Body composition

fat free massbody composition monitorsfat-free masslean body mass
In physical fitness, body composition is used to describe the percentages of fat, bone, water and muscle in human bodies.wikipedia
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Body fat percentage

body fatfat masspercentage body fat
A reasonably accurate estimation of body fat can be obtained by means of a "two compartment model" of the human body which is based upon two simplifying assumptions: 1. Human fat has a density of 0.9 grams/ml, and 2.
The body fat percentage is a measure of fitness level, since it is the only body measurement which directly calculates a person's relative body composition without regard to height or weight.

Air displacement plethysmography

The technique uses air as opposed to water and is known as air displacement plethysmography (ADP).
Air displacement plethysmography or ADP (also known as whole-body air displacement plethysmography) is a recognized and scientifically validated densitometric method to measure human body composition.

Lean body mass

lean massmasslean
The technique then estimates the percentage of body fat and lean body mass (LBM) through empirically derived equations similar to those used with underwater weighing (for the density of fat and fat free mass).
Lean body mass (LBM) is a component of body composition, calculated by subtracting body fat weight from total body weight: total body weight is lean plus fat.

Bioelectrical impedance analysis

bioimpedancebioimpedance analysis
Another method is bioelectrical impedance analysis (BIA), which uses the resistance of electrical flow through the body to estimate body fat.
Bioelectrical impedance analysis (BIA) is a commonly used method for estimating body composition, and in particular body fat.

Dual-energy X-ray absorptiometry

DEXAbone densitometrydual energy X-ray absorptiometry
Body composition measurement with dual energy X-ray absorptiometry (DEXA) is used increasingly for a variety of clinical and research applications.
DXA scans can also be used to measure total body composition and fat content with a high degree of accuracy comparable to hydrostatic weighing with a few important caveats.

Body mass index

BMIbody mass index (BMI)body-mass index
Body mass index
BMI was designed to be used as a simple means of classifying average sedentary (physically inactive) populations, with an average body composition.

Physical fitness

fitnessphysical trainingphysical
In physical fitness, body composition is used to describe the percentages of fat, bone, water and muscle in human bodies.

Fat

greasetotal fatdietary fat
In physical fitness, body composition is used to describe the percentages of fat, bone, water and muscle in human bodies.

Bone

bone tissuecancellous bonecortical bone
In physical fitness, body composition is used to describe the percentages of fat, bone, water and muscle in human bodies.

Water

H 2 Oliquid wateraqueous
In physical fitness, body composition is used to describe the percentages of fat, bone, water and muscle in human bodies.

Muscle

musclesmuscularmusculature
In physical fitness, body composition is used to describe the percentages of fat, bone, water and muscle in human bodies.

Human body

bodyhuman anatomyhuman physiology
In physical fitness, body composition is used to describe the percentages of fat, bone, water and muscle in human bodies.

Human body weight

body massbody weightweight
Body volume is combined with body weight (mass) in order to determine body density.

Calipers

caliperdividersdivider caliper
A common skin fold method is by using gun style calipers to measure the thickness of subcutaneous fat in multiple places on the body.

Subcutaneous tissue

subcutaneoussubcutaneous fathypodermis
A common skin fold method is by using gun style calipers to measure the thickness of subcutaneous fat in multiple places on the body.

Subscapularis muscle

subscapularissubscapularsubscapularis tendon
This includes the abdominal area, the subscapular region, arms, buttocks and thighs.

Creatinine

serum creatininenormal renal functioncreatinin
Creatinine height ratio is calculated as 24-hour urine creatinine multiplied by 100 over the expected 24-hour urine creatinine for height.

Internal consistency

internal reliabilityconsistency rateinternally consistent
(See internal consistency for merits on testing in this manner.) If an individual is to be tested from one period to the next, all factors should ideally remain as similar as possible to reflect the best indicator of true change in composition.

Albert R. Behnke

BehnkeAlbert Behnke, M.D.Albert R. Behnke Award
Behnke is also known as the "modern-day father" of human body composition for his work in developing the hydrodensitometry method of measuring body density, his standard man and woman models as well as a somatogram based on anthropometric measurements.

Personal trainer

trainerfitness trainerpersonal training
Proper exercise prescription may result in improved body composition, physical performance, heart condition and health outcomes.

Lightweight rowing

lightweight rowerlightweightlightweight crew
Although lightweight rowing is the counterpart to heavyweight rowing, it is a fairly different sport, relying much more on ideal body composition and technique than raw strength.

Journal of Cachexia, Sarcopenia and Muscle

The Journal of Cachexia, Sarcopenia and Muscle is a quarterly peer-reviewed medical journal that covers research relevant to changes in body composition, especially cachexia and sarcopenia, as consequences of chronic illnesses or of the aging process, respectively.