyzed in our work are shown to have p ≈ 3 unanimously. In contrast, human populations are different: As young infants grow to become toddlers and keep growing, the sudden change of p is observed at about one year after birth. Infants younger than one year old exhibit significantly larger value of p than two, while children between one and five years old show p ≈ 2, sharply different from other animal species. The observation implies the importance of the upright posture of human individuals. We also propose a simple mechanical model for a human body and suggest that standing and walking upright should put a clear division between bipedal human (p ≈ 2) and other animals (p ≈ 3).
format	article
author	Su Do Yi Jae Dong Noh Petter Minnhagen Mi-Young Song Tae-Soo Chon Beom Jun Kim
author_facet	Su Do Yi Jae Dong Noh Petter Minnhagen Mi-Young Song Tae-Soo Chon Beom Jun Kim
author_sort	Su Do Yi
title	Human bipedalism and body-mass index
title_short	Human bipedalism and body-mass index
title_full	Human bipedalism and body-mass index
title_fullStr	Human bipedalism and body-mass index
title_full_unstemmed	Human bipedalism and body-mass index
title_sort	human bipedalism and body-mass index
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/b735c2ad5cc74660be60a90360d88804
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Human bipedalism and body-mass index

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