Causes of hematuria after strenuous exercise

Hematuria may be caused by kidney disease or acute kidney damage. If hematuria occurs after strenuous exercise, it may be because of excessive sweating, which causes fluid to flow to the muscles and reduces the blood flow to the kidneys, resulting in hematuria.

1. During high-intensity exercise, the body sweats a lot , and a large amount of blood flows to the muscles, which reduces renal blood flow and causes ischemia and hypoxia of renal blood vessels, leading to acute kidney damage. When blood flows through the glomeruli, due to the increased permeability of the glomerular filtration membrane, red blood cells can slip out of the glomerular filtration membrane and be excreted through the urinary system, forming hematuria. As long as you get enough rest, renal blood flow increases, and the permeability of the glomerular filtration membrane returns to normal, the red blood cells in the blood will not be able to slip out, and the hematuria will disappear.

2. Due to the long-term pushing off the ground and the great force of jumping, the kidneys move excessively up and down. At the same time, the waist flexes and stretches violently, which squeezes the kidneys and pulls or twists the renal blood vessels, causing kidney damage and leading to hematuria.

3. Why do some people have hematuria and others do not? This may be related to the differences in the renal ischemia caused by each person's kidneys during physical exercise. Some people do not experience renal ischemia even if they exercise a lot, while others may develop renal ischemia. It may also be related to the way your body moves.

4. When making a diagnosis , doctors will often rule out urinary diseases such as urinary stones and urinary tract tumors through ultrasound, urine analysis and other tests. After the diagnosis is confirmed, you should get enough rest, drink enough water, reduce the amount of exercise, and change the exercise method that puts pressure on the kidneys.