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The Mechanisms of fatigue, including neuromuscular fatigue and list the effects of metabolites (lactate/carbon dioxide)

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  • Essay length: 1432 words
  • Submitted: 17/08/2006
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AS and A Level Anatomy & Physiology

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IVA - Task 4

Fatigue can be described as a 'generic term used to explain feelings of muscular tiredness or laboured breathing during exercise' (Wesson et al, 2001). During exercise a performer will reach a point where they can no longer continue exercising at the same intensity this can also be defined as fatigue. Fatigue will always result in the decrease of performance. Fatigue can effect the body in either two ways; chemically, this is where the nervous actions of the body become disrupted this is called neural fatigue. Another way in which the body can be affected is mechanically, this is the disturbance of physiological functioning this is called muscular fatigue. Neural and muscular fatigue combine together to produce neuromuscular fatigue. Fatigue can be caused by various different factors.

An insufficient source of ATP can cause fatigue.

As ATP is required for all muscle actions when ATP is no longer available performance then stops, therefore a lack of ATP is responsible for muscular fatigue. A sporting example of when this occurs is at the end of a 200m sprint.

Depletion of fuels.

In order for ATP generation to occur and

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