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III.1.5. Health benefits of aerobics

Aerobics exercises, done for the right period of time, with the right intensity and frequently enough, have several positive physiological effects and cause changes (adaptations) in the body, especially within the cardiovascular and the respiratory system, the metabolism and the endocrinal system. Doing aerobics brings the following results:

  • The muscles of the heart get stronger, its contracting efficiency improves and the left ventricle admits more blood. This way, pulse volume (the amount of blood pumped at once) and minute volume (the amount of blood conveyed in a minute) are increased, as well. The heart functions more effectively, as it takes less pumping to provide the body with blood.
  • Heart’s rest rate, indicating the individual’s fitness, decreases. The fitter a person, the lower their rest rate is.
  • More capillaries dilate in the active muscles and improve ventilation. 
  • Circulation adapts more easily to strain, and the body gets more sensitive to endocrinal changes.
  • The heart rate recovery takes less time. After cool-down, the heart rate drops to normal level faster.
  • Respiration gets more effective. Deeper breaths result in smaller ineffective phases, the surface area in the lungs increases, and the muscles responsible for respiration get stronger. 
  • Respiratory rate at rest decreases.
  • Metabolism in the muscles gets better through faster activation of the enzyme system.
  • The body’s fat burning ability improves, and the muscle to fat tissue ratio increases. This results in an ideal body composition. In case of children and young people, it can help prevent obesity.

More details: http://sportorvos.hu/sportolok/20140131/szivmukodes_sportelettani_jellemzoi

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