Impact of Elevated Core Body Temperature on Attention Networks

Liu, Kai; Jiang, Qingjun; Li, Li; Li, Bo; Yang, Zhen; Qian, Shaowen; Li, Min; Sun, Gang

doi:10.1097/wnn.0000000000000078

Cited by 4 publications

(2 citation statements)

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“…Therefore, the lower core temperature observed with pre-cooling may have, in part, resulted in a lower brain temperature and greater cerebral blood flow, contributing to the improved visual discrimination accuracy observed in the present study, as it has been shown that discriminatory tasks can be negatively affected by heat stress (Cain et al, 2000). Furthermore, executive control of attention has been shown to deteriorate linearly with a rise in core body temperature and non-linearly with longer passive heat exposure (Liu et al, 2015), suggesting that individuals perform "less effectively" when in a hot environment.…”

Section: Discussionmentioning

confidence: 99%

Pre-cooling moderately enhances visual discrimination during exercise in the heat

Clarke

Duncan

Smith

et al. 2016

Journal of Sports Sciences

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Section: Discussionmentioning

confidence: 99%

Pre-cooling moderately enhances visual discrimination during exercise in the heat

Clarke

Duncan

Smith

et al. 2016

Journal of Sports Sciences

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“…In individuals with hyperthermia, the brain temperature may become higher than the core temperature [150], and cognitive effort cannot be sustained over time [90,151]. To address this problem and protect the brain, cooling methods such as head and neck cooling [120,148] may be of primary importance for sport performance and/or medical assistance.…”

Section: Per-cooling and Cognitive Performancementioning

confidence: 99%

Per-Cooling (Using Cooling Systems during Physical Exercise) Enhances Physical and Cognitive Performances in Hot Environments. A Narrative Review

Douzi

Dupuy

Theurot

et al. 2020

IJERPH

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There are many important sport events that are organized in environments with a very hot ambient temperature (Summer Olympics, FIFA World Cup, Tour de France, etc.) and in hot locations (e.g., Qatar). Additionally, in the context of global warming and heat wave periods, athletes are often subjected to hot ambient temperatures. It is known that exercising in the heat induces disturbances that may provoke premature fatigue and negatively affects overall performance in both endurance and high intensity exercises. Deterioration in several cognitive functions may also occur, and individuals may be at risk for heat illnesses. To train, perform, work and recover and in a safe and effective way, cooling strategies have been proposed and have been routinely applied before, during and after exercise. However, there is a limited understanding of the influences of per-cooling on performance, and it is the subject of the present review. This work examines the influences of per-cooling of different areas of the body on performance in terms of intense short-term exercises (“anaerobic” exercises), endurance exercises (“aerobic” exercises), and cognitive functioning and provides detailed strategies that can be applied when individuals train and/or perform in high ambient temperatures.

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Cognitive Functioning and Heat Strain: Performance Responses and Protective Strategies

et al. 2016

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Despite the predominance of research on physical performance in the heat, many activities require high cognitive functioning for optimal performance (i.e. decision making) and/or health purposes (i.e. injury risk). Prolonged periods of demanding cognitive activity or exercise-induced fatigue will incur altered cognitive functioning. The addition of hot environmental conditions will exacerbate poor cognitive functioning and negatively affect performance outcomes. The present paper attempts to extract consistent themes from the heat-cognition literature to explore cognitive performance as a function of the level of heat stress encountered. More specifically, experimental studies investigating cognitive performance in conditions of hyperthermia, often via the completion of computerised tasks (i.e. cognitive tests), are used to better understand the relationship between endogenous thermal load and cognitive performance. The existence of an inverted U-shaped relationship between hyperthermia development and cognitive performance is suggested, and highlights core temperatures of ~38.5 °C as the potential 'threshold' for hyperthermia-induced negative cognitive performance. From this perspective, interventions to slow or blunt thermal loads and protect both task- and hyperthermia-related changes in task performances (e.g. cooling strategies) could be used to great benefit and potentially preserve cognitive performance during heat strain.

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Impact of Elevated Core Body Temperature on Attention Networks

Abstract: Different attentional abilities had different sensitivities to thermal stress. Executive control of attention deteriorated linearly with a rise in Tcore within the normal physiologic range, but deteriorated nonlinearly with longer passive heat exposure.

Cited by 4 publications

References 0 publications

Pre-cooling moderately enhances visual discrimination during exercise in the heat

Pre-cooling moderately enhances visual discrimination during exercise in the heat

Per-Cooling (Using Cooling Systems during Physical Exercise) Enhances Physical and Cognitive Performances in Hot Environments. A Narrative Review

Cognitive Functioning and Heat Strain: Performance Responses and Protective Strategies

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