Corpulence index information

The Corpulence Index (CI) (also Ponderal Index (PI) or Rohrer's Index) is a measure of corpulence, or of leanness in other variants, of a person^[1] calculated as a relationship between mass and height.^[2] It was first proposed in 1921 as the "Corpulence measure" by Swiss physician Fritz Rohrer^[3]^[4] and hence is also known as Rohrer's Index.^[5] It is similar to the body mass index, but the mass is normalized with the third power of body height rather than the second power.^[6] In 2015, Sultan Babar showed that CI does not need to be adjusted for height after adolescence.^[4]^[6]

\mathrm {CI} ={\frac {\mathrm {mass} }{\mathrm {height} ^{3}}}

with $\mathrm {mass}$ in kilograms and $\mathrm {height}$ in metres, giving a measure with the same dimensions as density. The corpulence index yields valid results even for very short and very tall persons,^[7] which is a problem with BMI — for example, an ideal body weight for a person 152.4 cm tall (48 kg) will render BMI of 20.7 and CI of 13.6, while for a person 200 cm tall (99 kg), the BMI will be 24.8, very close to the "overweight" threshold of 25, while CI will be 12.4.^[8]

Because of this property, it is most commonly used in pediatrics.^[9]^[10] (For a baby, one can take crown-heel length for the height.^[11]) The normal values for infants are about twice as high as for adults, which is the result of their relatively short legs.^{[citation needed]} It does not need to be adjusted for age after adolescence.^[6] It has also been shown to have a lower false positive rate in athletes.^[12]

The corpulence index is variously defined (the first definition should be preferred due to the use of SI-units kg and m) as follows:

Formula	Units	Values considered normal or typical
Formula	Units	for a 12-month-old infant	beyond infancy
${\text{CI}}={\frac {\mathrm {mass} }{\mathrm {height} ^{3}}}$ ^[9]^[10]	kg/m³	24^[9]	12^[6]
${\text{CI}}={\frac {\mathrm {height} }{\sqrt[{3}]{\mathrm {mass} }}}$ ^[1]^[13]	inch * pound ^-1/3	12.49 to 13.92

^ ^a ^b Foods and Nutrition Encyclopedia, Audrey H. Ensminger, Marion Eugene Ensminger. p. 1645
^ EXSS 323: LAB 1 - BIOMECHANICS TOOLS: Computers, Algebra and Trig Oregon State University
^ F. Rohrer (1921). "Der Index der Körperfülle als Maß des Ernährungszustandes". Münchner Med. WSCHR. 68: 580–582.
^ ^a ^b Moortel, Koen Van de. "Multidirectional regression analysis".
^ "What is the Ponderal Index? (With pictures)". 3 March 2024.
^ ^a ^b ^c ^d Babar, Sultan (March 2015). "Evaluating the Performance of 4 Indices in Determining Adiposity". Clinical Journal of Sport Medicine. 25 (2). Lippincott Williams & Wilkins): 183. Retrieved August 31, 2015.
^ Lawrence F. Ditmier: New Developments in Obesity Research. Nova Science Publishers, Hauppauge, New York 2006, ISBN 1-60021-296-4^{[page needed]}
^ v Roth, Jonathan (2018). "Taller people should have Higher BMI's and Blood Pressure Measurements as their Normal" (PDF). Biomed J Sci & Tech Res. 6 (4). doi:10.26717/BJSTR.2018.06.001381.
^ ^a ^b ^c Davies, D. P. (1980). "Size at birth and growth in the first year of life of babies who are overweight and underweight at birth". Proceedings of the Nutrition Society. 39 (1): 25–33. doi:10.1079/PNS19800005. PMID 6988835.
^ ^a ^b ACC/SCN NUTRITION POLICY PAPER No. 19 - Glossary Archived 2007-08-20 at the Wayback Machine by Lindsay H. Allen and Stuart R. Gillespie
^ Fayyaz, Jabeen (June 2005). "Ponderal Index". Journal of Pakistan Medical Association. 55 (6): 228–9. PMID 16045088.
^ Babar, Sultan (March 2016). "The Use of Adiposity Indices for Wide Receivers From 2015 NFL Combine". Clinical Journal of Sport Medicine. 26 (2). Lippincott Williams & Wilkins) 2: e23. Retrieved April 30, 2016.
^ "Ponderal Index (Corpulence Index) Calculator".

