ENERGY

ENERGY• The body needs energy to survive• The only form of energy the body uses is

called ‘ATP’• There are 3 (energy systems) ways in which

the body can create ATP• Intensity of exercise depends on which of the

3 systems is used to supply the fuel for ATP production

ENERGY SYSTEMSThere are 3 energy systems

1.Creatine Phosphate2.Lactic Acid3.Aerobic

Creatine Phosphate• Supplies energy very quickly• Does not require oxygen so is classed as

anaerobic• Your muscles only stores around 10 seconds

worth of creatine phosphate before it is all used up

Lactic Acid• Supplies energy quickly but not as fast as C.P. • Stores for this energy production are higher

from 10 seconds 40 seconds• The waste product from this system Lactic

Acid makes the muscles feel sore and tired and will eventually stop

• This system is also anaerobic

Aerobic• Supplies energy a lot slower than the other

two systems• However this system can supply energy for as

long as required so long as there is food than can be used to create the energy

• This system requires oxygen which is the reason why its the slowest reaction

• This is known as Aerobic

AEROBIC/ANAEROBIC

Aerobic: Requires oxygen in a reaction

Anaerobic: No oxygen required for reaction

What do these two terms mean?

AEROBIC ACTIVITIES• FOOTBALL• MARATHON• TOUR DE FRANCE• BASKETBALL• 400M SWIMMING

ANAEROBIC ACTIVITIES• 100M• WEIGHTLIFTING• GYMNASTICS• SHOT PUTT• 50M SWIMMING• 400M RUNNING

INTENSITY OF ACTIVITYSports require you to work at different speeds, intensity and durations.

A way to measure intensity is by how much energy they use. This can be measured in Kilocalories per hour

INTENSITY OF EXERICSE• 100m sprint• Marathon• Tour de France • Basketball• Squash• Swimming (recreational) • Tennis • Shot putt• Weightlifting• Javelin • Walking

HIGHEST INTENSITY

LOWEST INTENSITY