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KEY WORDS KEY WORDS A2 Chapter 2 - ANAEROBIC ENERGY SYSTEMS
Anaerobic energy system: a process that provides resynthesis of ATP without the use of oxygen.
Coupled reaction: a chemical reaction in which energy is transferred from one side of the reaction to
Phosphocreatine: an energy rich compound of creatine and phosphoric acid, found in muscle cells.
Lactate anaerobic energy system: the system that produces energy for ATP resynthesis by
breaking down glucose without oxygen and producing lactate as a by-product.
Lactate threshold: the level of exercise intensity at which you are producing more lactate than can
be removed or resynthesized; lactic acid starts to accumulate in the bloodstream and muscle, owing
to excess hydrogen combining with pyruvate to form lactate.
Muscle fatigue: the decline in muscle function as muscles are used intensively and repeatedly.
Onset of blood lactacid accumulation (OBLA): the point at which lactic acid (lactate) starts to
accumulate within the blood; normally a rapid increase follows.
Lactate tolerance: the ability to withstand the effects of lactic acid accumulation.
Creatine: substance formed by the body that stores energy and is used as an energy source for ATP
Active recovery: the use of light energy to aid recovery.