mr smith-energy systems

Question 1

ATP-PC

Answer 1

stored in muscles for 0-3 seconds
broken down into ADP plus PI
phosphocreatine broken down by creatine kinase
los x2atp
replenished x4 atp is replenished to form atp x2
allows exercise to continue for another 10 seconds
max effort/sprint
highest intensity

Question 2

what type of exercise used for ATP-pc system

Answer 2

highest/ max intensity/anaerobic

Question 3

benefit of ATP-pc system

Answer 3

broken quickly means it provides the energy needed quickly for sport activity
can be quickly replenished
beneficial in Rugby
this is beneficial in explosive/high intensity exercise
beneficial in sports with no breaks in play

Question 4

disadvantages of ATP-PC system

Answer 4

only lasts for 13 seconds
then anaerobic glycolysis is required
requires rest and o2 to replenish
not all activities have breaks in play

Question 5

Anaerobic glycolysis

Answer 5

used when ATP-pcr has been exhausted and high intensity
anything high intensity beyond 13 seconds

Question 6

anaerobic glycolysis

Answer 6

breakdown of glucose into pyruvate using to produce ATP
PFK to produce ATP x2
lack of o2 means pyruvate is converted into lactate without o2/rest levels of lactate will increase until lactate threshold is reached
this caused OBLA to occur
Used when ATP-pcr system has been exhausted and high intensity anaerobic exercise continues
the system can sustain performance up to 60 secs

Question 7

advantages of anaerobic glycoysis

Answer 7

doesn’t require oxygen so can run at higher intensities for longer/continue beyond 13 seconds
few stages so ATP is still released/resynthesized/available quickly
used for 100-400m
used for repeated pressing in football, high number in rugby
lactate built up irritates nerve endings