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  • Title: [Dynamics of cardiac rhythm in the transitional period during controlled physical exercises in persons of various ages].
    Author: Korkushko OV, Shatilo VB, Iaroshenko IuT, Shatilo TB.
    Journal: Fiziol Zh (1978); 1989; 35(3):38-42. PubMed ID: 2737326.
    Abstract:
    The transitional cardiac rhythm processes of work-in and recovery under standard dynamic loads of 25 and 50 W were studied in 90 healthy people aged 20-89 and in 15 elderly people being trained for endurance. The rhythmographic method was used for that purpose. Duration of the transitional processes (work-in and recovery) was revealed to considerably increase with age, while the cardiac rhythm increment--to decrease within the first 10 seconds of the work-in period. The data obtained suggest a worsened quality of the cardiac rhythm regulation in the transitional periods during aging, that is a result of an impairment of the vegetative influences on the sinoatrial node.
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