THE INTERVAL TRAINING REDUCES THE RISK OF CORONARY HEART DISEASE Bayu Suko Wahono(a*), Fuad Noor Heza(a), Ngadiman(a), Rifqi Festiawan(a), Ajeng Dian Purnamasari (a), Indra Jati Kusuma (a).
a) Physical Education, Faculty of Health Science, Jenderal Soedirman University.
bayu.wahono[at]unsoed.ac.id
Abstract
Aerobic exercise has been widely used for decades to increase functional capacity and cardiovascular risk factors in healthy adults and people with cardiovascular disease. Coronary heart disease is a health problem whose prevalence is quite common in health problems in Indonesia. There are several risk factors that can cause heart problems. One way to improve cardiorespiratory fitness is to do physical activity or exercise regularly and correctly. One method of physical activity that can improve cardiorespiratory fitness is interval training. Interval training is a system of exercises interspersed with intervals in the form of periods of rest. Interval training creates a high level of efficiency in the circulatory system and respiration in carrying oxygen to the working muscles and heart. This exercise requires oxygen for energy formation which is done continuously, rhythmically at the intensity of exercise 50-60% of the Maximal Heart Rate (MHR) and 50-85% of the maximum use of oxygen for 20-50 minutes with a frequency of exercise three times a week. The increased ability of the heart muscle to contract is associated with ATPase activity in the heart muscle and the increased extracellular calcium available which causes an increase in cardiac output (stroke volume). This exercise is believed to reduce the risk of coronary heart disease.
