Heart rate is defined as the number of heart contractions or beats per unit of time. This parameter is measured under well-determined physiological conditions and is expressed in beats per minute (beats / min).
The speed of the heartbeat depends on many factors, such as physical activity, threats to safety, and individual emotional responses. As you can imagine, the heart rate is very different at the time of a traffic accident or in bed resting. If you want to know everything about this vital parameter, keep reading.
What is heart rate?
As indicated by the Spanish Heart Foundation, the heart rate represents the number of times the heart contracts per minute. This tireless organ pumps 70 milliliters of blood with each heartbeat, or what is the same, about 5 liters in 60 seconds. To do this, your muscles must contract and relax rhythmically.
On a physical level, it is a cyclical event, since it is repeated in a specific unit of time with total periodicity. Although a normal heart rate does not ensure that the individual is disease free, it is a useful parameter for identifying a wide variety of disorders.
According to the World Health Organization (WHO), ischemic heart disease is the leading cause of death in the world in high-income countries, well above cancers and other types of pathologies. It accounts for 47% of all deaths and in Europe it causes 4 million deaths annually. Without a doubt, paying attention to the heart can save lives.