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[HR AND DURATION OF ECG ELEMENTS OF AN ADULT DURING PHYSICAL EXERCISES].

The degree of heart rate (HR) and of duration PP, PT and TP elements electrocardiogram (ECG) before and after physical exercises (PE) depends on their value in the control, in healthy young girls (n = 21), aged 18.1 ± 0.7 years, body weight 56.5 ± 4.0 kg. The 300 cardiocycles by ECG at II standard lead were registered. Рower of PE was 1 W/kg. The growth of the HR after PE at the time of depolarization and repolarization (PT interval) remains practically unchanged, whereas the duration of the isopotential state of the myocardium (segment TP) is revealed. The PP intervals of long duration are shortened by 60%, low duration - by 30 %. The variability of PP interval in control due to the variability of the TP segment, in the experience of the PT interval was found.

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