Acute Metabolic Responses To Exerciss

Question 1

How much atp in skeletal muscle

Answer 1

5-6mmol atp per kg muscle

Sprinting-3.7 mmol ATP per kg muscle per second

Question 2

What factors determine energy pathway utilisation

Answer 2

Exercise intensity, exercise duration

Question 3

Describe atp and pcr concentrations during a 30s sprint

Answer 3

Atp relatively well preserved, although may dip by 20% in very intense exercise.

Pcr sees a rapid and large reduction and very little remaining by 30s

Question 4

Describe muscle glycogen and lactate/pyruvate conc during 1st 30s sprint

Answer 4

High lactate accumulation suggesting glycolysis leading to lactate production as a major pathway

Question 5

Energy systems in intense exercise order of power

Answer 5

1.pcr
2.glycolysis
3.oxidative phosphorylation

Question 6

Describe the fuel sources during Steady state exercise as we get more intense

Answer 6

1.muscle glycogen increases
2.plasma ffa peaks around 40-55% of max
3.other fat sources peaks at 55%