Energy Systems Flashcards
How do w continue to exercise if the only one usable energy source, ATP, runs out in 2-3 seconds?
Resynthesise ATP by adding energy to ADP
Endothermic reaction
The resynthesis of ATP is dependent upon the supply of energy from the 3 energy systems:
ATP-PC system, lactic acid system, aerobic system
All 3 have the same function, via coupled reactions they supply energy to resynthesis ADP back into ATP
The % of energy supplied from each system is dependent on the intensity of the exercise
Give an example of the ATP/PC system
Provides energy for high intensity short duration (less than 10 seconds)
Jumping up to spike a ball in volleyball
Training effects of anaerobic training
Increased storage of ATP & PC in muscles, increases energy supply for longer periods (1-2 seconds) and delays the lactic acid threshold.
E,g deflecting a ball in netball quicker than the opponent
Give an example of a sport using the lactic acid system
High intensity/ low duration
30 seconds flat out to exhaustion sprinting in rugby along the pitch to get the ballwith very little recovery
If intensity is lowered, can be up to 3 minutes, e.g 800m
Lactic acid Training effects
Increased tolerance to high levels of lactic acid. Increased storage of glycogen in muscles
Delays OBLA
Prolongs the Lactic acid threshold
Delays fatigue due to increasing lactic acid
What is ATP?
Adenosine triphosphate is a compound that consists of one complex element adenosine and three simple phosphate elements
Elements are held together by high energy bonds which store potential energy.
What is energy?
Ability to perform work
Measured in joules (J)
What is work?
Work is done when a force is applied to a body to move it over a certain distance.
Expressed as:
Force X distance
Measured in newtons (N)
What us power?
Rate at which work can be done
Force X distance / time
Measured in watts (W)
Reaction site ATP/PC system
Sarcoplasm
Controlling enzyme of ATP/PC system
ATPase for ATP
PC fir creating kinase
Duration and intensity for ATP/PC system
Duration: 10 seconds
Intensity: high
E.g jumping up to spike a ball in volley ball
Recovery process for ATP/PC
A lactic acid phase 2/3 min
Food fuel lactic acid system
Stored in muscle as glycogen and glucose
Reaction site lactic acid system
Sarcoplasm
