Neurophysiological effects of exercise in the heat

@article{Roelands2015NeurophysiologicalEO,
  title={Neurophysiological effects of exercise in the heat},
  author={Bart Roelands and Kevin De Pauw and Romain Meeusen},
  journal={Scandinavian Journal of Medicine \& Science in Sports},
  year={2015},
  volume={25}
}
Fatigue during prolonged exercise is a multifactorial phenomenon. The complex interplay between factors originating from both the periphery and the brain will determine the onset of fatigue. In recent years, electrophysiological and imaging tools have been fine‐tuned, allowing for an improved understanding of what happens in the brain. In the first part of the review, we present literature that studied the changes in electrocortical activity during and after exercise in normal and high ambient… 
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25 Citations

Pharmacological Intervention of Brain Neurotransmission Affects Exercise Capacity
Fatigue: Is it all neurochemistry?
TLDR
The aim of the present narrative review paper is to look at the mechanisms involved in the occurrence of fatigue during prolonged exercise, predominantly from a brain neurochemical point of view, and can conclude that brain neurochemistry is clearly involvement in the complex regulation of fatigue.
Neural Contributions to Muscle Fatigue: From the Brain to the Muscle and Back Again.
: During exercise, there is a progressive reduction in the ability to produce muscle force. Processes within the nervous system as well as within the muscles contribute to this fatigue. In addition…
The role of brain catecholamines in exercise-induced oculomotor fatigue
TLDR
Overall, the findings support the hypothesis that central catecholamines are involved in mediating central fatigue during prolonged exercise, which constitutes the first comprehensive investigation into the influence of exercise fatigue on the human visual system.
Neurophysiological Responses to Rest and Fatiguing Exercise in Severe Hypoxia in Healthy Humans
TLDR
In acute severe hypoxia, whole-body exercise tolerance is impaired through oxygensensitive mechanisms which exacerbate central fatigue, and the acute response can be alleviated following both chronic and intermittent severe Hypoxia.
The effects of exercise at different temperatures on cognitive function: A systematic review
The effect of 6 h of running on brain activity, mood, and cognitive performance
TLDR
The fact that self-reported flow experience only increased during the first hour of running before decreasing, leads us to assume that changes in cortical activity, and the experience of flow may not be linked as previously supposed.
Individual Differences in Cognitive Performance Regulated by Deep-Brain Activity during Mild Passive Hyperthermia and Neck Cooling
Hyperthermia-induced decline in cognitive performance is a moderate complication that poses challenges to the maintenance of safety. Although the underlying mechanism can be attributed to the…
Effect of constant, predictable, and unpredictable motor tasks on motor performance and blood markers of stress
TLDR
It was found that IIC increased central and peripheral fatigue, force sensation, and Tmu, and decreased absolute and constant error without visual feedback, but did not affect motor variability.
Endurance exercise‐induced and mental fatigue and the brain
TLDR
The noradrenergic neurotransmitter system hastens central fatigue during prolonged exercise, a finding that coincides with a faster rate of increase in the rating of perceived exertion.
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References

SHOWING 1-10 OF 114 REFERENCES
Cerebral Changes During Exercise in the Heat
TLDR
The observation that exercise-induced hyperthermia reduces the central activation percentage during maximal isometricmuscle contractions supports the idea that central fatigue is involved in the aetiology ofhyperthermia-induced fatigue.
Alterations in Central Fatigue by Pharmacological Manipulations of Neurotransmitters in Normal and High Ambient Temperature
TLDR
Evidence from different studies suggests that it is very unlikely that one neurotransmitter system is responsible for the appearance of central fatigue, with the most important role possibly being for the catecholamines dopamine and noradrenaline.
Central fatigue and neurotransmitters, can thermoregulation be manipulated?
TLDR
Dopaminergic reuptake inhibition appears to counteract hyperthermia‐induced fatigue in 30 °C, while noradrenergic neurotransmission shows negative effects on performance in both normal and high temperature, and serotonergic manipulations did not lead to significant changes in performance.
The brain and fatigue: New opportunities for nutritional interventions?
TLDR
The possibility that amino acid ingestion may help to attenuate a loss in cognitive function during the later stages of a game would be desirable, even in the absence of no apparent benefit to physical performance.
Brain activity and fatigue during prolonged exercise in the heat
We hypothesized that fatigue due to hyperthermia during prolonged exercise in the heat is in part related to alterations in frontal cortical brain activity. The electroencephalographic activity (EEG)…
Perceived exertion is associated with an altered brain activity during exercise with progressive hyperthermia.
TLDR
The linear correlation among core temperature, EEG frequency index, and RPE indicates that alterations in cerebral activity may be associated with the hyperthermia-induced development of fatigue during prolonged exercise in hot environments.
Effects of noradrenaline and dopamine on supraspinal fatigue in well-trained men.
TLDR
It is suggested that noradrenaline, but not dopamine reuptake inhibition, contributes to the development of central/supraspinal fatigue after a prolonged cycling exercise performed in temperate conditions.
Possible mechanisms of central nervous system fatigue during exercise.
TLDR
Clearly fatigue during prolonged exercise is influenced by multiple CNS and peripheral factors, and elucidation of how CNS influences affect fatigue is relevant for achieving optimal muscular performance in athletics as well as everyday life.
Amino acids and the brain: do they play a role in "central fatigue"?
  • R. Meeusen, P. Watson
  • Biology
    International journal of sport nutrition and exercise metabolism
  • 2007
TLDR
There is good evidence that brain neurotransmitters can play a role in the development of fatigue during prolonged exercise, but nutritional manipulation of these systems through the provision of amino acids has proven largely unsuccessful.
Changes in EEG activity before and after exhaustive exercise in sedentary women in neutral and hot environments.
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