If the muscles of fitness people are more developed is only an external manifestation, then what does it mean that the heart is also enlarged?
Fitnesses need stronger cardiorespiratory capacity. After a long period of training, you know that your cardiorespiratory capacity is enhanced. The lung capacity has also become larger, and in fact your heart is quietly changing to adapt to this situation, and the heart is slowly getting bigger.
Long-term adherence to appropriate physical exercise or training can increase the weight and weight of the heart. The average heart weight is about 300g, while the heart of people who insist on exercising for a long time can reach 400 to 500g. Myocardial fibers become thicker, and the contractile protein and myoglobin contained in them increase. This kind of heart enlargement due to adaptation to exercise is called “exercise heart”.
Scientific studies have shown that moderate-intensity endurance training can cause myocardial cell hypertrophy, myocardial sinus-like duct dilation, mitochondria in myocardial cells (energy factories in cells) ) increases, which is beneficial to ensure the energy supply of the heart. That is to say, fitness people can transform their hearts through endurance training. Such as aerobic exercise three times a week, this will have a positive effect on the heart, making your heart stronger.
A fitness person is not only a muscle, but also has a “sports heart”. A strong heart is a powerful backup to meet daily challenges. Do you also want to have a “sports heart”?