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WorksheetsOxygen uptake and delivery
Total questions: 20
Worksheet time: 20mins
The energy required for movement comes specifically from:
the breakdown of glycerol
the breakdown of glycogen
the breakdown of creatine phosphate
the breakdown of adenosine triphosphate (ATP)
When does oxygen deficit occur?
Before the exercise
During steady state
Any time where the anaerobic glycolysis or ATP-PC energy systems are the predominant producers of ATP
Any time where the aerobic glycolysis energy system is the predominant producer of ATP
A person’s maximum steady state is at the highest intensity when:
Oxygen demand to the working muscles is greater than oxygen supply
Oxygen supply to the working muscles is greater than oxygen demand
Oxygen supply to the working muscles is equal to oxygen demand
Lactate production is greater than lactate removal
Lactate production is less than lactate removal
The predominant energy system for providing energy during a 50m freestyle race is:
ATP-PC system
Anaerobic glycolysis
Aerobic glycolysis
None of the above as they are all contributing
During energy system interplay:
Only one system is active at a time
Only one system is dominant at a time
The ATP-PC system is always the preferred system
The aerobic system is dominant during most exercises
What is OBLA?
Where oxygen consumption remains above resting levels at the end of the activity
When oxygen supply to the working muscles equals demand
When inorganic phosphates start to impact on the functioning of the ATP-PC system
When intensity is at a level where lactic acid starts to accumulate in the blood
What is the lactate inflection point?
Amount of blood lactate after 4mmols
The balance point between lactate entry into and removal from the blood
The highest oxygen deficit possible
The line above the curve at the start of activity
The predominant energy system for ATP at the Lactate Inflection point would be
ATP-PC energy system
Anaerobic glycolysis energy system
Aerobic energy system
Which best describes the use of the ATP-PC energy system?
High rate of ATP and High yield
High rate of ATP and Low yield
Low rate of ATP and High yield
Low rate of ATP and Low yield
What does the term 'EPOC' stand for:
Excess Post Exercise Oxygen Consumption
Exercise Pre Oxygen Consumption
Exercise Post Excess Oxygen Consumption
Excess Pre Oxygen Consumption
How many phases are there in EPOC?
1
2
3
4
Lactate Inflection point
Is the highest OBLA that the athlete can achieve
Is the highest Oxygen Deficit that the athlete can achieve
Is the highest EPOC that the athlete can achieve
Is the highest Steady State that the athlete can achieve
Lactate Inflection Point
Is approx 85% of max HR and 75% of max VO2
Is approx 75% of max HR and 85% of max VO2
Is approx 70 of max HR and 40% of max VO2
Is 100% of max HR and 100% of max VO2
VO2 is:
The maximum amount of oxygen taken up and used by the body. Measured in L/min
The volume of blood directed to the working muscles at a given time. Measured in L/min or mL/kg/min
The amount of oxygen taken up and used by the body. Measured in L/min or mL/kg/min
The volume of blood that is returned to the heart. Measured in L/min
Relative VO2 is:
The volume of oxygen uptake measured in mL/kg/min.
The volume of oxygen uptake measure in L/min.
In the diagram above, the shaded area is known as the
Oxygen Debt
Oxygen Deficit
Oxygen saturation point
EPOC
At exercise intensities just below Lactate Inflection Point (LIP)
H+ ions start to accumulate
lactate production exceeds lactate removal
H+ ions interfere with glycolytic enzymes
lactate removal will be equal to lactate production
During a 30 second uphill sprint, the fuel source that is required to resynthesize ATP comes from:
muscle glycogen
blood glucose
liver glycogen
blood borne FFA's
The primary food fuel for energy production during maximal physical activity would be:
PC
Protein
Fats
Carbohydrates
Aerobic glycolysis occurs in which of the following?
Myosin
Myofibril
Cytoplasm
Mitochondria
