Fechar
Define high intensity (intermittent) exercise
(HIE)
Name three ways to investigate HIE
Compare the peak power output from HIE and Vo2 max.
What is the term for the peak power output that is over the Vo2max level?
What are the main energy systems used during HIE? (3)
Describe the ATP/ADP system.
Describe the PCr system
What is the resting PCr concentration in muscle?
How long can it regenerate ATP for?
How is PCr resynthesised?
If there is not enough oxygen what happens?
What is the glycogen resting concentration in muscle?
What does this depend on?
How does glycogenolysis work?
How does glycolysis work?
What is more likely to be used as a key source of energy?
Why is glucose unlikely to be a key source of energy?
What is glycogen+3ADP+3Pi
converted to, using which enzymes?
HIE increases ATP cytosol = an increase in ADP, what does this lead to?
state the adenylate kinase reaction
If AMP increases by too much in the muscle what does this mean?
How is AMP removed from the bloodstream?
How long does muscle ATP contribute towards energy production during exercise?
How long does muscle ATP + ATP-PCr contribute towards energy production during exercise?
How long does muscle ATP + ATP_PCr + Aerobic glycolysis contribute towards energy production during exercise?
How long does muscle ATP + ATP_PCr + Aerobic glycolysis + 02 system contribute towards energy production during exercise?
What happens to levels pre and post exercise for:
ATP
PCr
Glycogen
Glucose
What fibre type has a higher PCr concentration?
What fibre type has a higher PCr degradation?
What does this show?
Between 0-6 seconds what contributes most to the ATP turnover rate?
Between 6-15 seconds what contributes most to the ATP turnover rate?
Between 15-30 seconds what contributes most to the ATP turnover rate?
Can hormones regulate energy production during high intensity exercise?
Why?
How is energy production regulated during HIE?
Name the 5 things that regulate energy production
What happens to muscle pH during HIE?
Why?
What happens to ADP and AMP during HIE?
Explain the process of converting glycogen to acetyl-CoA.
Which enzymes affect this chain of events and at what points?
What are the factors that allosterically regulate glycogen phosphorylate activation during HIE.
What enzyme deactivates glycogen phosphorylase?
What enzyme activates glycogen phosphorylase?
How do we explain glycogen phosphorylase for 3 0seconds of exercise?
How do we allosterically regulate pyruvate dehydrogenase activiation during HIE?
How do we activate PDH?
How do we allosterically regulate pyruvate dehydrogenase activiation during HIE?
How do we deactivate PDH?
What happens to PDH during 30s of exercise?
When repeated bouts of HIE were completed how many participants could resynthesise PCr? How long did it take?
