KNES 348 EXAM 3 Questions with Complete Answers.
During the O2 deficit which energy system is mostly making the ATP? - Correct Answer
Phosphagen and Lactic System
The difference between O2 consumed and the O2 requirement for exercise is called.... -
Correct Answer O2 defecit
What happens to oxygen deficit over time? - Correct Answer Becomes smaller
How are calories typically measured and in what units? - Correct Answer Resting O2
consumption; MET
What is exercise where there is a balance between O2 consumption + requirement called?
- Correct Answer Steady State (Rate) Exercise
What is oxygen requirement during recovery that exceed resting value called? - Correct
Answer Excess Post-Exercise Oxygen Consumption
How long does O2 deficit last for? - Correct Answer For a few minutes
How long does excess post-exercise oxygen consumption (EPOC) last for? - Correct
Answer minutes to days
A ____________________ has a quicker transition to steady state VO2. - Correct Answer
Aerobically trained individual
What are the 7 factors that cause O2 consumption to be high after exercise? - Correct
Answer -Resynthesize ATP and PCr
-Resynthesize lactate to clycogen
-Oxidize lactate in energy metabolism
-Restore oxygen to myoglobin and blood
-Thermogenic effects of elevated core tempreture
-Thermogenic effects of hormones (catecholamines)
-Effects of elevated HR, ventilation, and other elevated physiologic functions
What are four factors that determine endurance performance success? - Correct Answer -
High maximal oxygen uptake (VO2 max)
-High lactate threshold
-High economy of effort
-High percentage of slow-twitch muscle fibers
An aerobically trained athlete with a high VO2max will be able to.... - Correct Answer obtain
a higher exercise intensity
, What is the point during exercise of increasing intensity at which blood lactate begins to
accumulate above acute resting levels called? - Correct Answer Lactate Threshold
T/F: Lactate Threshold is below VO2 max - Correct Answer TRUE
What will exercising above your lactate threshold lead to? - Correct Answer Fatigue
Is lactate threshold trainable? - Correct Answer YES
What type of athlete competes at their lactate threshold? - Correct Answer Endurance
Athletes
In the average person, lactate threshold is _____-_____% of VO2max? - Correct Answer
50-60%
In an elite endurance athlete, lactate threshold is _____-_____% of VO2max? - Correct
Answer 70-80%
What 5 factors cause Lactate Threshold? - Correct Answer -Increasing reliance upon
anaerobic mechanisms due to the higher ATP needs of more intense exercise
-Glycolysis occurring too rapidly even with sufficient O2
-Epinephrine and norephinephrine are secreted with higher intensity exercise and
increase glcolysis
-FT fibers begin to be recruited
-Decreased blood flow to lactate clearing tissue (liver)
If runner B consumes less energy than runner A to achieve same speed means runner B is
more.... - Correct Answer Economical
At the same O2 consumption, the more economical runner B runs ________. - Correct
Answer Faster
The ratio between CO2 released (VCO2) and oxygen consumed (VO2) - Correct Answer
Respiratory Exchange Ratio
What is the RER value at rest is _____ to _____ - Correct Answer .78 to .80 (more fat than
carbs)
What energy substrate is being used if RER is 1? - Correct Answer Carbs
What energy substrate is being used if RER is .7? - Correct Answer Fats
Where does respiratory exchange ratio take place? - Correct Answer Mitochondria
What energy substrate is used when one becomes more aerobically trained or
accustomed to exercise? - Correct Answer Fats
During the O2 deficit which energy system is mostly making the ATP? - Correct Answer
Phosphagen and Lactic System
The difference between O2 consumed and the O2 requirement for exercise is called.... -
Correct Answer O2 defecit
What happens to oxygen deficit over time? - Correct Answer Becomes smaller
How are calories typically measured and in what units? - Correct Answer Resting O2
consumption; MET
What is exercise where there is a balance between O2 consumption + requirement called?
- Correct Answer Steady State (Rate) Exercise
What is oxygen requirement during recovery that exceed resting value called? - Correct
Answer Excess Post-Exercise Oxygen Consumption
How long does O2 deficit last for? - Correct Answer For a few minutes
How long does excess post-exercise oxygen consumption (EPOC) last for? - Correct
Answer minutes to days
A ____________________ has a quicker transition to steady state VO2. - Correct Answer
Aerobically trained individual
What are the 7 factors that cause O2 consumption to be high after exercise? - Correct
Answer -Resynthesize ATP and PCr
-Resynthesize lactate to clycogen
-Oxidize lactate in energy metabolism
-Restore oxygen to myoglobin and blood
-Thermogenic effects of elevated core tempreture
-Thermogenic effects of hormones (catecholamines)
-Effects of elevated HR, ventilation, and other elevated physiologic functions
What are four factors that determine endurance performance success? - Correct Answer -
High maximal oxygen uptake (VO2 max)
-High lactate threshold
-High economy of effort
-High percentage of slow-twitch muscle fibers
An aerobically trained athlete with a high VO2max will be able to.... - Correct Answer obtain
a higher exercise intensity
, What is the point during exercise of increasing intensity at which blood lactate begins to
accumulate above acute resting levels called? - Correct Answer Lactate Threshold
T/F: Lactate Threshold is below VO2 max - Correct Answer TRUE
What will exercising above your lactate threshold lead to? - Correct Answer Fatigue
Is lactate threshold trainable? - Correct Answer YES
What type of athlete competes at their lactate threshold? - Correct Answer Endurance
Athletes
In the average person, lactate threshold is _____-_____% of VO2max? - Correct Answer
50-60%
In an elite endurance athlete, lactate threshold is _____-_____% of VO2max? - Correct
Answer 70-80%
What 5 factors cause Lactate Threshold? - Correct Answer -Increasing reliance upon
anaerobic mechanisms due to the higher ATP needs of more intense exercise
-Glycolysis occurring too rapidly even with sufficient O2
-Epinephrine and norephinephrine are secreted with higher intensity exercise and
increase glcolysis
-FT fibers begin to be recruited
-Decreased blood flow to lactate clearing tissue (liver)
If runner B consumes less energy than runner A to achieve same speed means runner B is
more.... - Correct Answer Economical
At the same O2 consumption, the more economical runner B runs ________. - Correct
Answer Faster
The ratio between CO2 released (VCO2) and oxygen consumed (VO2) - Correct Answer
Respiratory Exchange Ratio
What is the RER value at rest is _____ to _____ - Correct Answer .78 to .80 (more fat than
carbs)
What energy substrate is being used if RER is 1? - Correct Answer Carbs
What energy substrate is being used if RER is .7? - Correct Answer Fats
Where does respiratory exchange ratio take place? - Correct Answer Mitochondria
What energy substrate is used when one becomes more aerobically trained or
accustomed to exercise? - Correct Answer Fats
