It's very hot in summer. For those who often swim, do they sometimes have a sudden cramp in their feet or legs? It's very dangerous at this time. Don't worry and panic too much. What should we do when swimming?
Does swimming cramp swollen do?
"Leg cramps" -- what doctors call foot muscle spasm is mainly due to the constant contraction of foot muscles when pedaling, resulting in waste products such as carbon dioxide and lactic acid. Under normal circumstances, carbon dioxide is transported out of the body by blood vessels. When the muscles contract for a long time (foot pedaling action), the blood vessels contract constantly, and wastes cannot be transported away in time, so that they stay in the blood vessels for a long time, so that the muscles can not be relaxed, which is very easy to cause foot pain and 'leg cramps'.
When leg cramps occur in swimming, keep calm, panic will choke water, make cramps worse. First, take a deep breath, dive your head into the water, make your back float to the water surface, hold your toes with both hands, pull hard to your own direction, and stretch your legs hard at the same time. If it doesn't work once, it can be repeated several times, and the muscle will slowly relax and return to its original state. After landing, dry the body in time, keep warm, and massage the parts that still feel pain properly to further alleviate it.
Eight taboos in swimming
1、 When sweating, blood vessels expand when swimming and sweating, and contract suddenly when encountering cold water stimulation, which is easy to cause diseases.
2、 After strenuous exercise, swimming strenuous exercise makes the body tired, muscle contraction and reaction ability weakened, swimming will increase the burden of heart and lung, and prone to accidents such as draught, cramp and drowning.
3、 After swimming, clean water should be used to flush the body, water in the ears should be dug out, and eye drops should be used for disinfection.
4、 Swimming in strange waters: when swimming in rivers and other natural waters, you should know the depth of water, the natural conditions at the bottom of the water, and the conditions of animals and plants in advance. Do not go into the water rashly to avoid accidents.
5、 Before meals and after meals, when swimming on an empty stomach, the blood sugar in the body is low. Swimming can cause dizziness, weakness of limbs, and even accidents. After meals, the activity of digestive organs increases, and when swimming, a large amount of blood flows to limbs, reducing the blood volume of digestive tract, and affecting the digestion and absorption of food.
6、 In summer, the water temperature is much lower than the temperature, so swimmers should be prepared before entering the water. If the physiological preparation is insufficient and the water environment cannot be adapted for a while, it is easy to cause dizziness, nausea and other uncomfortable symptoms, and the severe one will cramp or strain muscles.
7、 If the swimming time is too long, 30-60 minutes is the best time to stay in the water.
8、 When the body is not swimming in time, it is not suitable for those who suffer from cardiovascular and cerebrovascular diseases, infectious diseases, traumatic inflammation and menstrual period of women.