LOADING TESTING IN EVALUATING THE FUNCTIONAL STATE OF THE CARDIOVASCULAR SYSTEM OF BOYS OF ADOLESCENT AGE

Author(s):  E.V. Pshenichnaya, candidate of Sciences, associate Professor, Donetsk National Medical University name M. Gorky, Donetsk, Ukraine, PshenichnayaL@yandex.ru

Issue:  Volume 41, №1

Rubric:  Preventive Medicine

Annotation:  We conducted a study of the dynamics of electrophysiological processes occurring in the myocardium in response to physical exertion in adolescent boys with subclinical forms of cardiovascular pathology. The degree of physical fitness of the subject and his ability to withstand the load were evaluated by means of a treadmill test carried out according to the protocol Bruce 192 to adolescent boys with subclinical forms of cardiovascular pathology (main group) divided into 4 subgroups: I subgroup 53 adolescent boys with high normal blood pressure or "prehypertension", subgroup II – 45 teenagers with dyslipidemia, impaired glu-cose tolerance and prehypertension – metabolic syndrome, III subgroup – 51 boys with cardiac arrhyth-mias, IV subgroup – 43 teenage boys with pathological forms of geometry infarction and 50 healthy peers control group. The adolescent boys of the main group differed in their different levels of tolerance to physical activity. The physiological average level of tolerance was found in 67 (34.9±3.4%) adolescents and in a quarter of cases (24.0±3.1%) – the least favorable hypotonic type of hemodynamic reaction to the load, 44.8±3.6% of the examined patients had a dystonic type. A low chronotropic index was registered in adolescents of the main group significantly more often in comparison with the corresponding index of the control group.

Keywords:  treadmill test, cardiovascular system, adolescent boys.

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