Obesity, but not hypohydration, mediates changes in mental task load during passive heating in females

The independent effects of hypohydration and hyperthermia on cognition and mood is unclear since the two stresses often confound each other. Further, it is unknown if obese individuals have the same impairments during hyperthermia and hypohydration that is often observed in non-obese individuals. Th...

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Bibliographic Details
Published in:PeerJ (San Francisco, CA) CA), 2018-08, Vol.6, p.e5394-e5394, Article e5394
Main Authors: Caldwell, Aaron R, Burchfield, Jenna, Moyen, Nicole E, Tucker, Matthew A, Butts, Cory L, Elbin, R J, Ganio, Matthew S
Format: Article
Language:English
Subjects:
Body fat
Body mass
Cognition & reasoning
Cognitive ability
Concussion
Dehydration
Females
Fever
Heat stress
Hydration
Hyperthermia
ImPACT
Impact tests
Kinesiology
Memory
Mood
Mood state
Nutrition
Obesity
Older people
Physiology
Public Health
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Summary:The independent effects of hypohydration and hyperthermia on cognition and mood is unclear since the two stresses often confound each other. Further, it is unknown if obese individuals have the same impairments during hyperthermia and hypohydration that is often observed in non-obese individuals. The current study was designed to assess the independent and combined effects of mild hypohydration and hyperthermia on cognition, mood, and mental task load in obese and non-obese females. Twenty-one healthy females participated in two passive heating trials, wherein they were either euhydrated or hypohydrated prior to and throughout passive heating. Cognition (ImPACT), mental task load (NASA-TLX), and mood (Brunel Mood Scale; BRUMS) were measured before and after a 1.0 °C increase in core temperature (T ). After a 1.0 °C T elevation, hypohydration resulted in greater (  
ISSN:2167-8359
2167-8359
DOI:10.7717/peerj.5394