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Muscle fatigues is caused by high-intensity exercises. Lactate is built up, the blood vessels are compressed by strong contractions, acetylcholine becomes depleted, enzyme activity is altered, and the ions become imbalanced.

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7y ago
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13y ago

The cells in your muscles use ATP adenosine triphosphate to store energy (think of ATP molecules as mini reusable chemical batteries). ATP is normally generated in a long aerobic process (uses oxygen) called the citric acid cycle. However, our cells are only capable of storing enough ATP for a few seconds of strain, before they are required to switch to a type of fermentation which is faster than the aerobic method and requires less oxygen, but is drastically less efficient, and produces several byproducts. Prolonged strain to muscles which are unaccustomed to it can lead to an energy shortage of sorts, as the body struggles to keep up with ATP demands. If you have built up your muscles for endurance activities, they have a greater amount of blood vessels formed, and can sustain aerobic metabolism longer.

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14y ago

lactic acid that builds up in muscle cells

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Q: What causes muscle fatigue?
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Related questions

What causes muscle fatigue and how do you know if you are expreiencing muscle fatigue?

By a muscle that fails to relax completely resulting in the muscle going into spasm.


What causes a muscle to lose its ability to contract?

Muscle loss. Have you not been eating?


What inhibits muscular contraction?

Muscle fatigue has a number of causes including ion imbalance within the muscle or nervous fatigue. And most importantly, from the accumulation of lactic acid in the muscle.


What chemical build up causes muscle fatigue and muscle cramps?

Lactic Acid.


When fermentation occurs in muscle cells muscle fatigue is called by the production of?

Lactic acid builds up and causes muscle burn.


What is fibermyosis?

Fibermyosis is a syndrome that causes chronic muscle pain and fatigue. Sometimes it can cause weakening muscle pain.


What substance causes pain in the muscle after hard work?

Lactic acid. While it doesn't actually cause pain by itself (it causes muscle fatigue), a buildup of it can.


Explain what causes oxygen debt and muscle fatigue?

The production of lactic acid anaerobically...


How does calcium affect muscle fatigue?

Muscle fatigue results from relative deficit of ATP.calium does not affect muscle fatigue


List and explain three possible causes of muscle fatigue?

Lactic Acid Repititive Muscle monement Muscle non relaxed for long periods of time


What causes muscle colds?

There is not an individual condition called a muscle cold. What people call a muscle cold is actually the muscle soreness and fatigue associated with a flu. A flu is caused by a virus.


Inability of muscle fibers to contract after a long period of contraction?

muscle fatigue