Tongkat Ali as a Potential Herbal Supplement for Physically Active Male and Female Seniors—A Pilot Study

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dc.contributor.authorHenkel, Ralf
dc.contributor.authorWang, Ruxiang
dc.contributor.authorBassett, Susan
dc.contributor.authorChen, Tao
dc.contributor.authorLiu, Na
dc.contributor.authorZhu, Ying
dc.contributor.authorTambi, Mohd
dc.date.accessioned2021-01-25T16:33:56Z
dc.date.available2021-01-25T16:33:56Z
dc.date.issued2013
dc.description.abstractTongkat Ali (Eurycoma longifolia; TA) is known to increase testosterone levels and alleviate aging males’ symptoms. This study aimed at investigating TA as an ergogenic supplement for elderly people. Thirteen physically active male and 12 physically active female seniors (57–72 years) were supplemented with 400-mg TA extract daily for 5 weeks. Standard hematological parameters were taken. In addition, the concentrations of total and free testosterone, dihydroepiandrosterone, cortisol, insulin-like growth factor-1, and sex hormone-binding globulin were analyzed. As additional biochemical parameters, blood urea nitrogen and creatine kinase as parameters of kidney function and muscle damage, respectively, as well as the muscle strength by a simple handgrip test were determined. After treatment, hemoglobin, testosterone, and dihydroepiandrosterone concentrations, and the ratio of total testosterone/cortisol and muscle force remained significantly lower in female seniors than in male seniors. Hematocrit and erythrocyte count in male seniors increased slightly but were significantly higher than in female seniors. Treatment resulted in significant increases in total and free testosterone concentrations and muscular force in men and women. The increase in free testosterone in women is thought to be due to the significant decline in sex hormone-binding globulin concentrations. The study affirms the ergogenic benefit of TA through enhanced muscle strengthen_US
dc.identifier.citationHenkel ,R et al.,Tongkat Ali as a Potential Herbal Supplement for Physically Active Male and Female Seniors—A Pilot Study. Phytotherapy Researchen_US
dc.identifier.urihttp://hdl.handle.net/10566/5762
dc.language.isoenen_US
dc.publisherJohn Wiley & Sons Ltden_US
dc.subjectEurycoma longifoliaen_US
dc.subjectadaptogenen_US
dc.subjecttestosteroneen_US
dc.subjectergogenic benefitsen_US
dc.subjectincreased muscle strengthen_US
dc.subjectelderly individualsen_US
dc.titleTongkat Ali as a Potential Herbal Supplement for Physically Active Male and Female Seniors—A Pilot Studyen_US
dc.typeArticleen_US

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DOI: 10.1002/ptr.5017
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