期刊
JOURNAL OF ETHNOPHARMACOLOGY
卷 126, 期 3, 页码 574-576出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.jep.2009.09.012
关键词
Maca; Endurance performance; Sexual desire; Trained athletes
Aims of the study: Maca (Lepidium meyenii Walp) is consumed both as a sports supplement by strength and endurance athletes, and as a natural stimulant to enhance sexual drive. However, whether or not the postulated benefits of maca consumption are of scientific merit is not yet known. The aim of the study was therefore to investigate the effect of 14 days maca supplementation on endurance performance and sexual desire in trained male cyclists. Materials and methods: Eight participants each completed a 40 km cycling time trial before and after 14 days supplementation with both maca extract (ME) and placebo, in a randomised cross-over design. Subjects also completed a sexual desire inventory during each visit. Results: ME administration significantly improved 40 km cycling time performance compared to the baseline test (P = 0.01), but not compared to the placebo trial after supplementation (P > 0.05). ME administration significantly improved the self-rated sexual desire score compared to the baseline test (P = 0.01 and compared to the placebo trial after supplementation (P = 0.03). Conclusions: 14 days ME supplementation improved 40 km cycling time trial performance and sexual desire in trained male cyclists. These promising results encourage long-term clinical studies involving more volunteers, to further evaluate the efficacy of ME in athletes and normal individuals and also to explore its possible mechanisms of action. (C) 2009 Elsevier Ireland Ltd. All rights reserved.
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