Obesity, but not hypohydration, mediates changes in mental task load during passive heating in females
Caldwell AR, Burchfield J, Moyen NE, Tucker MA, Butts CL, Elbin RJ, Ganio MS
PeerJ · 4 citations
How it was studied
- Design
- Randomized controlled trial (classified by our AI screen)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Independent funding
- University or hospital
- University of Arkansas
- University or hospital
- University of Arkansas’ Honors College
Based on 2 listed funder(s) and full-text disclosure statement.
Publication
- Published
- 2018-08-16 · PeerJ · vol. 6 · p. e5394
- Publisher
- PeerJ, Inc.
- Cited
- 6 citations · more than 56% of similar papers · 0.3× the field average
- References
- 59 works
- Access
- Open access (journal) · CC-BY
- Research areas
- Thermoregulation and physiological responses · Climate Change and Health Impacts · Spaceflight effects on biology
- Keywords
- Mood, Hyperthermia, Medicine, Cognition, Obesity, Internal medicine, Physical therapy, Psychiatry
7 authors
From US
- Aaron R. CaldwellUniversity of Arkansas at Fayetteville
- Jenna M. BurchfieldUniversity of Arkansas at Fayetteville
- Nicole E. MoyenUniversity of Arkansas at Fayetteville
- Matthew A. TuckerAugusta University; Prevention Institute; University of Arkansas at Fayetteville
- Cory L. ButtsUniversity of Arkansas at Fayetteville
- R.J. ElbinUniversity of Arkansas at Fayetteville
Abstract
Background
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.
Methods
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 (TC).
Results
After a 1.0 °C TC elevation, hypohydration resulted in greater (p p p > 0.05). Hyperthermia, regardless of hydration status, impaired (∼5 A.U) measures of memory-based cognition (verbal and visual memory), and increased mental task load, while worsening mood (p p p > 0.05).
Conclusion
These data indicate that hyperthermia independently impairs memory-based aspects of cognitive performance, mental task load, and leads to a negative mood state. Mild hypohydration did not exacerbate the effects of hyperthermia. However, obese individuals had increased mental task load during hyperthermia.
Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY).
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