Ch. 4 - Body Composition

E1 - Dr. Prinster

Fat Mass

percent body fat

Non-fat Component

lean body mass

What is body composition?

Used to measure body fat to lean body mass

subcutaneous fat

fat under the skin

visceral fat

fat around the organs

brown fat

used for energy

white fat

stains yellow, we don’t need as much of it

What type of organ is body fat?

endocrine

How much essential body fat is needed?

3% - men, 12% - women (b/c they bare children)

What tissue is fat stored in?

adipose

Three uses for fat.

insulation, padding, energy

obesity

excess of body fat

weight loss does not always mean ___ loss. It can include… and …

fat; water and lean body mass loss

Android obesity

apple shape, carry fat in stomach, more common in men

Gynoid obesity

pear shape, carry fat in hips and thighs, more common in women

Dual energy X-Ray absorptiometry

machine that low dose of x-ray energy to measure fat distribution

Underwater technique

regular weight to compared underwater weight, fat more buoyant than lean tissue

Air Displacement

air displaced by a person sitting in a small chamber

What % of your daily caloric intake should be carbs?

45-65% avg person, 70% elite athletes

Anthropometric Measurements

Skin fold thickness

Girth Measurements

circumference at specific site

Bioelectrical Impedance

weak electrical current is passed through the body, fat tissue doesn’t conduct electricity as well as muscle

Body Mass Index (BMI)

body weight x 705/(height in in.)^2