The magnitude of exercise intensity in training directly affects the training effect and the purpose of training. Therefore, using scientific indicators to objectively assess exercise intensity is one of the foundations for scientific training. Commonly used assessment indicators are:
1 , the sports center rate: the size of the body's load and heart rate is proportional to the level of high, so the heart rate and the body's exercise intensity when the exercise is also a certain proportion of the relationship, the greater the exercise intensity, the body's heart rate is also higher. The general criteria for dividing exercise intensity by heart rate are: the exercise center rate is greater than 180/divided into high-intensity exercise; the exercise center rate is between 130-170 beats/minute, which is moderate-intensity exercise; if the heart rate is less than 144 beats/minute, It is a small intensity exercise.
2 , blood pressure during exercise: Under normal circumstances, the level of systolic blood pressure and exercise intensity is proportional to the greater the exercise intensity, the higher the systolic blood pressure. It is generally believed that when intensive exercise, systolic blood pressure should be higher than 190mmHg, and diastolic blood pressure is lower than the quiet level.
3. Blood lactate: Determination of blood lactate levels during exercise is one of the most commonly used and objectively assessed exercise intensity indicators. It reflects the training mainly based on aerobic energy supply or anaerobic glycolysis. To reflect exercise intensity and guide training. It is generally believed that if the blood lactate level is higher than 4 mmo 1 /L, this exercise is a movement dominated by anaerobic glycolysis.
Blood lactate can also be used to assess the impact of training on the body's aerobic capacity, in this regard we can refer to the relevant books.
4 , urine protein: normal human urine protein content is very small, after strenuous exercise, urine protein can appear, the number of urinary protein and the amount of exercise intensity is directly related to, but also by the individual differences. After the exercise, urine protein appears to be an indication that the body does not adapt to the exercise training or the exercise is excessively strong. If new players enter the team or exercise proteinuria occurs after intense training, training can be continued and the medical service can be strengthened. Supervise and continuously measure protein content in the morning urine. If protein continues to be present in the urine, it indicates that the training intensity is too great or the player's physical condition is unhealthy. At this time, the training program should be adjusted and the cause of proteinuria should be checked.
5 , oxygen consumption: the use of the number of oxygen consumed by the body to assess the exercise intensity is a high accuracy method. However, the direct measurement of this indicator requires more complex equipment and cannot be performed in sports training. In order to facilitate the application in training, the maximum heart rate can be used instead of the maximum oxygen consumption.
Some scholars have suggested that exercising at 70% of the maximum heart rate is equivalent to exercising 50 to 55% of aerobic capacity.
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