NUTR 442 - NUTRITION ASSESSMENT LABORATORY
ASSESSMENT OF ENERGY NEEDS
OBJECTIVE:
To compare different techniques for assessing the resting energy needs of individuals. The
different techniques includes equations based on height, weight, age, and gender, an
equation based on body surface area, and equations based on expired gases.
DATA TO BE COLLECTED FOR THE SUBJECT:
Name of Subject
Gender
Age
Weight
Fi O2
20.93%
Height
Fi CO2
0.03%
Exercise Level
Heart
Rate
V(e)
liters/min
Fe %CO2
Fe% O2
Liters
CO2/min
Liters
O2/min
Resting
Level 1
Level 2
Level 3
Assessment of Energy Needs Worksheet
1.
Calculation of “resting energy expenditure” using the simplified Harris-Benedict equation
(Table 7.7).
2.
Calculation of “resting energy expenditure” using the complete Harris-Benedict equation.
(Table 7.7)
3.
Calculation of “resting energy expenditure” using the WHO equation. (Table 7.7)
4.
Calculation of “resting energy expenditure” using VO2 per 24 hours (assuming 5Cal/liter O2)
VO2 = V(e) x ( Fi(O2) – Fe(O2)) =
REE = VO2 x 5 Cal / liter O2 =
5.
Calculation of “resting energy expenditure” using VO2, VCO2, and RQ.
VO2 =
VCO2 =
RQ = VO2 / VCO2 =
Cal / liter O2 =
Cal / liter CO2 =
Cal / hour = VO2 x 60 min/hr x ____Cal/liter O2 = _____Cal/hr x 24hr/day = _____ Cal/day
% Cal from Fat = _____%
% Cal from CHO = ______ %
Cal Fat/hr = _____% x _____Cal/hr = _____ Cal CHO/hr = _____% x _____Cal/hr = _____
Repeat calculations from # 5 for each level of exercise.
Plot (using graph paper or computer graphics software)
1.
2.
3.
Energy expenditure rate (kcal/hr) (Y-axis) vs. heart rate (x-axis)
% calories from
CHO vs heart rate
FAT vs heart rate
Calories from
CHO/hr vs heart rate
FAT/hr vs heart rate