Nutritional Ergogenic Aids provides an up-to-date review of what is hypothetical and what is known about the most extensively used nutritional ergogenic aids; dietary supplements to enhance physical and athletic performance. Among the 23 aids discussed are branched-chain amino acids, carnitine, creatine, glucosamine, chrondroitin sulfate and taurine. An up-to-date review about what is hypothetical and what is known about the most extensively used ergogenic aids.