ch 8 flashcards
What does the human body need to function properly and meet the demands of exercise?
A constant supply of energy
What is the energy molecule used to do cellular work?
Adenosine triphosphate (ATP)
What does the first law of thermodynamics state?
Energy can neither be created nor destroyed, only converted from one form to another
Which of the following is NOT a fuel used to create ATP?
Carbon dioxide
What process quickly produces ATP from glucose?
Glycolysis
What is the primary purpose of protein in healthy people?
Muscle building
What are the two factors that categorize exercise?
Intensity and duration
Which energy system supports short duration activities due to limited supply?
ATP-PC pathway
Which by-product is produced during oxidative metabolism and exhaled?
Carbon dioxide
What is steady-state aerobic exercise?
Engaging in the same level of activity without intensity changes for several minutes
What happens when breathing rate becomes too rapid to allow talking during exercise?
The body shifts to oxidizing almost exclusively carbohydrate to fuel the activity
What is the total daily energy expenditure (TDEE)?
The total number of calories that a person burns in a day
Which of the following is NOT a component of the total daily energy expenditure (TDEE)?
Lactate threshold
What is the primary fuel source during lower-intensity activities?
Fats
Which type of activities generally burn more total calories in a given time?
Higher-intensity activities
