Physical Education AOS 2: Energy Systems

VO2

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

VO2 Max

The MAXIMUM oxygen consumption in one minute. Can be measured as an absolute (L/min) or relative measurement (mL/min)

Oxygen deficit

When oxygen supply is less than oxygen demand

Steady state

When oxygen supply meets oxygen demand

Excess Post-Exercise Oxygen Consumption (EPOC)

When oxygen supply is greater than oxygen demand post exercise

Acute

The immediate physiological response(s) to meet the demand of exercise

Adenosine Triphosphate (ATP)

The high energy compound required for muscular contraction

ATP-CP Energy System

An anerobic energy system, that breaks down creatine phosphate (CP) to produce energy at a rapid rate.

Anaerobic Glycolysis Energy System

the incomplete breakdown of glycogen, in the absence of oxygen to produce energy.

Aerobic Energy System

The complete breakdown of fuels in the presence of oxygen to produce energy

Interplay

The three energy systems working together to produce the energy required for the activity being undertaken

Active Recovery

Moving at a low intensity immediately post exercise

Passive Recovery

Resting (sitting/standing) immediately post exercise

Fuel Depletion

Significantly low levels of fuel that negatively impact performance

Accumulation of Metabolic By-Products

When the production of a by-product exceeds its removal inhibiting contractions and negatively impacting performance

Thermoregulatory Fatigue

The fatigue resulting from an inability to maintain a stable body temperature

ATP-CP Function

Very fast rate, very low yield, very high intensity, very short duration (key word: explosive)

Anerobic Glycolysis Function

Fast rate, low yield, high intensity, short duration (key word: Repeated)

Aerobic Function

Slow rate, high yield, low intensity, long duration (key word: sustained)