Ice slurry ingestion reduces human brain temperature measured using non-invasive magnetic resonance spectroscopy

Abstract We previously reported that ice slurry ingestion reduced forehead skin temperature, thereby potentially reducing brain temperature (Tbrain). Therefore, in the current study, we investigated the effect of ice slurry ingestion on Tbrain using proton magnetic resonance spectroscopy, which is a...

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Autores principales:	Sumire Onitsuka, Daisuke Nakamura, Takahiro Onishi, Takuma Arimitsu, Hideyuki Takahashi, Hiroshi Hasegawa
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1f176c49b01b4fc0a7f02b0010522fac
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spelling	oai:doaj.org-article:1f176c49b01b4fc0a7f02b0010522fac2021-12-02T11:41:25ZIce slurry ingestion reduces human brain temperature measured using non-invasive magnetic resonance spectroscopy10.1038/s41598-018-21086-62045-2322https://doaj.org/article/1f176c49b01b4fc0a7f02b0010522fac2018-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-21086-6https://doaj.org/toc/2045-2322Abstract We previously reported that ice slurry ingestion reduced forehead skin temperature, thereby potentially reducing brain temperature (Tbrain). Therefore, in the current study, we investigated the effect of ice slurry ingestion on Tbrain using proton magnetic resonance spectroscopy, which is a robust, non-invasive method. Eight male participants ingested 7.5 g/kg of either a thermoneutral drink (37 °C; CON) or ice slurry (−1 °C; ICE) for about 5 min following a 15-min baseline period. Then, participants remained at rest for 30 min. As physiological indices, Tbrain, rectal temperature (Tre), mean skin temperature, nude body mass, and urine specific gravity were measured. Subjective thermal sensation (TS) and thermal comfort (TC) were measured before and after the experiment. Tbrain and Tre significantly reduced after ingestion of ICE compared with after ingestion of CON, and there was a significant correlation between Tbrain and Tre. The other physiological indices were not significantly different between beverage conditions. TS and TC were significantly lower with ICE than with CON (p < 0.05). These results indicate that ice slurry ingestion can cool the brain, as well as the body’s core.Sumire OnitsukaDaisuke NakamuraTakahiro OnishiTakuma ArimitsuHideyuki TakahashiHiroshi HasegawaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-7 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sumire Onitsuka Daisuke Nakamura Takahiro Onishi Takuma Arimitsu Hideyuki Takahashi Hiroshi Hasegawa Ice slurry ingestion reduces human brain temperature measured using non-invasive magnetic resonance spectroscopy
description	Abstract We previously reported that ice slurry ingestion reduced forehead skin temperature, thereby potentially reducing brain temperature (Tbrain). Therefore, in the current study, we investigated the effect of ice slurry ingestion on Tbrain using proton magnetic resonance spectroscopy, which is a robust, non-invasive method. Eight male participants ingested 7.5 g/kg of either a thermoneutral drink (37 °C; CON) or ice slurry (−1 °C; ICE) for about 5 min following a 15-min baseline period. Then, participants remained at rest for 30 min. As physiological indices, Tbrain, rectal temperature (Tre), mean skin temperature, nude body mass, and urine specific gravity were measured. Subjective thermal sensation (TS) and thermal comfort (TC) were measured before and after the experiment. Tbrain and Tre significantly reduced after ingestion of ICE compared with after ingestion of CON, and there was a significant correlation between Tbrain and Tre. The other physiological indices were not significantly different between beverage conditions. TS and TC were significantly lower with ICE than with CON (p < 0.05). These results indicate that ice slurry ingestion can cool the brain, as well as the body’s core.
format	article
author	Sumire Onitsuka Daisuke Nakamura Takahiro Onishi Takuma Arimitsu Hideyuki Takahashi Hiroshi Hasegawa
author_facet	Sumire Onitsuka Daisuke Nakamura Takahiro Onishi Takuma Arimitsu Hideyuki Takahashi Hiroshi Hasegawa
author_sort	Sumire Onitsuka
title	Ice slurry ingestion reduces human brain temperature measured using non-invasive magnetic resonance spectroscopy
title_short	Ice slurry ingestion reduces human brain temperature measured using non-invasive magnetic resonance spectroscopy
title_full	Ice slurry ingestion reduces human brain temperature measured using non-invasive magnetic resonance spectroscopy
title_fullStr	Ice slurry ingestion reduces human brain temperature measured using non-invasive magnetic resonance spectroscopy
title_full_unstemmed	Ice slurry ingestion reduces human brain temperature measured using non-invasive magnetic resonance spectroscopy
title_sort	ice slurry ingestion reduces human brain temperature measured using non-invasive magnetic resonance spectroscopy
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/1f176c49b01b4fc0a7f02b0010522fac
work_keys_str_mv	AT sumireonitsuka iceslurryingestionreduceshumanbraintemperaturemeasuredusingnoninvasivemagneticresonancespectroscopy AT daisukenakamura iceslurryingestionreduceshumanbraintemperaturemeasuredusingnoninvasivemagneticresonancespectroscopy AT takahiroonishi iceslurryingestionreduceshumanbraintemperaturemeasuredusingnoninvasivemagneticresonancespectroscopy AT takumaarimitsu iceslurryingestionreduceshumanbraintemperaturemeasuredusingnoninvasivemagneticresonancespectroscopy AT hideyukitakahashi iceslurryingestionreduceshumanbraintemperaturemeasuredusingnoninvasivemagneticresonancespectroscopy AT hiroshihasegawa iceslurryingestionreduceshumanbraintemperaturemeasuredusingnoninvasivemagneticresonancespectroscopy
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Ice slurry ingestion reduces human brain temperature measured using non-invasive magnetic resonance spectroscopy

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