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Muscle fatigue is not the same as muscle weakness, though weakness is an initial symptom. Despite a normal amount of force being generated at the start of activity, once muscle fatigue has set in and progressively worsens, if the individual persists in the exercise they will eventually lose their hand grip, or become unable to lift or push with ...
Delayed onset muscle soreness (DOMS) is the pain and stiffness felt in muscles after unaccustomed or strenuous exercise. The soreness is felt most strongly 24 to 72 ...
Abnormal muscle fatigue (premature fatigue and/or inability to get into second wind), muscle pain (myalgia), cramping or muscle stiffness during and/or after exercise, [citation needed] Shortness of breath ( dyspnea ), or rapid breathing ( tachypnea ), or heavy breathing ( hyperpnea ), or both (exercise hyperventilation ) [ citation needed ]
This meaning implies that the primary defect is within the muscle, as opposed to the nerves ("neuropathies" or "neurogenic" disorders) or elsewhere (e.g., the brain). This muscular defect typically results in myalgia (muscle pain), muscle weakness (reduced muscle force), or premature muscle fatigue (initially normal, but declining muscle force).
Prolonged fatigue is fatigue that persists for more than a month, and chronic fatigue is fatigue that lasts at least six consecutive months, which may be caused by a physical or psychological illness, or may be idiopathic (no known cause). [1] Chronic fatigue with a known cause is twice as common as idiopathic chronic fatigue. [6]
Cramp fasciculation syndrome (CFS) is a rare [1] peripheral nerve hyperexcitability disorder. It is more severe than the related (and common) disorder known as benign fasciculation syndrome; it causes fasciculations, cramps, pain, fatigue, and muscle stiffness similar to those seen in neuromyotonia (another related condition). [2]
Central nervous system fatigue, or central fatigue, is a form of fatigue that is associated with changes in the synaptic concentration of neurotransmitters within the central nervous system (CNS; including the brain and spinal cord) which affects exercise performance and muscle function and cannot be explained by peripheral factors that affect muscle function.
The International Journal of Fatigue is a monthly peer-reviewed scientific journal covering research, theory, and practice concerning the fatigue of materials and structures. The journal is published by Elsevier in affiliation with the European Structural Integrity Society .