Neurophysiological effects of exercise in the heat

  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},
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… 

Fatigue: Is it all neurochemistry?

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

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

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 effect of 6 h of running on brain activity, mood, and cognitive performance

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

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.

Topical and Ingested Cooling Methodologies for Endurance Exercise Performance in the Heat

Current evidence suggests that whilst other strategies ameliorate physiological or perceptual responses throughout endurance exercise in hot conditions, ingesting cooling aids before and during exercise provides a small benefit, which is of practical significance to athletes’ time trial performance.

Training and competing in the heat

The issue presents the most up-to-date research relating to the mechanisms modulating performance in the heat, the strategies that can be utilized to attenuate the impairment in performance, and various methods to enhance recovery.



Cerebral Changes During Exercise in the Heat

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

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?

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?

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.

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.

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.

Amino acids and the brain: do they play a role in "central fatigue"?

  • R. MeeusenP. Watson
  • Biology
    International journal of sport nutrition and exercise metabolism
  • 2007
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.

Primary motor cortex activity is elevated with incremental exercise intensity

Performance in the heat-physiological factors of importance for hyperthermia-induced fatigue.

An integrative model is proposed that may help understanding the interplay among factors, but also acknowledging that the influence from a given factor depends on the exercise hyperthermia situation.