Abstract

The effects of a natural product containing ginseng and fenu-greek was investigated in 12 young males not specifically trained by a study in cross-over and double blind. We have valued hematological status, body composition, maximal isometric voluntary contraction (MVC) and strength-velocity curve of arms flexor muscles. Moreover a fatigue test is made by consecutive arm flexions with 40 of MVC, one every 4 seconds, as long as possible. After intake of 0.5 g of ginseng and 0.5 g of fenu-greek oral administered twice a day for 15 days, we have observed a significant increase in sideraemia without other hematological variations. We have no proof of strength variations but total work output in fatigue test was significantly higher. At exercise end, blood lactate was not different from placebo. Site and mechanism of action are not known but the present study suggests a positive action of the used natural product on muscular fatigue without blood lactate increase and possible correlated local toxicity. The product seems to help the body to better endure stress and intense work by improving energetic metabolism. Verf.-Referat