Diuretics in sports is use for:

Question

Accepted Answer

The correct option is (4):
Diuretics are a class of drugs fundamentally designed to increase the rate of urine flow, causing the body to excrete sodium and, crucially, water. In the context of sports, the deliberate misuse of these substances is for the sole purpose of rapidly and artificially achieving a lower body weight. This is primarily seen in sports that have strict weight categories, such as boxing, wrestling, or martial arts (judo, taekwondo), where an athlete must 'make weight' before a competition. By shedding significant water weight quickly, an athlete can qualify for a lighter class, hoping to gain an advantage over smaller opponents. A second, highly illicit reason for their use is as a 'masking agent' to dilute the concentration of other banned performance-enhancing drugs in the urine, thereby making them harder to detect in anti-doping tests.

The incorrect option is (1):
To increase muscle strength is not a function of diuretics. Muscle strength is built through training and depends on muscle fiber size (hypertrophy), neurological efficiency, and proper hydration. Diuretics cause dehydration and electrolyte depletion, which severely impair muscle function, leading to fatigue, reduced power output, and a high risk of muscle cramps and spasms. Therefore, their use directly counteracts the goal of increasing strength or enhancing performance.

The incorrect option is (2):
To reduce muscle tension level is not an effect of diuretic drugs. Diuretics specifically target the kidneys to alter fluid balance; they have no direct effect on the central nervous system or the neuromuscular junctions responsible for muscle relaxation or tension relief. In fact, by depleting essential electrolytes like potassium and magnesium, diuretics disrupt the normal functioning of muscle cells, thereby increasing the likelihood of painful muscle spasms and heightened tension, the opposite of the intended effect.

The incorrect option is (3):
To bring stability in blood circulation is medically achieved by diuretics when treating high blood pressure or heart failure, as they reduce overall fluid volume. However, in healthy athletes, the rapid fluid loss induced by diuretics leads to a state of dehydration, causing a sharp drop in blood volume and blood pressure. This severe cardiovascular stress forces the heart to beat faster (tachycardia) to compensate, leading to a destabilized and dangerous circulatory state, not one of stability.