[Effect of prolonged head-down hypokinesia on cardiac bioelectrical activity according to corrected orthogonal ECG leads].
The effect of the time of head-down tilting on electrocardiographic parameters was consistent and significant (P < 0.05): a slight increase in heart rate in groups 1 and 3, an increased time of atrioventricular conductance, an increased amplitude of the QRS complex, and a decreased amplitude of T wave, primarily in groups 1 and 3. No dystrophic signs were detected. The high level of heart rate in group 3 during the recovery period suggests a more pronounced decline of functional capabilities of the heart. There are grounds to believe that countermeasures produce a relatively greater effect on the function of the myocardium than on its metabolism.
D000328:Adult; D001510:Bed Rest; D004562:Electrocardiography / Q000379:methods*; D006321:Heart / Q000502:physiology*; D006339:Heart Rate; D006801:Humans; D008297:Male; D011187:Posture; D013997:Time Factors
Vliiani dlitel'noĭ antiortostaticheskoĭ gipokinezii na bioélektricheskuiu aktivnost' serdtsa po dannym korrigirovannykh ortogonal'nykh otvedeniĭ EKG.