I think you are talking about the effect of exercise on the human body. There's two types of respiration humans use, when exercising - aerobic respiration - when oxygen is plenty, thus when you are not panting and getting enough oxygen you are using the kind of respiration. It requires the prescence of oxygen and glucose and produces 38 ATP and carbon dioxide, which is is exhaled. The other respiration, when you are panting and not gettiong enough air, is called anaerobic respiration. It only requires the prescence of glucose and only produces 2 ATP and lactic acid, which attacks your muscles, making you feel fatigued and produces muscle pain. Hope this anmswers your question. Fun Fact: The more time it takes for your body to go into anaerobic respiration, the more fit you are ! :)
lactate accumulation
Depends on the circulatory system
Striated (or skeletal) muscle
Skeletal or voluntary muscle is capable of rapid contraction and is responsible for skeletal movement.
By a muscle that fails to relax completely resulting in the muscle going into spasm.
Muscle loss. Have you not been eating?
Skeletal muscles
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.
SKELETAL (:
Lactic Acid.
skeletal muscles
There has been no universal mechanism found to explain skeletal muscle fatigue. With the onset of intense exercise, muscle force has been shown to fall, which is often illustrated as a sign of fatigue. As ATP supplies the immediate energy to the muscle cell, the relationship between ATP and fatigue has been a topic of interest among researchers. During muscle contraction the majority of ATP is used for cross bridge cycling, ion pumps and transporters, and chemical signalling cascades. A fall in [ATP] would result in the development of rigor and goes against the viability of the cell. It is proposed that whole muscle [ATP] does not fall with repeated contraction, though there may be differences in [ATP] between fiber types with fatigue. Rather, fatigue is a protective mechanism by the muscle to preserve [ATP] accomplished by down regulating cellular processes that use ATP for energy
smooth muscle, cardiac muscle and most glands