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Effect of Eurycoma Longifolia Standardised Water Extract on Anabolic Balance during Endurance Exercise

Shawn M. Talbott*, Annie George

Eurycoma Longifolia (EL) is a medicinal plant popular for its energy giving properties; it has been called the “Malaysian ginseng” and proposed as a natural testosterone replacement therapy due to its’ ability to normalise healthy testosterone levels in hypogonadic subjects. Clinical studies of EL supplementation have been shown to improve libido, energy, sports performance and weight loss, stimulate release of free testosterone, reduce fatigue and improve quality of life. This study assessed the effect of a standardised water extract from the root of Eurycoma Longifolia (EL) in balancing the testosterone and cortisol hormones in endurance sports. The standardized hot-water extract of TA root (Physta®) was able to increase testosterone and decrease cortisol compared with placebo (p<0.05). These results indicate that daily supplementation with EL standardised root water extract potentially improves adrenal fatigue by improving testosterone/cortisol balance creating an anabolic rather than a catabolic state of the body. EL thereby improves health by protecting the body from the detrimental effects of modern-day chronic stress, which may include general day-to-day stress, stress from dieting, sleep deprivation, poor mental health and exercise training. EL may improve overall fitness and health.