Measures of Energy Expenditure

Question 1

What is indirect calorimetry

Answer 1

-Accurate estimate of energy expenditure through gas exchange
-Measures how much CO2 is prodcued and how much O2 is consumed at both rest and during aerobic exercise

Question 2

What is lactate sampling
(mention +ves and -ves in your answer)

Answer 2

-Blood sample
-Measures blood lactate level
-Accurate estimate
-Causes pain to athlete
-Exclusive

Question 3

Give examples of VO2 max tests
(mention +ves and -ves in your answer)

Answer 3

-Bleep test (multi-stage fitness test)
-Harvard step test
-Coopers 12-minute run
-Predictor
-Not accurate
-Easily accessible

Question 4

What is direct gas analysis and what equipment is commonly used when measuring it

Answer 4

-Measures the concentration of oxygen that is inspired and the concentration of carbon dioxide that is expired

-Treadmill
-Cycle Ergometer

Question 5

What is the Respiratory Exchange Ratio (RER)
-Mention the formula
-What do specific values mean

Answer 5

-The ratio of carbon dioxide produced comared to oxygen consumed and is a measure of exercise intensity

-RER=CO2 produceed per min/O2 consumed per min

Values:
Close to 0.7=Performer is using fats
Close to 1=performer is using carbohydrates
Above 1=Performer is working anaerobically