Energy for Excerise
Adeonsine triphosphate ( ATP)
The food we eat is stores of chemical energy, which is stored in the body as potenial energy
then converted into kinetic energy during sport.
Foods can be stored as amino acids, glycogen and triglycerides as fuels which are motabalised
into ATP
ATP is the only usable form of energy for muscular contraction
Adeonisne- P - P - P one adenosine and 3 phosphates held by a high energy bond.
^ It is stored in the muscle cell
High energy bond Endothermic reaction- takes im energy
Broken down by Atpase into ADP adenosine -P- P (p +energy ) needs energy to resynthises P
Exothermic as it gives of energy
ATP Resynthesis
Atp stores are exhausted quickly only lasting 2-3 seconds
ATP must be constantly Resyntheised.
This when energy is absorbed to rebuild the high energy bond between ADP and a single
phosphate.
This energy is provided by 3 energy systems.
● ATP-PC
● Glycolytic
● Aerobic
, ATP - Pc System
Type Anearobic Strengths Weaknesses
fuel Phosocreatine Pc readily avaible Low ATP yield
No delay for 02 Small Pc stores
Site Sarcoplasm Simple rapid breakdown Leads to rapid fatigue
Provides energy for Very 8-10s
Enzyme Creatine kinase high intensity, Explosive
ATP yield 1
Stages Pc = pi + c + Energy
(coupleld Reaction) ADP +PI + energy = ADP
By products None
Duration + intensity 8-10s
Very high intensity
Fiber type FG/ IIb
Recovery EPOC Rapid recovery
Glycolytic/LA system
Type Anaerobic Strengths Weaknesses
fuel Glycogen, Glucose No oxygen delay Low Atp yield compared to 02
Relatively fast breakdown Fatiguing by product
Site Sacroplasm Lactic acid can be recyled <<PH- inhibits Enzymes
for fuel in future actvities Stimulates pain and fatigue
Enzyme GPP,PFK,LDH
ATP yield 2 for 1 mole of glycogen
Stages
(coupleld Reaction)
By products Lactic acid
Duration + intensity High intensity
30s - 3 mins
Adeonsine triphosphate ( ATP)
The food we eat is stores of chemical energy, which is stored in the body as potenial energy
then converted into kinetic energy during sport.
Foods can be stored as amino acids, glycogen and triglycerides as fuels which are motabalised
into ATP
ATP is the only usable form of energy for muscular contraction
Adeonisne- P - P - P one adenosine and 3 phosphates held by a high energy bond.
^ It is stored in the muscle cell
High energy bond Endothermic reaction- takes im energy
Broken down by Atpase into ADP adenosine -P- P (p +energy ) needs energy to resynthises P
Exothermic as it gives of energy
ATP Resynthesis
Atp stores are exhausted quickly only lasting 2-3 seconds
ATP must be constantly Resyntheised.
This when energy is absorbed to rebuild the high energy bond between ADP and a single
phosphate.
This energy is provided by 3 energy systems.
● ATP-PC
● Glycolytic
● Aerobic
, ATP - Pc System
Type Anearobic Strengths Weaknesses
fuel Phosocreatine Pc readily avaible Low ATP yield
No delay for 02 Small Pc stores
Site Sarcoplasm Simple rapid breakdown Leads to rapid fatigue
Provides energy for Very 8-10s
Enzyme Creatine kinase high intensity, Explosive
ATP yield 1
Stages Pc = pi + c + Energy
(coupleld Reaction) ADP +PI + energy = ADP
By products None
Duration + intensity 8-10s
Very high intensity
Fiber type FG/ IIb
Recovery EPOC Rapid recovery
Glycolytic/LA system
Type Anaerobic Strengths Weaknesses
fuel Glycogen, Glucose No oxygen delay Low Atp yield compared to 02
Relatively fast breakdown Fatiguing by product
Site Sacroplasm Lactic acid can be recyled <<PH- inhibits Enzymes
for fuel in future actvities Stimulates pain and fatigue
Enzyme GPP,PFK,LDH
ATP yield 2 for 1 mole of glycogen
Stages
(coupleld Reaction)
By products Lactic acid
Duration + intensity High intensity
30s - 3 mins
