Final answer:
A nutritional ergogenic aid example includes amino acid supplements, which are thought to increase muscle protein synthesis, but research lacks evidence of significant benefits over a balanced diet.
Step-by-step explanation:
An example of a nutritional ergogenic aid is the consumption of amino acid supplements by athletes. Amino acids are the building blocks of protein and are crucial for muscle repair and growth. The use of these supplements is based on the idea that an increased intake can lead to greater muscle protein synthesis.
Another ergogenic aid used by endurance athletes is erythropoietin (EPO), which is taken to stimulate the production of red blood cells, thereby increasing the oxygen-carrying capacity of the blood and enhancing aerobic performance. However, it is important to note that the use of EPO without medical indications is banned in sports.
Due to significant health risks and unfair advantages it provides. Lastly, athletes may turn to dietary supplements, like vitamins, minerals, and herbs, under the belief that these can help them reach peak physical health and performance.