PHYSIOLOGY
MUSCLE FATIGUE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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energy loss
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dehydration
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lack of sleep
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decrease in ATP production
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Detailed explanation-1: -Dehydration is one of the main contributors to fatigue according to a 2011 paper in the Journal of Sports Sciences (opens in new tab), and sweating can lead to significant losses of essential minerals such as sodium, magnesium and calcium, which can lead to greater muscle fatigue.
Detailed explanation-2: -Fatigue often develops when substrates for ATP generation are depleted and/or when metabolic by-products accumulate in contracting muscle and the blood. Reductions in intramuscular levels of ATP, phosphocreatine and glycogen, and low blood glucose (hypoglycemia) can impair skeletal muscle performance.
Detailed explanation-3: -During exercise the contracting muscles generate force or power and heat. So physical exercise is in fact a form of mechanical energy. This generated energy will deplete the energy stocks within the body. During exercise, metabolites and heat are generated, which affect the steady state of the internal environment.
Detailed explanation-4: -Intracellular acidosis due mainly to lactic acid accumulation has been regarded as the most important cause of skeletal muscle fatigue.