Effects of a Standardized Oligomerized-Polyphenol from Litchi chinensis Fruit Extract and Mixed Plant Extract Supplementation on Peripheral Circulation and Cold Sensitivity
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- WAKI Hideaki
- Faculty of Health Care, Teikyo Heisei University Research Institute of Oriental Medicine, Teikyo Heisei University
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- SUZUKI Takuya
- Graduate School of Health Science, Teikyo Heisei University
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- UEBABA Kazuo
- Faculty of Health Care, Teikyo Heisei University Research Institute of Oriental Medicine, Teikyo Heisei University
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- HISAJIMA Tatsuya
- Faculty of Health Care, Teikyo Heisei University Research Institute of Oriental Medicine, Teikyo Heisei University
書誌事項
- タイトル別名
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- Effects of a Standardized Oligomerized-Polyphenol from <i>Litchi chinensis</i> Fruit Extract and Mixed Plant Extract Supplementation on Peripheral Circulation and Cold Sensitivity
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<p>Certain individuals tend to suffer from a cold sensation—particularly in the lower extremities—despite most people not suffering from the same sensation. In Japan, this phenomenon is called “hie-sho” and reduces quality of life for several people, particularly women. A previous study has shown that a standardized oligomerized-polyphenol from Litchi chinensis fruit extract (OPLFE) reportedly causes a significant increase in body surface temperature. The present study aimed to investigate whether supplementation with OPLFE affected peripheral circulation and cold sensitivity. This randomized, double-blind, placebo-controlled trial was performed including 25 participants (age, 45.0±10.4 y; 3 males and 22 females) who were assigned to consume OPLFE, mixed plant extract with OPLFE, or placebo capsules for 14 d. Participants were instructed to relax for 60 min in a temperature-controlled room prior to obtaining measurements. Changes in skin temperature and peripheral blood flow of the middle finger were assessed immediately before and 1, 5, 10, 20, and 30 min after immersion in cold water (10ºC). Participants’ height, weight, skin temperature, and blood flow in peripheral tissue were measured; furthermore, their “hie-sho” was measured using the Visual Analog Scale (VAS). Skin temperature and blood flow in peripheral tissue increased in the OPLFE and mixed plant extract with OPLFE groups on day 14 compared with those on day 1. In addition, cold sensitivity in these two groups significantly improved between day 1 and day 14. These findings suggest that OPLFE improves “hie-sho” by increasing peripheral blood flow and skin temperature.</p>
収録刊行物
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- Journal of Nutritional Science and Vitaminology
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Journal of Nutritional Science and Vitaminology 66 (3), 255-260, 2020-06-30
一般財団法人 学会誌刊行センター
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詳細情報 詳細情報について
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- CRID
- 1390566775147384192
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- NII論文ID
- 130007866419
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- NII書誌ID
- AA00703822
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- ISSN
- 18817742
- 03014800
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- NDL書誌ID
- 030462108
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- PubMed
- 32612088
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可