HUMAN PHYSIOLOGY
LOCOMOTION AND MOVEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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lactic acid
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glycogen
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creatine phosphate
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carbon dioxide
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Detailed explanation-1: -Lactic acid is formed and accumulated in the muscle under conditions of high energy demand, rapid fluctuations of the energy requirement and insufficient supply of O2. During intense exercise sustained to fatigue muscle pH decreases to about 6.4-6.6.
Detailed explanation-2: -Lactic Acid Buildup Causes Muscle Fatigue and Soreness. Anyone who has pushed themselves through an intense workout will be familiar with “feeling the burn”-that sensation of fatigue and pain that sets in when you subject your muscles to lifting heavy loads repeatedly or sprinting all-out.
Detailed explanation-3: -Certainly, repeated, high intensity contractions lead to muscle fatigue. Glycogenolysis and glycolysis can lead to lactic acidosis and disturbances to muscle and plasma pH.
Detailed explanation-4: -The accumulation of lactic acid in the muscles is responsible for muscle cramps.
Detailed explanation-5: -Muscle fatigue occurs due to the accumulation of Lactic acid.