What is Cardio-Respiratory Fitness?

Cardio Respiratory Fitness (CRF) reflects metabolism and as the name indicates lungs and heart interact by supply of oxygen to tissues and organs and by elimination of carbon dioxide. Maximal oxygen capacity of a person means the maximal oxygen consumption determined until exhaustion and is called VO2-max.

While sports-enthusiasts and athletes are often very interested in knowing their VO2-max level, CRF is also a valuable metric for assessment of overall health.

CRF is a combined measure of how well the lungs are able to transport oxygen into the blood, the hearts ability to pump the oxygenated blood around in the body, and how well the muscles can utilize the oxygen.

CRF is normally measured using a ergometer cycling or treadmill running test, pushing the test subject to exhaustion, while breathing through a mask for analysis of the in- and expiratory gas.

The VentriJect Seismofit® system eliminates this inconvenience. With our system, the subject does not need to perform any exercise. The Seismofit® sensor is adhered to the chest and a recording is performed for 45 seconds.