The Role of Central Fatigue in Resistance and Endurance Exercises

1086 Words Feb 19th, 2018 4 Pages
Neuromuscular fatigue can be defined as a decline in performance that is usually determined by power generation capacity. During a static maximal contraction, force will decrease steadily and fatigue would be observed from the beginning of the exercise. Contrarily, in submaximal contractions, the target force is maintained for a long time. In this situation, the fatigue is defined as the inability in maintaining the force, even if the capacity of maximal force generation is impaired earlier during contraction. Neuromuscular fatigue is usually defined as a reduction of the capacity of maximal force generation [1]. Velstad (1997), defined neuromuscular fatigue as any exercise-induced reduction in the maximal capacity of force generation or output force. This definition allows us to define fatigue in different sports and various intensities. Moreover, there must be a distinction between the muscle weakness as a chronic disorder in force generation or output force and the acute effect of neuromuscular fatigue. So, it seems that neuromuscular fatigue develops differently depending on the muscle activity [5]. Fatigue was traditionally related to the metabolic occurrence of ending point during the exercise in which glycogen concentration of the muscle was depleted completely [6]. Furthermore, cardiovascular [7, 8] and metabolic load, and temperature adjustment are likely peripheral candidates for the fatigue outbreak during long exercises [9].
Sites of…
Open Document