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Functional tests

Compared with the resting state, the pulse is increased by no more than 25%, the maximum blood pressure is moderately increased, and the minimum does not change or slightly decreases. 3 minutes after the load, all indicators in the subject returned to their original values. With an inadequate response to physical activity, the pulse sharply quickens (by 50% or more than at rest), the maximum pressure decreases, and the minimum does not change or rises, the recovery period lasts 5-10 minutes or more. Each subsequent load is assigned only after a favorable reaction to the previous load.

Four main types of reaction (R. A. Kalyuzhnaya) of the cardiovascular system to standard physical activity (10-20 squats in 20-30 seconds) are distinguished. The first type (favorable reaction) - MO (minute volume) rises by no more than 30% of the initial level and in the third minute of the recovery period returns to the initial level. The second type (dysregulatory reaction) - MO increases by more than 30% of the initial level, then decreases slightly, but does not return to the initial level at the 35th minute of the recovery period (observed in children with vegetative-vascular dystonia of various origins). The third type (conditionally unfavorable, or late fatigue reaction) - MO, increasing in response to the load, by the 3-5th minute of the recovery period falls below the initial level - it is characteristic of secondary cardiopathies of toxic infectious origin with myocardial dystrophy. The fourth type (certainly an unfavorable or early fatigue reaction) - MO immediately after loading becomes lower than the original due to a decrease in stroke volume and systolic pressure, which is observed with myocarditis with a significant violation of the myocardial contractility.

Kushelevsky test. B. P. Kushelevsky proposed a reaction quality index (RCC), which allows one to evaluate the functional state of the cardiovascular system. RCC is determined by the formula: RCC = (PD2 - PD1) / (P2 - P1), where PD1, PD2 - pulse pressure before and after the load; P1, P2 - heart rate per minute before and after exercise.

The functional state of the cardiovascular system is assessed as good if the RCC is in the range of 0.5-1. In case of an adverse reaction of the circulatory system, RCC deviates from the norm in one direction or another.?
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Functional tests

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