energy expenditure (measurement)

Question 1

what helps to choose the best method?

Answer 1

subject friendly
reproducible
valid
not too expensive

Question 2

name the three calorimetry methods

Answer 2

direct calorimetry
indirect calorimetry
non-calorimetric methods

Question 3

what does the calorimetry methods do?

Answer 3

measures the amount of heat released or absorbed during a chemical reaction
law of conservation of energy
(energy cannot be created nor destroyed)

Question 4

explain direct calorimetry

Answer 4

rate of heat loss/output from the body
measures EE overtime
can be impractical for human studies

Question 5

name the two ways which direct calorimetry can work?

Answer 5

chamber
( controlled temperature so heat produced by client is measured)
water cooled garment
(subject can move more freely than in the chamber)

Question 6

describe indirect calorimetry

Answer 6

measures the rate of heat generated by the body by measuring the O2 consumed +/or CO2produced
measures rate of consumption of oxygen

Question 7

name some of the indirect calorimetry methods

Answer 7

whole body indirect calorimetry chamber
Douglas bag method
respirometer
ventilated hood system