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Life Sciences/Medicine

Modern imaging systems help scientists unveil the last secrets of the human body. Their understanding of cellular and molecular processes provides doctors and medical engineers with valuable insights for the development of new diagnostic and therapeutic procedures – many of them using the advantages of laser technology.

Spiroergometry Makes Endurance Measurable

http://www.sport.med.tum.de/en

Spectroscopic breath gas analysis reveals endurance performance and is used in sports medicine to determine training intensity.

As the intensity of exertion increases, the demand for energy by the muscle cells likewise increases and must be covered by an increased oxygen uptake. The more oxygen the working muscles can absorb, the higher the maximum endurance capacity. The decisive factors in this process include the exchange of gases between the lungs and blood, the oxygen transport capacity of the blood, the distribution of the blood in the body, and the oxygen absorption capacity of the muscle cells. These factors can be improved by endurance training. Therefore, endurance-trained athletes feature a particularly high maximum oxygen intake.

The main difference between inhaled and exhaled air is the oxygen and carbon dioxide content. The measurement of O2 uptake and CO2 release during physical exertion enables a differentiated analysis of the function and performance of the lungs, cardiovascular system, and the exchange of gases in the body. This is the reason why so-called spiroergometry is an important method for performance diagnosis in patients and athletes.

In this diagnostic procedure, a breath gas analysis is performed during increasing physical exertion. Exertion is continuously increased over a period of approx. 8-12 minutes until physical exhaustion occurs. The test person wears a breathing mask which continuously measures the oxygen and carbon dioxide concentration in the inhaled and exhaled air. At the same time, the respiratory rate, respiratory volume, respiratory minute volume, and heart rate are analyzed.

Based on the measurement results, the maximum oxygen uptake and other so-called ventilatory thresholds can be determined, from which experts can draw conclusions about the training intensity.

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+46 31 703 71 73

info@lasercomponents.se