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Study Nugget: Energy Systems

Posted by: Andrew  :  Category: Study Nugget

Rimonabant chemical structure Study Nugget: Energy Systems

The body has three ways that it produces energy.  Two of these are anaerobic (without oxygen) and the third is aerobic (with oxygen);

CREATINE PHOSPHATE (CP) SYSTEM

This energy system does not require oxygen, it’s very explosive, the intensity of the activity will be at about 95-100% MHR. It fatigues very quickly about 0-10 seconds. The activities that use this energy system are short and explosive, requiring short bursts of maximal effort; weightlifting, 100m sprint, golf swing, etc.

LACTIC SYSTEM

This is also an anaerobic, it is rapid (not as explosive as the CP system), the energy source comes in the form of glycogen and it produces a waste product called Lactate Acid (that burning sensation in the muscles), this system can go on for longer than the CP system around 1-3 mins. The level of intensity will be around 60-95% MHR.

OXYGEN SYSTEM

As it name states this is the aerobic energy system, so the speed of energy production is slow and not quick to fatigue. Its energy source is glycogen and fat. It occurs in low intensity activities up to 60% MHR; running a marathon, swimming, etc.


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