PE Unit 3 Movement Skills & Energy for Physical Activity, Sport & Exercise

VO2

The amount of oxygen the body takes in, transports and uses in one minute.

VO2 Max

The MAXIMUM amount of oxygen the body takes in, transports & uses in one minute.

a-VO2 diff

The difference in the amount of oxygen in arterial blood & venous blood.

Oxygen Deficit

When oxygen supply is less than oxygen demand.

Steady State

When oxygen supply is equal to oxygen demand.

EPOC

Excess post-exercise oxygen consumption.

When oxygen supply is greater than oxygen demand post exercise.

EPOC Fast Replenishment

Recovery Time: 3-5 mins

ATP & phosphocreatine stores are restored in the working muscles groups, restoring oxygen levels in myoglobin & haemoglobin, reoxygenation of blood.

EPOC Slow Replenishment

Recovery Time: 30mins - 48hrs or more

• H ions are removed from the muscles

• Thermoregulation by reducing core body temperature to pre-exercise levels via sweating & increased blood flow to the skin

• Lactic acid is broken down into CO2 & H2O

• Starting muscle repair

Aerobic Energy Systems

Body’s long term energy pathway that breaks down fuels using oxygen to resynthesized ATP.

Anaerobic Energy Systems

A way the body makes ATP quickly for high intensity movement without using oxygen.

Respiratory Rate

The number of breaths a person takes per minute.

Tidal Volume

The amount of air that moves in & out of the lungs each breath.