Therefore, we breathe deeply and rapidly for a period of time, immediately following an intense period of exercise, repaying the oxygen debt. The recovery time was 10 min. The different types of exercises elicit different patterns of neural activity to muscle resulting in specific adaptation. High intensity strength activities, such as weight lifting and bodybuilding, induce hypertrophy of the muscle with an increase in strength. Endurance exercises, such as swimming and running, increase the capacity of muscle for aerobic metabolism with an increase in endurance.
Muscle fatigue is defined as a loss of work-output leading to a reduced performance of a given task.
During prolonged endurance exercise, e.g. marathon-running, depletion of muscle glycogen, decrease in blood glucose, dehydration, or increase in body temperature contribute to fatigue. During intense muscular activity, e.g. short-distance running, lactic acid is formed via anaerobic glycolysis. Breakdown of adenosine triphosphate during contraction of working muscle. Muscle Physiology . Machina Carnis .