ESS 345 CHAPTER 5 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED

ESS 345 CHAPTER 5 EXAM QUESTIONS AND ANSWERS

WITH COMPLETE SOLUTIONS VERIFIED

60-75%


Resting Metabolic Rate (RMR)


10%


Thermic effect of food (TEF)


15-30%


Physical Activity (PA)


direct energy expenditure


measures heat generate by metabolic reactions


indirect energy expenditure


gas analysis

HR monitor


direct calorimetry pros


-accurate over time

-good for resting metabolic measurements


direct calorimetry cons


-expensive and slow

-heat added by exercise equipment

, -measurement errors created by sweat

-neither practical nor accurate for exercise


indirect calorimetry


estimates energy expenditure using O2 and CO2 produced

only accurate for steady state exercises


Total Energy Expenditure


60-75% RMR

10% TEF

15-30% PA


O2 and CO2 measurements


VO2: volume of O2 consumed per minute

VCO2: volume of CO2 produced per minute

Ve: ventilations per minute


Respiratory Exchange Ratio (RER)


O2 usage depends on type of fuel

Glucose requires less oxygen than lipid metabolism

Start exercise using fat and transition to more carbs

RER - ratio between CO2 production and O2 usage

VCO2/VO2


Types of Fuel Burned