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Body volume index


The Body Volume Index (BVI) is a new measurement for obesity, proposed as an alternative and enhancement to the body mass index (BMI).

People of different age, gender or ethnicity will have different body shapes, with different weight distribution and recent studies have highlighted the limitations of BMI as an indicator of individual health risk.

BVI was originally devised in February 2000 and looks at the relationship between mass and volume distribution (i.e. where weight is distributed on the body); a new, modern-day measurement for measuring obesity; an alternative to the BMI, originally conceived between 1830 and 1850.

The data needed to calculate a person's BVI originally relied on data collection from 3D Scanners, equipped with several cameras to capture the dimensions of different parts of a person's body. By December 2016, over 400,000 men, women and children had been measured using this 3D technology, originally developed to measure body circumferences for retail clothing fit. The measurement extraction software has now been configured to develop part volume and body composition measurement for healthcare in 3D.

A 10-year program of research and development has been undertaken; the Body Volume Index uses an algorithm based on MRI data and detailed Body Composition data to make an inference as to the body's distribution of weight and the distribution of muscle and fat.

Based on height and weight, BMI was originally conceived between 1830 and 1850 by a Belgian polymath called Adolphe Quetelet. BMI uses these measurements to determine whether a person is carrying an appropriate amount of weight for an average person of their height. The Body Mass Index or BMI is a measurement that has been used by healthcare professionals to aid diagnosis of obese and under-weight people for many years and has become a standard worldwide for the assessment of risk and for population statistics.

BVI allows for differentiation between people who have been assigned the same BMI rating, but who have a different body shape and weight distribution. Specifically, BVI divides the 3D body image of a person into 7 distinct sections; Chest, Abdomen, Pelvis, Right Arm, Left arm, Right Leg, Left Leg. The Head, Hands and feet are specifically excluded as extra weight or fat in these areas are not considered to be a risk to general health. After primary development, initial validation was undertaken by Heartlands Hospital, an NHS Obesity, Diabetes and Endocrinology Centre in the UK. This was followed by clinical testing in the US by Mayo Clinic in Rochester, Minnesota. Other organisations such as Aston University, University of Hull, the University of Westminster and the Medical Research Council have also been involved in research and development program.



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Wikipedia

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