Drugs

EPO

Increases O2 to muscles and reduces fatigue

Beta Blockers

BUT thicker blood and cardiac arrest

Used by cyclists, marathon runners, aerobic athletes

Steroids

Promotes protein production and muscle growth

BUT causes cardiac arrest

Used by high power athletes, boxers, shotput

Relaxer, lowers heart rate

BUT low heart rate, reduces effect of adrenaline, death

Used by precision athletes, archery, darts

Caffeine

Increases mental awareness, delays fatigue, quicker reaction times

BUT addictive, insomnia, stomach problems, diuretic, increases blood pressure

Used by sprinters (quicker at start line)

Creatine

Lengthens ATP-PC System, aids recovery, longer performance

BUT dehydration, muscle cramps, stress on organs

Used by marathon runners (delays Lactic Acid System)

Protein Supplement

Increases amino acids, muscle mass and power

BUT stress on liver and kidneys (organs that process proteins)

Used by strength athletes, weight lifters, rugby, field events