What supplements do Olympic weightlifters use?

Elite athletes use much more energy that the rest of us, but nutritionists and sports medicine professionals rarely recommend dietary supplements over a balanced diet unless an athlete has a deficiency. Still, many athletes and Olympians may choose to supplement their diet to help the body perform, recover and repair itself at peak performance.

Amino acids are what the body uses to build protein, and they also play a role in your body's metabolism and its ability to repair body tissues. There are three amino acids that the body can't produce itself, which have to come from food and supplements: These are called branched-chain amino acids (BCAA). One of the three, leucine, is believed to be responsible for synthesizing protein in the body -- essential for building muscle tissue -- hence why some elite athletes choose to take BCAA supplements.

Additionally, the amino acid L-Glutamine is popular among weightlifters and body builders, because it prevents muscle loss, promotes muscle growth and helps boost the muscle energy supply.

Your body also uses amino acids to produce a chemical called creatine, which it stores in its muscles. Creatine entered the public consciousness when athletes in the former USSR began to use it as a performance enhancer -- since 1992, it's been a go-to supplement for many athletes, because it may help improve overall performance as well as build strength and lean muscle mass during brief, intense training -- including weightlifting. Findings from a study that followed weightlifting performance while participants were using creatine supplements showed that weightlifters taking it had an average of 8 percent greater muscle strength and a 14 percent increase in lifting performance over those using a placebo [source: Rawson].

In addition to amino acid supplementation, weightlifters may find they benefit from glucosamine supplements. Glucosamine is an amino-monosaccharide, a compound of protein and carbohydrate that naturally occurs in your body and may help the body recover from injury by repairing and strengthening cartilage and reducing joint pain as well as joint swelling and stiffness.

There are also three essential minerals that keep Olympian bodies (and those of mere mortals) in tip-top shape.

Vitamins and minerals also help the body manage your energy levels, how well your immune system works and how efficiently your muscles contract. Olympic-level athletes, such as elite weightlifters, use more energy and place their bodies under more stress when they train than many of the rest of us, and there are three essential minerals that can help them manage that: calcium, iron and zinc. Let's look at calcium's benefits first.

Your body needs calcium to grow strong bones and to maintain that strength and health. It also plays an important role in heart health and blood clotting, as well as how well your nerves communicate. Calcium boosts bone density (which reduces the risk of bone fractures).

Iron is an essential mineral and one of the most common nutritional deficiencies among athletes [source: U.S. Olympic Committee]. Iron (and the B-vitamins B12 and folate) is essential for making healthy red blood cells. It also plays an important role in how your body gets oxygen from your lungs to all its cells and in energy production.

Of those three essential minerals mentioned above, that leaves us with zinc. Zinc deficiency may lead to a weakened immune system, but what's special about zinc and elite athletes is that if their bodies don't have enough of the mineral, they can't maintain adequate levels of testosterone in the blood. Without the right level of testosterone, the body can't maintain adequate muscle mass and muscle strength.