Anthropometrics Flashcards Preview

Nutrition > Anthropometrics > Flashcards

Flashcards in Anthropometrics Deck (18):
1

Anthropometrics: limitations

cannot ID specific nutrient deficiencies or early signs
must consider non-nutritional factors that affect nutritional status

2

Anthropometric assessment overview

vitals
height/weight/BMI
waist-to-hip ratio
waist circumference

3

Assessment of body composition

BMI
Circumference: waist and hip
Skin fold thickness
Bioelectric impedance
DEXA

4

BMI

weight (kg)/height (m) OR wt (lbs)/ht (in) x 705
semi-reliable
used to determine risk of chronic disease
- CVD, DMII, sleep apnea

5

BMI limitations

unsuitable for athletes, pregnant/lactating people, adults > 65 yo
does not account for fat distribution or lean muscle mass

6

Waist circumference: protocol

overnight fast
little clothing
stand erect with abs relaxed, arms at side, and weight equally divided on both legs
end of expiration
take measurement halfway btw lowest rib margin and iliac crest
record to nearest 0.5 cm

7

Waist circumference: benefits

predicts mortality better than any other anthropometric measurement
indicator of abdominal obesity

8

Waist circumference: increased risks

DM II
HTN
gall stones
heart dz/dyslipidemia

9

Waist circumference: ranges

women:
- normal = 64 - 80 cm
- overweight = 80 - 88 cm
- obese = > 88

men:
- normal = 78 - 94 cm
- overweight = 94 - 102 cm
- obese = > 102

10

Hip circumference: protocol

same as waist
greater trochanter = landmark

11

Waist-to-hip ratio

taken in inches
low risk = < 0.8 (F) or < 0.95 (M)
mod risk = 0.81 - 0.85 (F) or 0.96 - 1.0 (M)
high risk = > 0.85 (F) or > 1.0 (M)

12

Adipose distribution: Gynoid obesity

incr subcutaneous fat
risk for food allergies
intestinal permeability
dysbiosis
HPATG axis dysfx

13

Android obesity

incr visceral adipose tissue (located in mesentery and omentum)
= more cellular, vascular, innervated, metabolically active than subQ fat

14

VAT health risks

incr inflm
insulin resistance
CV health risks
cognitive abnormalities
- dementia/alzheimer's

15

Bioelectrical impedance

estimates body fat composition
within 3-10% accuracy
avg fat mass = 22% (m) 32% (f)

16

Bioelectrical impedance: limitations

accuracy variance
hydration status
less accurate when BMI > 35

17

DEXA
dual emission x-ray absorptiometry

measures tissue mass % fat, lean, and bone mineral content
- can't distinguish fat types

18

Total daily energy expenditure
(metabolic rate)

depends on:
basal metabolic rate (60-75%)
physical activity (20%)
thermic effect of food (10%)