Energy systems Flashcards
what is adenosine triphosphate
only compound cells can take energy from
what is adenosine diphosphate
compound after tap releases its energy
phosphocreatine
used to resynthesises atp
atp - pc system
atp is broken down with atpase, this leaves adenosine diphosphate and a phosphate, this storage of atp lasts 2 seconds, add must be resynthesises back into the atp to be used as energy, then the creatine phosphate stored in the sarcoplasm and is affected by the enzyme creatine kinase, this energy is used to resynthesises atp
atp - pc advantages
no harmful by products, energy is stored in the muscle, energy is provided immediately, it does not need oxygen, fewer reactions are involved
atp - pc disadvantages
only lasts 10 seconds, ratio of resynthesis is 1:1, limited stores of cp that cannot be increased, only useful in high intensity activities
Advantages of the lactic acid system
fast speed of reaction, doesn’t require oxygen, few chemical reactions, provides 2 atp
Disadvantages of the lactic acid system
lasts between 30 seconds and 3 minutes, by product is lactic acid which is fatiguing
advantages to the aerobic system
efficient production of energy, almost limitless energy production, no fatiguing by products, uses fats as an energy store
disadvantages of the aerobic system
only suited to low and moderate intensity exercises, it takes time to transition to the system, takes 20 mins to start to use fats as an energy source
what is the energy continuum
how the duration and intensity of the Exercise decides which energy system is predominant
how long does it take for the pc system to be fully resynthesised
3 minutes
