Use of Supplements for Strength Training

Dietary supplements for athletes are presented with a strong emphasis on evidence, limited benefits, and potential risks. The main idea is that supplements should never come before a solid overall diet, since protein, carbohydrate, fat intake, and general nutrition have a much greater impact on performance than any ergogenic aid. The overview begins with how common supplement use is among athletes, with research suggesting 40 to 70% use them. It then highlights major safety concerns: many products may contain prohibited substances, and many do not match what is listed on the label. Studies cited show that around 10 to 15% of supplements may contain banned ingredients, sometimes in very small amounts that are still enough to cause a failed doping test without offering any real performance benefit. Practical guidance focuses on reducing this risk through careful product research and third-party testing, especially using services such as Informed-Sport. The lecture also outlines the supplements examined later in detail: caffeine, creatine, beta-alanine, sodium bicarbonate, and dietary nitrate.