energy systems. definition qenergy could be described as “ the ability to work”
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ENERGY SYSTEMSENERGY SYSTEMS
DEFINITIONDEFINITION
Energy could be described as“ the ability to work”
THE ENERGY CYCLETHE ENERGY CYCLECarbohydrate manufactured by plant and eaten by man.
Carbohydrate consumed
Digested - becomes glucoseand enters the blood.
Glucose rich blood arrivesat the pancreas stimulating
insulin.
Glucose not required for energyTurned into glycogen and stored
Blood level of glucosecorrect for current needs
Glucose used for energy
Blood glucose drops causingappetite to be stimulated
Carbohydrate consumed
ENERGY SUPPLYENERGY SUPPLY
• THE LIVING BODY REQUIRES A CONSTANT SUPPLYOF ENERGY IN ORDER TO FUNCTION - FOR MOVEMENT, GROWTH, REPAIR etc.
• THE IMMEDIATE SOURCE OF ENERGY COMES FROM THE ENERGY RICH MOLECULE ADENOSINE TRIPHOSPHATE(ATP) , WHICH IS STORED IN THE MUSCLE.
ENERGY SUPPLYENERGY SUPPLY
•IN ORDER TO MAINTAIN THE ENERGY SUPPLY(ATP) HAS TO BE RESYNTHESIZED.
•THE PROCESS OF BREAKING DOWN AND RESTRUCTURING (ATP) CAN OCCUR WITH OR WITHOUT THE USE OF OXYGEN.
ENERGY SYSTEMSENERGY SYSTEMS
Anaerobic (2 types) High intensity short duration This creates an (02) debt (has to be
repaid ) Uses compounds already stored in
the muscle as its fuel These are :-
phosphocreatineglycogen
ADENOSINE TRY PHOSPHATEADENOSINE TRY PHOSPHATE
THE BODIES ONLY FUEL FOR MUSCLE CONTRACTION
ONCE A MUSCLE CONTRACTION TAKESPLACE THE AT P MUST BE RESTORED INONE OF THREE WAYS.
Phosphate system Very short, high intensity,
“explosive” Activities e.g.. Heavy weights,short sprint, high jumping
The fuel is phosophocreatine (PC) stored for immediate use
ENERGY SYSTEMSENERGY SYSTEMS
PHOSPHATE SYSTEMPHOSPHATE SYSTEM
PC gives max 10 sec of effort but restored quickly 50% 30 secs 100% 2 mins
No waste products
ENERGY SYSTEMSENERGY SYSTEMS
Lactate system high intensity short duration
activitiese.g, heavy weights, body conditioningsustained sprint, uphill running
the fuel is :- glycogen stored in the muscle,liver & blood
ENERGY SYSTEMSENERGY SYSTEMS
LACTATE SYSTEMLACTATE SYSTEM
Fatigue 30 secs exhaustion 1 min Byproduct - lactic acid (incomplete
breakdown of glycogen) Lactic acid - toxin, partially
removedwithin a short time but around 2 hours to remove completely
ENERGY SYSTEMSENERGY SYSTEMS
Aerobic low intensity long duration activities
e.g, walking, swimming, jogging this system can produce large
amounts of energy this system uses (O2) when (O2) is
supplied at the same rate as it is used
ENERGY SYSTEMSENERGY SYSTEMS
AEROBIC SYSTEMAEROBIC SYSTEM
BEFORE LACTIC ACID PRODUCTION
This system uses carbohydrates (glycogen,) and fats
waste products - (CO2) & water can be easily removed
takes 2 - 3 mins to reach this state lasts 2 hours maximal work longer
sub maximal
ENERGY SYSTEMSENERGY SYSTEMS
ENERGY SYSTEMSENERGY SYSTEMS
EXPERIMENT
STAND UP SIT DOWNSTAND UP SIT DOWN
STAND UPTHEN SITDOWN.
WAIT 10SECCONDSTHENREPEAT
BURPEESBURPEES
START BURPEE EXERCISE AND CONTINUE FORAS LONG AS POSSIBLE.
RUN ON SPOTRUN ON SPOT
KEEP JOGGINGAT A SLOWSTEADY PACE
ENERGY SYSTEMSENERGY SYSTEMS
ENERGY SYSTEMSENERGY SYSTEMS
P.E.O.