1.1.d. Aerobic and anaerobic exercise GapFill

When we exercise, we produce energy either aerobically (utilising oxygen) or  easilyanaerobicallysystematicallyeffectively (without oxygen). The predominant energy system used by the body depends on whether the exercise being completed can be satisfied by the contribution of oxygen delivery to provide the working muscle with energy. If the exercise demand is greater than that which can be satisfied by oxygen delivery, the body will predominantly be working  anaerobicallywith an oxygen debtwith EPOCefficiently. When oxygen can satisfy the demands for energy at the muscles, the body predominantly works aerobically.

Aerobic exercise can, therefore, be summarised as:

Activities such as long-distance running are predominantly supported by the aerobic system. This is because long-distance running is a  lowdifficultextremehigh-intensity exercise carried out over a long period of time.

In contrast, anaerobic exercise is exercise that is completed without the presence of  waterheliumoxygenmethane and can be summarised as:

Note that lactic acid is often a by-product of anaerobic exercise and is associated with the uncomfortable feelings we get during   highlowopencasual-intensity exercise over a short period of time. Examples of events that predominantly use the anaerobic system are the 100 m sprint and   weightliftingyogamarathonundemanding competitions. 

Some sports, such as rugby and boxing, use both   EPOCaerobiccarbon dioxide debthydrophobic and anaerobic systems more equally. Boxers require the   anaerobicEPOCcarbon dioxideaerobic system to provide powerful muscle contractions, but also require the   hydrophobicaerobiccarbon dioxideEPOC system to last the full 12 rounds without excessive fatigue. Rugby players require the   EPOCcarbon dioxidehydrophobicaerobic energy system for jogging into position and lasting the full 80 minutes, but will utilise the   EPOCcarbon dioxideaerobicanaerobic energy system for short bursts in attack and for rucking/mauling.