[Ensminger-1] Foods and Nutrition Encyclopedia, Audrey H. Ensminger, Marion Eugene Ensminger. p. 1645

[oregon-2] EXSS 323: LAB 1 - BIOMECHANICS TOOLS: Computers, Algebra and Trig Oregon State University

[3] F. Rohrer (1921). "Der Index der Körperfülle als Maß des Ernährungszustandes". Münchner Med. WSCHR. 68: 580–582.

[moortel-4] Moortel, Koen Van de. "Multidirectional regression analysis".

[5] "What is the Ponderal Index? (With pictures)". 3 March 2024.

[babar-6] Babar, Sultan (March 2015). "Evaluating the Performance of 4 Indices in Determining Adiposity". Clinical Journal of Sport Medicine. 25 (2). Lippincott Williams & Wilkins): 183. Retrieved August 31, 2015.

[7] Lawrence F. Ditmier: New Developments in Obesity Research. Nova Science Publishers, Hauppauge, New York 2006, ISBN 1-60021-296-4^{[page needed]}

[8] v Roth, Jonathan (2018). "Taller people should have Higher BMI's and Blood Pressure Measurements as their Normal" (PDF). Biomed J Sci & Tech Res. 6 (4). doi:10.26717/BJSTR.2018.06.001381.

[Davies-9] Davies, D. P. (1980). "Size at birth and growth in the first year of life of babies who are overweight and underweight at birth". Proceedings of the Nutrition Society. 39 (1): 25–33. doi:10.1079/PNS19800005. PMID 6988835.

[unsystem-10] ACC/SCN NUTRITION POLICY PAPER No. 19 - Glossary Archived 2007-08-20 at the Wayback Machine by Lindsay H. Allen and Stuart R. Gillespie

[11] Fayyaz, Jabeen (June 2005). "Ponderal Index". Journal of Pakistan Medical Association. 55 (6): 228–9. PMID 16045088.

[babar2-12] Babar, Sultan (March 2016). "The Use of Adiposity Indices for Wide Receivers From 2015 NFL Combine". Clinical Journal of Sport Medicine. 26 (2). Lippincott Williams & Wilkins) 2: e23. Retrieved April 30, 2016.

[13] "Ponderal Index (Corpulence Index) Calculator".

Corpulence index information

and 27 Related for: Corpulence index information

Corpulence index

Body mass index

Classification of obesity

Fat fetishism

Caloric deficit

CI

Obesity

Weight class

Overweight

Lean body mass

Metabolic syndrome

Underweight

Weight loss

Weight cycling

Body shape

Body fat percentage

Bariatric surgery

Bariatrics

Weight gain

Obesity paradox

Relative Fat Mass

Childhood obesity

Weight loss camp

Hypertension

Liposuction

Human body weight

Gastroesophageal reflux disease

Human body weight
Part of a series on
General concepts Obesity (Epidemiology) Overweight Underweight Body shape Weight gain Weight loss Gestational weight gain Diet (nutrition) Weight management Overnutrition Childhood obesity (Epidemiology)
Medical concepts Adipose tissue Classification of obesity Genetics of obesity Metabolic syndrome (Epidemiology of metabolic syndrome) Metabolically healthy obesity Obesity paradox Set point theory
Measurements Body adiposity index Body mass index Body fat percentage Body Shape Index Corpulence index Lean body mass Relative Fat Mass Waist–hip ratio Waist-to-height ratio
Related conditions Diabetes (Type 1) Eating disorder (Anorexia • Bulimia • Binge eating disorder) Food addiction Hyperthyroidism Malnutrition RED-S Starvation (Starvation response) PCOS
Obesity-associated morbidity Arteriosclerosis Atherosclerosis Fatty liver disease GERD Gynecomastia Heart disease Hypertension Obesity and cancer Osteoarthritis Prediabetes Sleep apnea Type 2 diabetes
Management of obesity Anti-obesity medication Bariatrics Bariatric surgery Dieting (List of diets) Caloric deficit Exercise (outline) Liposuction Obesity medicine Weight loss camp Weight loss coaching Yo-yo effect
Social aspects Comfort food Fast food (Criticism) Fat acceptance movement Fat fetishism Health at Every Size Hunger Obesity and the environment Obesity and sexuality Sedentary lifestyle Social determinants of obesity Social stigma of obesity Weight cutting Weight class
v t e