NUTRITION
SPORTS NUTRITION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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an increase in blood glucose and muscle glycogen
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a decrease in blood glucose and muscle glycogen
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a decrease in lactic acid and creatine phosphate
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None of the above
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Detailed explanation-1: -Lactic acid is a byproduct of anaerobic metabolism, in which the body produces energy without using oxygen. Since the discovery of lactic acid, the popular notion has been that it is responsible for muscle fatigue and also tissue damage induced by the lactic acid following an intense workout.
Detailed explanation-2: -Muscle fatigue has a number of possible causes including impaired blood flow, ion imbalance within the muscle, nervous fatigue, loss of desire to continue, and most importantly, the accumulation of lactic acid in the muscle.
Detailed explanation-3: -Conversely, the depletion of muscle glycogen causes fatigue. When muscle glycogen stores are low, muscle cells cannot produce ATP rapidly enough to maintain exercise intensity, 73 the very definition of fatigue.