Influence of acute beetroot juice supplementation on cold-induced vasodilation and fingertip rewarming

Wakabayashi, Hitoshi; Sugiyama, Koji; Suzuki, Shinichi; Sakihama, Yasuko; Hashimoto, Makoto; Barwood, Martin J.

Influence of acute beetroot juice supplementation on cold-induced vasodilation and fingertip rewarming

Wakabayashi, Hitoshi; Sugiyama, Koji; Suzuki, Shinichi et al.

European journal of applied physiology, 2023, 123(3), 495-507

Permalink : https://hdl.handle.net/2115/90609

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アクセス権	open access
URI	https://hdl.handle.net/2115/90609
タイトル	Influence of acute beetroot juice supplementation on cold-induced vasodilation and fingertip rewarming
著者	Wakabayashi, Hitoshi ; Sugiyama, Koji ; Suzuki, Shinichi ; Sakihama, Yasuko ; Hashimoto, Makoto ; Barwood, Martin J.
著者名 Wakabayashi, Hitoshi
著者名 Sugiyama, Koji
著者名 Suzuki, Shinichi
e-Rad_Researcher 10344491 著者名 Sakihama, Yasuko
e-Rad_Researcher 90292094 著者名 Hashimoto, Makoto
著者名 Barwood, Martin J.
言語	英語
キーワード	Nitrate
	Nitric oxide
	Rewarming speed
	Skin blood flow
	Red beet
発行日	2023-03
出版者	Springer
収録物名	European journal of applied physiology
巻(号)	123(3)
ページ	495-507
抄録	Purpose: Vasoactive ingredients in beetroot (BR) such as nitrate are known to induce vasodilation in temperate conditions. This study investigated the effect of BR ingestion on cold induced vasodilation (CIVD) and rewarming of finger skin temperature (T-fing) during and after hand immersion in cold water. Methods: Twenty healthy males (mean +/- SD; age 22.2 +/- 0.7 years, height 172.6 +/- 6.0 cm, body mass 61.3 +/- 11.7 kg) repeated a hand cold water immersion test twice with prior BR or water beverage ingestion (randomised order). They rested for 2 h in thermoneutral conditions (27 degrees C, 40% relative humidity) after consuming the beverage, then immersed their non-dominant hand in 8 degrees C water for 30 min. They then rewarmed their hand in the ambient air for 20 min. Skin temperature at seven body sites, T-fing, finger skin blood flow (SkBF(fing)), and blood pressure were measured. Results: During hand immersion parameters of CIVD (T-fing and SkBF(fing)) were not different between BR and water conditions although skin temperature gradient from proximal to distal body sites was significantly smaller with BR (P < 0.05). During rewarming, SkBF(fing) and cutaneous vascular conductance were significantly higher with BR than with water (P < 0.05). The rewarming speed in T-fing and SkBF(fing) was significantly faster with BR at 15- (BR 1.24 +/- 0.22 vs water 1.11 +/- 0.26 degrees C/min) and 20-min rewarming (P < 0.05). Additionally, individuals with slower rewarming speed with water demonstrated accelerated rewarming with BR supplementation. Conclusion: BR accelerated rewarming in T-fing and SkBF(fing) after local cold stimulus, whereas, CIVD response during hand cold immersion was not affected by BR ingestion.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s00421-022-05071-6
PISSN	1439-6319
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1007/s00421-022-05071-6