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        Heart rate is the number of contractions the heart makes in a minute and is expressed in "beats per minute" or "beats per minute." Today we have numerous devices to measure heart rate while exercising. Heart rate monitors are different electronic devices that measure heart rate in real time. To do this, they detect the pulsations and therefore the heartbeat, using sensors on a chest strap or on the wrist.
What is the normal resting heart rate? The heart rate that a normal heart needs to function at rest can vary between 60 and 100 beats per minute. Above 100 we speak of tachycardia and below 60 of bradycardia. Certain athletes, such as cyclists, long-distance runners or swimmers, can have a resting rate of even only 40 beats per minute. It seems that Miguel Indurain had a heart rate of 28 beats per minute at rest, and his heart was capable of moving more than 30 liters of blood in one minute, when the normal rate is not to exceed 4. The heart rate decreases with cardiovascular training and also over the years. It also depends on many other factors such as gender (heart rate is somewhat higher in women), genetic factors, body complexion ... etc.
How many beats per minute can my heart reach in a very demanding effort? This number is determined by what is known as your “maximum heart rate” and can be helpful in estimating intensity when doing aerobic exercise. We can estimate the theoretical maximum heart rate using the following formula: in men the age should be subtracted from 220 and in women from 226. Thus, the theoretical maximum heart rate of a 40-year-old man would be: 220 - 40 = 180 beats per minute. This is a simple estimate and is therefore subject to many limitations, but may serve as a guideline value.
        Is sport good for the heart? The moderate practice of some sport is beneficial for health in general and particularly for the heart. There are more and more studies about the damages of leading a sedentary life, which show its association with the development of chronic diseases such as overweight and obesity, glucose intolerance (risk of developing diabetes), lipid alterations (increased cholesterol and triglycerides), high blood pressure, etc. Exercising reduces the levels of "bad cholesterol" (LDL-cholesterol) and lowers blood pressure levels, which are two important cardiovascular risk factors and therefore, minimizes the chances of suffering a cardiovascular event (heart attack, stroke ...).
Play sports safely. Practicing some sport at moderate intensity is beneficial for the cardiovascular system. However, before starting any sports practice it is advisable to make a correct assessment of the person's state of health through a basic medical check-up that should include taking blood pressure, a complete blood test and an electrocardiogram. Once done and after checking that everything is fine, we can only choose the sport we want to practice and enjoy.


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