Lutein, blackcurrant extract may reduce visual fatigue: Study

葉黃素,黑加侖抽出物有可能會降低眼部疲勞:研究

By Stephen Daniells, 10-Aug-2009

A supplement containing lutein, zeaxanthin and blackcurrant extract may reverse signs of visual fatigue, according to a new study from Japan and Singapore.

一份在日本和新加坡的研究指出,補充品含葉黃素,玉米黃素和黑加侖粹出物有可能逆轉眼部疲勞的徵兆

Visual fatigue, caused by many factors, not least staring at computer monitors for long hours, may be eased a daily supplement containing blackcurrant fruit extract (200 mg), lutein (5 mg), and zeaxanthin (1 mg), according to a randomized, double-blind, placebo-controlled cross-over trial.
眼部疲勞是由很多原因導致的,最常見的是住是電腦螢幕過長.營養補充品含黑佳麗果實粹出(200mg),葉黃素(5mg),玉米黃素(1mg)可以輕易的減輕眼部疲勞

The findings, published in the journal Applied Ergonomics, adds to the ever growing body of science supporting the eye health benefits of lutein and zeaxanthin.

Lutein, a nutrient found in various foods including green leafy vegetables and egg yolk, has a ten-year history in the dietary supplement market as a nutrient to reduce the risk of age related macular degeneration (ADM). It is often used in combination with zeaxanthin.

葉黃素是一種在很多食物裡都找得到的一種營養素,包括綠葉蔬菜和蛋黃.有10年的歷史記載著在營養品市場裡對降低因為年齡產生的黃斑點退化. 通常會跟玉米黃素一起使用

The global lutein market is set to hit $124.5 million (€93 million) in 2013, according to a 2007 report from Frost & Sullivan.

According to the report, manufacturers need to address this growing maturity in dietary supplements by identifying new and potentially lucrative application segments that offer opportunities for the continued growth of the lutein market.

Looking at visual fatigue

Researchers from Kwansei Gakuin University in Japan and Singapore's Cerebos Pacific Limited, which supplied the supplement used in the study, recruited 22 people to participate, 13 of whom actually completed the study.

The subjects were randomly assigned to receive either the lutein supplement, or placebo, for two weeks, followed by two weeks of washout, and a further two weeks with the opposite intervention.

After completing a two hour visual proof reading task, the researchers measured signs of visual fatigue, including so-called eye fixation related potentials (EFRP).

“EFRP is thought to reflect the total functioning of the visual system, consisting of the retina, the muscle of the pupil, the muscles involved in eye movements, and central nervous system functioning,” explained the researchers.

“In the present study, [a supplement containing lutein, zeaxanthin, and blackcurrant extract]may have had beneficial effects on visual functioning that served to counteract or prevent fatigue induced by the proof reading task,” they added.

“Overall, our results suggest that a combination of lutein, zeaxanthin and blackcurrant extract can aid recovery from visual fatigue,” they concluded.

最後,實驗結果建議綜合葉黃素,玉米黃素和黑佳倫粹出物可以幫助視力疲勞的恢復

Source: Applied Ergonomics
Volume 40, Issue 6, Pages 1047-1054
“The effect of lutein supplementation on visual fatigue: A psychophysiological analysis”
Authors: A. Yagi, K. Fujimoto, K. Michihiro, B. Goh, D. Tsi, H. Nagai

來源:

http://www.nutraingredients-usa.com/Product-Categories/Antioxidants-carotenoids/Lutein-blackcurrant-extract-may-reduce-visual-fatigue-Study/?utm_source=Newsletter_Product&utm_medium=email&utm_campaign=Newsletter%2BProduct