Equations

Question 1

%Fat

Answer 1

%Fat = (FM/body weight) x 100

Question 2

%FFM

Answer 2

%FFM = (FFM/body weight) x 100

Question 3

Calculations for underwater weighing

Answer 3

Body volume = ( Mass (air) - Mass (water) / Water Density ) - RV - 100

Body density = Mass (air) / Body volume

% Body Fat = Use Siri

Question 4

What is the Siri equation?

Answer 4

% Body Fat = ((4.95/body density) - 4.50) x 100

Question 5

What do we use when finding body fat % from BIA?

Answer 5

Lukaski and Bolonchuks Formula

Question 6

What do the letters in Lukaski and Bolonchuks Formula mean?

Answer 6

S = height
R = Resistance
Sex = 1 (Male), Female (2)
W = weight
Age = in years

Question 7

How do we calculate FFM?

Answer 7

= Body Weight / Hydration constant (0.73)

Question 8

How do we calculate FM?

Answer 8

= Body Weight (BW) - FFM

Question 9

RDI

Answer 9

= EAR + 2SD’s

Question 10

If SD is unknown RDI

Answer 10

= EAR x (1 + 0.1 + 0.1)

Question 11

In the Quantitative Approach what does the letter D mean?

Answer 11

D = Difference

Question 12

In the Quantitative Approach what does the letter y mean?

Answer 12

y = Mean observed intake

Question 13

In the Quantitative Approach what does the letter r mean?

Answer 13

r = Median requirement (EAR)

Question 14

In the Quantitative Approach what does the letter SDD mean?

Answer 14

SDD = SD of difference

Question 15

In the Quantitative Approach what does the letter Vreq mean?

Answer 15

Vreq = Variance of distribution of reqs in group

Question 16

In the Quantitative Approach what does the letter Vwithin mean?

Answer 16

Vwithin = Average variance in day-to-day intakes of nutrient

Question 17

In the Quantitative Approach what does the letter n mean?

Answer 17

n = number of days intake was observed

Question 18

What are the 3 steps of Determining apparent adequacy in the Quantitative approach?

Answer 18

1. Find D
2. Find SDD
3. D/SDD

Question 19

What is the Goldberg Equation?

Answer 19

EI:BMR < cut off