The changes of R-R interval duration and stroke blood volume were measured during respiratory cycle at rest in prone position, at orthostatic test, with physical and mental loading among 157 healthy men aged 18-23. Significant inter-individual differences of shifts of stroke blood volume and R-R duration during respiratory cycle were found at rest and with loadings. The important aspect for assessing respiratory arrhythmia of R-R interval duration and stroke blood volume is the consideration of amplitudes of decreasing the level of these indexes on inhalation.

 Наукова періодика України 

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