Special role of blood circulation in heart circulatory system of a sport person during exercise and training-A study

Abstract

Physical activities are one of the most important aspects of sports person’s life. For these activities oxygen is required which is made available to the body through blood. Blood acts as a main carrier of carbondioxide and oxygen in the body. Normally 5 to 6 litre of blood minute leaves the heart and enters the blood vessels. This is called cardiac output . At the time of exercise and training blood circulation becomes 30 to 40 litre per minute, stroke volume 70 to 200 ml and heart rate 150 to 180 minute. At the time of “Assian” the input of blood into the heart increased in bent position of the body as compared of vertical position, as a result cardiac output increases. The person whose heart rate and pulse rate comeback rapidly to normal after exercise in considered a person having healthy heart with perfect blood circulation. Such persons are best suited for exercise and training . At the beginning of exercise the blood pressure of sports person increase and later on decreases. There is no effect on diastolic pressure. Cardiac cycle is completed mainly in three stages and each cycle starts after every 8 seconds. During exercise the heart sound has regular pace. Long duration of exercise increases weight on heart which affects blood circulation. Normally the heart of sports person increases in view of the increase in volume of heart chambers and blood flow in and out of these chambers.