|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >
Influence of acute beetroot juice supplementation on cold-induced vasodilation and fingertip rewarming
| Title: | Influence of acute beetroot juice supplementation on cold-induced vasodilation and fingertip rewarming |
| Authors: | Wakabayashi, Hitoshi Browse this author | | Sugiyama, Koji Browse this author | | Suzuki, Shinichi Browse this author | | Sakihama, Yasuko Browse this author →KAKEN DB | | Hashimoto, Makoto Browse this author →KAKEN DB | | Barwood, Martin J. Browse this author |
| Keywords: | Nitrate | | Nitric oxide | | Rewarming speed | | Skin blood flow | | Red beet |
| Issue Date: | Mar-2023 |
| Publisher: | Springer |
| Journal Title: | European journal of applied physiology |
| Volume: | 123 |
| Issue: | 3 |
| Start Page: | 495 |
| End Page: | 507 |
| Publisher DOI: | 10.1007/s00421-022-05071-6 |
| Abstract: | 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. |
| Rights: | 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 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/90609 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 若林 斉
|
