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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.
Fatigue in a medical context is used to cover experiences of low energy that are not caused by normal life. [2] [3]A 2021 review proposed a definition for fatigue as a starting point for discussion: "A multi-dimensional phenomenon in which the biophysiological, cognitive, motivational and emotional state of the body is affected resulting in significant impairment of the individual's ability to ...
Lethargy is a state of tiredness, sleepiness, weariness, fatigue, sluggishness, or lack of energy. It can be accompanied by depression , decreased motivation, or apathy . Lethargy can be a normal response to inadequate sleep, overexertion, overworking, stress, lack of exercise, improper nutrition, drug abuse, boredom , or a symptom of an ...
Knowing whether you’re dealing with tiredness or fatigue symptoms can inform your recovery and your training, leading to better performance.
You’re tossing and turning, counting sheep for what seems like forever, and still, sleep won’t come. You’re tired but can’t sleep and wonder, Why can’t I sleep? It could be insomnia. In ...
Each of the maladies can target different groups and age ranges, but here’s what you need to know to avoid contracting these illnesses and some tips for remaining healthy. ... Fatigue. Muscle or ...
It can be a result of vigorous exercise, but abnormal fatigue may be caused by barriers to or interference with the different stages of muscle contraction. There are two main causes of muscle fatigue: the limitations of a nerve ’s ability to generate a sustained signal (neural fatigue); and the reduced ability of the muscle fiber to contract ...
Of course, if you're feeling sick, it’s a good idea to test yourself so you can know the full picture of what you’re dealing with, ... Fatigue. Muscle or body aches. Headache.