Body weight ( Berat Badan ) & Ideal body weight (Berat badan ideal)

From Wikipedia, the free encyclopedia

The term body weight is used colloquially and in the biological and medical sciences to refer to a person's mass or weight. Body weight is measured in kilograms, a measure of mass, throughout the world, although in some countries such as the United States it is measured in pounds, or as in the United Kingdom, stones and pounds. Most hospitals, even in the United States, now use kilograms for calculations, but use kilograms and pounds together for other purposes. Strictly speaking, the body weight is the weight of the person without any items on, but practically body weight is taken with clothes on but often without the shoes and heavy accessories like mobile phones and wallets. Body weight is one way of determining a person's health.

While the terms mass and weight are often used interchangeably in the context of body weight, they actually refer to separate but related concepts in physics. Mass is a measure of an object's inertia and is independent of the effects of gravity, while weight is a measure of the force due to gravity. Thus, if a person were to travel from Earth to the Moon, where there is less gravity, their mass would remain unchanged but their weight would decrease.

Ideal body weight

Ideal body weight (IBW) was initially introduced by Devine in 1974 to allow estimation of drug clearances in obese patients; researchers have since shown that the metabolism of certain drugs relate more to IBW than total body weight.^[1] The term was based on the use of insurance data that demonstrated the relative mortality for males and females according to different height–weight combinations. The most common estimation of IBW is by the Devine formula; other models exist and have been noted to give similar results.^[1] Another method of estimating ideal body weight is using the body mass index.

Average weight around the world

By region

Region	Adult population (millions)	Average weight	Overweight population / total population	Source
Africa	535	60.7 kg (133.8 lb)	28.9%	^[2]
Asia	2,815	57.7 kg (127.2 lb)	24.2%	^[2]
Europe	606	70.8 kg (156.1 lb)	55.6%	^[2]
Latin America and the Caribbean	386	67.9 kg (149.7 lb)	57.9%	^[2]
Northern America	263	80.7 kg (177.9 lb)	73.9%	^[2]
Oceania	24	74.1 kg (163.4 lb)	63.3%	^[2]
World	4,630	62.0 kg (136.7 lb)	34.7%	^[2]

By country

Country	Average male weight	Average female weight	Sample population / age range	Methodology	Year	Source
Brazil	72.7 kg (160.3 lb)	62.5 kg (137.8 lb)	20–74	Measured	2008–2009	^[3]
Canada	80.3 kg (177 lb)			Measured		^[4]
Chile	77.3 kg (170.4 lb)	67.5 kg (148.8 lb)	15+	Measured	2009–2010	^[5]
Finland	82.1 kg (181 lb)			Measured		^[4]
Germany	82.4 kg (181.7 lb)	67.5 kg (148.8 lb)	18+	Measured	2005	^[6]
South Korea	68.6 kg (151.2 lb)	56.5 kg (124.6 lb)	18+	Measured	2007	^[7]
Sweden	81.9 kg (180.6 lb)	66.7 kg (147.0 lb)	16–84	Measured	2003-2004	^[8]
UK – Wales	84.0 kg (185.2 lb)	69.0 kg (152.1 lb)	16+	Measured	2009	^[9]
United States	88.3 kg (194.7 lb)	74.7 kg (164.7 lb)	20+	Measured	2003-2006	^[10]