Body temperatures, thermal comfort, and neuropsychological responses to air temperatures ranging between 12°C and 39°C in people with multiple sclerosis

Christogianni, A, Bibb, R ORCID logoORCID: https://orcid.org/0000-0002-3975-389X and Filingeri, D, 2023. Body temperatures, thermal comfort, and neuropsychological responses to air temperatures ranging between 12°C and 39°C in people with multiple sclerosis. Physiology and Behavior, 266: 114179. ISSN 0031-9384

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Abstract

The negative effects of thermal stress on Multiple Sclerosis (MS)’ symptoms have long been known. However, the underlying mechanisms of MS heat and cold intolerance remain unclear. The aim of this study was to evaluate body temperatures, thermal comfort, and neuropsychological responses to air temperatures between 12 and 39 °C in people with MS compared to healthy controls (CTR). Twelve MS (5 males/7 females; age: 48.3 ± 10.8 years; EDSS range: 1–7) and 11 CTR participants (4 males /7 females; age: 47.5 ± 11.3 years) underwent two 50-min trials in a climatic chamber. Air temperature was ramped from 24 °C to either 39 °C (HEAT) or 12 °C (COLD) and we continuously monitored participants’ mean skin (Tsk) and rectal temperatures (Trec), heart rate and mean arterial pressure. We recorded participants’ self-reported thermal sensation and comfort, mental and physical fatigue, and we assessed their cognitive performance (information processing). Changes in mean Tsk and Trec did not differ between MS and CTR neither during HEAT nor COLD. However, at the end of the HEAT trial, 83% of MS participants and 36% of CTR participants reported being “uncomfortable”. Furthermore, self-reports of mental and physical fatigue increased significantly in MS but not CTR (p < 0.05), during both HEAT and COLD. Information processing was lower in MS vs. CTR (p < 0.05); yet this cognitive impairment was not exacerbated by HEAT nor COLD (p > 0.05). Our findings indicate that neuropsychological factors (i.e. discomfort and fatigue) could contribute to MS heat and cold intolerance in the absence of deficits in the control of body temperature.

Item Type: Journal article
Publication Title: Physiology and Behavior
Creators: Christogianni, A., Bibb, R. and Filingeri, D.
Publisher: Elsevier
Date: July 2023
Volume: 266
ISSN: 0031-9384
Identifiers:
Number
Type
10.1016/j.physbeh.2023.114179
DOI
S0031938423001075
Publisher Item Identifier
1804967
Other
Rights: This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Divisions: Schools > Nottingham School of Art & Design
Record created by: Jonathan Gallacher
Date Added: 20 Sep 2023 09:16
Last Modified: 20 Sep 2023 10:14
URI: https://irep.ntu.ac.uk/id/eprint/49757

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