Dietary supplement with a combination of Rhodiola crenulata and Ginkgo biloba enhances the endurance performance in healthy volunteers / 中国结合医学杂志
Chinese journal of integrative medicine
;
(12): 177-183, 2009.
Article
in English
| WPRIM
| ID: wpr-236205
ABSTRACT
<p><b>OBJECTIVE</b>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.</p><p><b>METHODS</b>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.</p><p><b>RESULTS</b>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).</p><p><b>CONCLUSION</b>The combined herbal supplement of Rhodiola and Gingko could improve the endurance performance by increasing oxygen consumption and protecting against fatigue.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Oxygen Consumption
/
Physical Endurance
/
Placebos
/
Testosterone
/
Blood
/
Hydrocortisone
/
Drugs, Chinese Herbal
/
Ginkgo biloba
/
Rhodiola
/
Drug Therapy
Type of study:
Controlled clinical trial
Limits:
Adolescent
/
Humans
/
Male
Language:
English
Journal:
Chinese journal of integrative medicine
Year:
2009
Type:
Article
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