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Randomized Controlled Trial
. 2009 Jun;15(3):177-83.
doi: 10.1007/s11655-009-0177-x. Epub 2009 Jul 2.

Dietary Supplement With a Combination of Rhodiola Crenulata and Ginkgo Biloba Enhances the Endurance Performance in Healthy Volunteers

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Randomized Controlled Trial

Dietary Supplement With a Combination of Rhodiola Crenulata and Ginkgo Biloba Enhances the Endurance Performance in Healthy Volunteers

Zhang-jin Zhang et al. Chin J Integr Med. .

Abstract

Objective: To determine whether the ingestion of a herbal supplement called Rhodiola-Gingko Capsule (RGC) would enhance the endurance performance of healthy volunteers and change relevant hormones in a favorable manner.

Methods: Seventy healthy male volunteers (age ranges from 18 to 22 years old) were randomly assigned to RGC group (35 cases, each capsule containing 270 mg herbal extracts, 4 capsules per day) or placebo group (35 cases, equivalent placebo preparation) for 7 weeks using computer produced digital random method. The endurance performance, serum testosterone and cortisol levels were measured at the baseline and the endpoint.

Results: Sixty-seven subjects (34 in the RGC group and 33 in the placebo group) completed a 7-week treatment. The RGC group displayed a significantly greater baseline-to endpoint increase in maximal oxygen uptake (VO(2max)) than placebo group in both absolute (P=0.020) and relative values (P=0.023). At the endpoint, the serum cortisol level was unchanged in the RGC group compared with the baseline, but it was significantly elevated in the placebo group (P<0.05). The endpoint ratio of testosterone to cortisol, a surrogate for overtraining and fatigue in endurance exercises, was also indifferent compared with the baseline in the RGC group, but significantly decreased in the placebo group (P<0.05).

Conclusion: The combined herbal supplement of Rhodiola and Gingko could improve the endurance performance by increasing oxygen consumption and protecting against fatigue.

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References

    1. Biofactors. 2004;20(3):147-59 - PubMed
    1. Altern Med Rev. 2001 Jun;6(3):293-302 - PubMed
    1. J Food Sci. 2008 Jan;73(1):R14-9 - PubMed
    1. Phytomedicine. 2003 Mar;10(2-3):95-105 - PubMed
    1. Sports Med. 1987 Nov-Dec;4(6):381-94 - PubMed

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