Related Experiment Video
Updated: Jan 10, 2026

Author Spotlight: Assessing the Reliability of Doppler Ultrasound in Measuring Leg Blood Flow
Published on: December 15, 2023
In brief: Blood doping-the process of withdrawing an athlete's blood, holding it 9 to 12 weeks until hemoglobin levels return to normal, and reintroducing it into the body immediately before an important contest-is a controversial Procedure, and its ethicality and legality are debated throughout the sports world. This review of the literature concludes that although five early studies did not provide sufficient objective evidence to support its use, the majority of 13 new studies support the physiological rationale and efficacy of the use of blood doping to increase endurance capacity.
In brief: Blood doping-the process of withdrawing an athlete's blood, holding it 9 to 12 weeks until hemoglobin levels return to normal, and reintroducing it into the body immediately before an important contest-is a controversial Procedure, and its ethicality and legality are debated throughout the sports world. This review of the literature concludes that although five early studies did not provide sufficient objective evidence to support its use, the majority of 13 new studies support the physiological rationale and efficacy of the use of blood doping to increase endurance capacity.
Related Concept Videos
Blood Transfusion
Blood Transfusion Overview
A blood transfusion is a medical procedure used to replace blood lost due to injury, surgery, or to treat conditions such as anemia or cancer. During a transfusion, donor blood is...
Blood Transfusion and Agglutination
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
Hemoglobin
When all four heme groups are bound to oxygen, the resulting molecule is called oxyhemoglobin. As a result, arterial blood...
Blood Studies I: ABG and VBG
Arterial Blood Gas (ABG)
Arterial Blood Gas (ABG) studies are crucial for assessing the lungs' ability to supply oxygen and remove carbon dioxide, reflecting the patient's ventilation status. They also help understand the kidneys' capacity to...
Factors Affecting Erythropoiesis
Several factors influence the erythrocyte production rate, with tissue oxygen level being among the most critical. Intense exercise or high altitudes can cause tissue hypoxia, which triggers the kidneys to release more erythropoietin (EPO) into the bloodstream.
EPO then...
Bone Marrow Sampling and Transplants
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy...

