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Flashcards in Chapter 4 Deck (23)
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1

body composition

fat and nonfat components of the body used to assess recommended body weight

2

percent body fat

proportional amount of fat in the body based on the person's total weight. Includes both essential fat and storage fat

3

lean body mass

body weight without body fat

4

recommended body weight

body weight at which there seems to be no harm to human health

5

overweight

an excess amount of weight against a given standard around 20-25%

6

obesity

excessive body fat, usually over 30%

7

height and weight tables published first in

1912

8

essential fat

minimal amount of body fat needed for normal physiological functions.
men=3%
Women=12%

9

storage fat

body fat in excess of essential fat that is stored in adipose tissue

9

Fat serves three basic functions

-insulator to retain body heat
- energy substrate for metabolism
- padding against physical trauma to the body

10

techniques to assess body composition

6

dual-energy X-ray Absorptiomentry
hydrostatic weighing
air displacement
skinfold thickness
girth measurements
bioelectrical impededance

11

dual-energy X-ray Absorptiomentry

Low dose of x-rays
cost prohibitive
+/- 3%

12

hydrostatic weighing

underwater technique
most accurate*** +/-.5%

13

air displacement

Bod pod
calculates body composition based on air replaced
+/-2..2%

14

skinfold thickness

measuring a double fold of skin thickness at various sites
+/-3.5%

15

skinfold measurement sites

Men: chest, abdomen, thigh
women: triceps, suprailium, thigh

16

girth measurements

technique of measuring circumferences at specific body sites+/-4%

17

bioelectrical impededance

by running a weak electrical current through the body
+/-10%

18

Body mass index

uses height and weight to estimate critical fat values at which risk for disease increases

19

android obesity

stores fat in trunk or abdominal area
APPLE

20

gynoid obesity

store fat primarily around the hips and thighs
PEAR

21

waist circumference

waist girth measurement to assess potential risk for disease based on intra-abdominal fat content

22

SEE

Standard error of estimate