Respuesta :
Long-term aerobic training causes the body to adapt and improve its ability to satisfy metabolic demands. It increases the cardiac output, stroke volume, blood volume, residual volume and vital capacity whereas it decreases the heart rate.
Increased maximum cardiac output (Qmax), increased stroke volume (SV), and decreased heart rate (HR) at rest and during submaximal exercise are some of the alterations to the cardiovascular system due to aerobic training. Additionally, the capillary density in muscle fibres has increases to help with oxygen supply and carbon dioxide elimination.
Aerobic training results in extremely considerable increase in stroke volume which further results in an increase in maximal cardiac output. The thickening of the left ventricle, which is where blood is held before being pumped into the arteries to provide oxygen and other nutrients, as well as changes in the heart's contractility, elasticity, and chamber volume, all contribute to the rise in stroke volume. Therefore, both at rest and during activity, the heart may physically pump more blood before each beat.
The reduction in resting heart rate is made possible by the rise in stroke volume. In order to maintain the same resting cardiac output requirements, the heart doesn't need to beat as frequently if it pumps more blood each beat.
Aerobic training lowers the risk of several diseases like obesity, high blood pressure, type 2 diabetes, heart disease, metabolic syndrome, stroke, and various forms of cancer. Aerobic training that includes weight-bearing, like walking, help reduce the incidence of osteoporosis.
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