Energy Expenditure

Question 0

The rate of heat lost to the calorimeter is measured in this method.

Answer 0

Direct calorimetry

Question 1

Lowest rate of energy expenditure of an individual

Answer 1

Basal metabolic rate

Question 2

How does indirect calorimetry work?

Answer 2

Amt of Oxygen consumed/carbon dioxide is converted to energy expenditure

Question 3

How does isothermal direct calorimetry work?

Answer 3

Temperature gradient across the insulating layer is proportional to the non-evaporative heat loss from the subject to the calorimeter

Question 4

Direct calorimetry method in which a chamber from which heat lost from a subject is extracted by liquid cooled heat exchanger

Answer 4

Heat sink/adiabatic systems

Question 5

Direct calorimetry method in which heat is measured by flow rate, specific heat capacity of air and increased temp

Answer 5

Convection system

Question 6

Open circuit calorimetry method where expired air is collected in large vinyl & latex rubber meteorologic balloons

Answer 6

Douglas bag method

Question 7

In doubly tagged water, which is measured?
A. Basal metab rate
B. Resting energy expenditure
C. Thermic effect of food
D. Energy expenditure of specific activities
E. Total daily energy expenditure

Answer 7

E

Question 8

In canopy open-circuit, which is not measured?
A. Basal metab rate
B. Resting energy expenditure
C. Thermic effect of food
D. Energy expenditure of specific activities
E. Total daily energy expenditure

Answer 8

E

Question 9

In room open-circuit, which is not measured (if the patient is not confined)?
A. Basal metab rate
B. Resting energy expenditure
C. Thermic effect of food
D. Energy expenditure of specific activities
E. Total daily energy expenditure

Answer 9

E

Question 10

in closed circuit calorimetry, subject is connected via a mask to a __ filled with known amt of 100%O2

Answer 10

Spirometer

Question 11

in open circuit calorimetery, subject breathes through ___ in which room air is inspired from one side and expired air on opposite is collected and analyzed

Answer 11

2 way valve

Question 12

isotope used to tag water in the caloric method called “double labeled water”

Answer 12

D2O18

Question 13

If both oxygen and hydrogen are tagged with known amounts of tracers at the same time, the sum in elimination rate of oxygen and hydrogen tracers will represent the elimination rate of carbon dioxide. true oer false?

Answer 13

False. Sum dapat at hindi diference

Question 14

When DLW subjects urinate, urine samples are used to measure rate of disapperances after 1-3 weels. true or false?

Answer 14

true

Question 15

[bicarbonate-urea method]

amount of labeled carbon in urea is used to estimate ___ production

Answer 15

carbon dioxide

Question 16

How does it estimate carbon dioxide prod?

Answer 16

labeled bicarbonate mixes freely with and becomes diluted by endogenous carbon dioxide produced by the body

Question 17

True or false: At faster speeds, walking becomes more economical, and relationship curves in downward directiion

Answer 17

False

• less economical
• upward