Square dance belongs to aerobic exercise. Long-term adherence to square dance on the one hand can strengthen the body, reduce blood lipids, blood sugar, reduce abdominal girth, enhance cardiopulmonary function, reduce bone calcium loss; on the other hand, it can enhance the emotional exchange between people, relieve psychological pressure, and help improve sleep, improve appetite. So, suffering from hypertension, coronary heart disease, atrial fibrillation and other cardiovascular disease patients, can also join the square dance army? The answer is yes. But you need to grasp the “three times” and “two degrees” of the problem. Three times timing, time and time timing Not all patients with cardiovascular disease can square dance. For example, patients with uncontrolled hypertension, acute myocardial infarction within two days, frequent episodes of unstable angina, severe arrhythmias, acute endocarditis, decompensated heart failure, acute pulmonary embolism, deep vein thrombosis, severe aortic stenosis, acute aortic coarctation, etc. are not suitable for exercise. Patients with cardiovascular disease who are hospitalized should start exercising early if their condition is stable within 1 to 3 weeks after discharge. However, only walking is recommended within 1 month of discharge from the hospital, and after 1 month, depending on the body’s recovery, you can decide whether you can do square dancing. In addition, in the summer when the temperature is high, you should choose to dance in the cool morning or evening; those who sweat a lot should replenish water in time. The old saying “winter training three nine, summer training three volts”, but this is not a wise move for patients with cardiovascular disease. Because the cold will induce vascular spasm, cause blood pressure to rise, increase the burden on the heart, triggering ischemia and hypoxia of the heart, brain and other important organs. In the hot summer, sweating can reduce blood volume and make blood sticky, which can also easily cause thrombotic events. At the same time, exercise during hot and humid weather is very easy to heatstroke, bringing somatic discomfort and even fatal. Therefore, it is recommended that in the fall and winter seasons when the temperature is low, square dancing should be done 1 hour after eating. Avoid exercising immediately after a full meal to avoid inducing hypoglycemia on an empty stomach. Do 5-10 minutes of preparatory activities before dancing, and wear a good hat and scarf to keep warm. In the summer when the temperature is high, you should choose to dance in the cool morning or evening; if you sweat more, you should replenish water in time. Time For patients with coronary heart disease, hypertension and other cardiovascular diseases, the classic procedure of aerobic exercise includes three steps: 5-10 minutes of preparatory activities, 30-60 minutes of aerobic exercise and 5-10 minutes of relaxation and finishing exercises. The same should be done for square dancing. For patients with chronic stable heart failure, due to reduced cardiac function, it is recommended to shorten the exercise time appropriately, and the total duration should not exceed 60 minutes. The pre-warm-up time can be extended to 10 to 15 minutes. The real dancing time should not exceed 30 minutes. In the early stage of cardiovascular disease recovery, patients can dance low-intensity square dance for 5~10 minutes a day according to their own condition; later, as the body function gradually recovers, then extend the dancing time appropriately. Once symptoms such as chest tightness, chest pain, palpitations, shortness of breath and dizziness appear when dancing, you should stop immediately and sit down to rest. If the symptoms tend to worsen, you should immediately take nitroglycerin and other emergency drugs and seek medical attention as soon as possible. Don’t try to stick to it because of “face” and “defiance”. Two degrees of frequency and intensity When dancing, people’s heart rate accelerates, blood pressure rises, followed by an increase in the burden on the heart, increased myocardial oxygen consumption, may induce myocardial ischemia, promote the deterioration of cardiac function, induce malignant arrhythmia, with serious consequences. Therefore, patients with cardiovascular disease should take into account their own situation and develop a gradual and individualized program. In general, it is recommended to dance 3 to 5 times a week. The intensity is appropriate to avoid significant symptoms of dizziness, palpitations, chest pain or shortness of breath. For patients with better physical recovery, the frequency can be increased and the intensity increased as appropriate. For optimal cardiovascular health and physical benefits to patients, a medium intensity square dance is appropriate. The appropriateness of square dance intensity can be measured by how fast or slow the heart rate is. The reference formula is: upper limit of heart rate = early morning quiet heart rate x 1.8; lower limit of heart rate = early morning quiet heart rate x 1.4. There are large individual differences and variations in heart rate. Some patients with premature beats or atrial fibrillation cannot accurately self-test their pulse rate to reflect their true heart rate.