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Fitness tips

fitness strength athletes, like football players. Endurance athletes’ hearts show expanded left and right ventricles, whereas strength athletes show thickening of their heart wall, particularly the left ventricle.

How does lung health change with exercise?

While the heart steadily strengthens over time, the respiratory system does not adjust to the same degree. Lung function does not drastically change, but oxygen that is taken in by the lungs is used more effectively.

In general, exercise encourages the body to become more efficient at taking on, distributing, and using oxygen. This improvement, over time, increases endurance and overall health.

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Strength

The U.S. Department of Health and Human Services defines muscular strength as “the ability of muscle to exert force during an activity.”

There are a number of ways to measure muscular strength. Generally, lifting or pushing something of a set weight in a prescribed position and comparing the results against any given population is the best way.

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In general, if a muscle is worked consistently and regularly, it will increase in strength. There are various ways of putting your muscles through rigorous activity, but anything that works a muscle until it is tired will increase muscle strength over time.

The exact mechanism of muscle building is not fully understood, but the general principles are well known. Training causes the muscle cells to expand and there is an increase in actin and myosin production fitness .

conclusion:

Also, in untrained muscles, fibers tend to fire in an asynchronous manner – in other words, they do not fire in unison. As they become trained, they learn to fire together as one, increasing maximum power output.

fitness Normally, the body prevents the muscles from over-exerting themselves and becoming injured. As the muscle is trained, the body starts to disinhibit the muscles’ activation – more power is allowed to be exerted.


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