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After activity, the heart rates of the athletic students reverted to resting pulse in four minutes.
Physical activity is connected with haemodynamic alterations and modifies the loading circumstances of the heart. In dynamic exercise the emphasis is on movement with no or limited production of force. The key haemodynamic aspects are increases in heart rate and stroke volume, the two components of cardiac output. Although the overall effect is a mild to moderate increase in blood pressure, systemic vascular resistance declines. Volume exerts the heaviest burden on the heart. In static workout force is created with no or limited movement. The haemodynamic repercussions involve a small elevation of cardiac output, produced by the increase of heart rate, and a more dramatic rise of blood pressure, resulting in a pressure load on the heart.
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