Wyniki wyszukiwania - Biblioteka Nauki

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Relationships Between Systolic Time Intervals and Heart Rate During Initial Response to Orthostatic Manoeuvre in Men of Different Age

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Cybulski G. , Niewiadomski W. , Strasz A. , Laskowska D. , Gąsiorowska A.

Journal of Human Kinetics

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2009

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tom 21

57-64

EN

An analysis of transient changes in physiological parameters in response to the standardized tests could be used to evaluate the efficiency of the regulatory processes. Relationships between systolic time intervals and heart rate following the action of standing up from the supine position were investigated in 41 healthy men, aged 20 to 59 years, classified into three groups: (22 to 26 yrs, n=14), (33 to 49, yrs, n=13) and (51 to 59 yrs, n=14). The protocol consisted of the following sequence: laying down (20 minutes) - standing up (8 minutes). Ejection time, pre-ejection period, electromechanical systole, heart rate and the length of R-R intervals were continuously calculated using automatized impedance cardiography and electrocardiogram. The ratio of ejection time to pre-ejection period in young men was significantly higher in comparison with the other groups. The ratio of ejection time to the length of R-R interval increased with age in supine position and after standing up when R-R interval was maximal. It was suggested that changes of ejection time to pre-ejection period during the orthostatic manoeuvre are rather the result of balance between heart rate and hemodynamic factors, than solely related to heart rate.

2

Influence of age on the immediate heart rate response to the active orthostatic test

100%

Cybulski G. , Niewiadomski W.

Journal of Physiology and Pharmacology

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2003

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tom 54

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nr 1

EN

Dynamics of the heart rate changes following standing up from the supine position was investigated in 41 healthy men aged 20 to 59 years, classified according to the age into three groups: (22 to 26 yrs, n=14), (33 to 49, yrs, n=13) and (51 to 59 yrs, n=14). The protocol consisted of twice repeated sequence: lying down - standing up - lying down. The subjects remained in each position for 8 minutes. The average and beat-to-beat heart rate (HR) were continuously calculated using the specialized computer program analysing ECG. The initial response was analysed using both the indices known from literature and newly introduced by the authors. The high reproducibility of the response was observed and the correlations between the indices were analysed. The relationship between the indices characterising the pattern of the response and age were analysed using the linear regression model. Most of these indices showed a tendency towards attenuation of the HR response with age. The closest correlation with age was found for the index characterising the initial increase of HR after standing up (r=-0.610, p<0.001). There were no correlations between the indices of HR response to standing up and the height or body mass of the healthy subjects.

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ВПЛИВ КОМПЛЕКСНОЇ ПРОГРАМИ ФІЗИЧНОЇ РЕАБІЛІТАЦІЇ НА НЕЙРОГУМОРАЛЬНУ РЕГУЛЯЦІЮ СИСТЕМИ КРОВООБІГУ СТУДЕНТОК СПЕЦІАЛЬНОЇ МЕДИЧНОЇ ГРУПИ ІЗ ВЕГЕТО-СУДИННОЮ ДИСТОНІЄЮ ЗА ЗМІШАНИМ ТИПОМ

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Ольховик А.

Педагогічні науки: теорія, історія, інноваційні технології

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2016

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nr 3(57)

229-235

EN

In the article the impact of a comprehensive physical rehabilitation program for students on neurohumoral regulation of the main group compared to the students of the comparison group, who were engaged according to the standard physical education program, is investigated. The aim of the study is to determine the changes in neurohormonal regulation of the blood circulatory system of students of special medical group with the disease of vegetative-vascular dystonia on the mixed type during the study. The study was conducted at the Ukrainian Academy of Banking of the National Bank of Ukraine during September 2011–May 2014. The study involved 40 students, who for health reasons attributed to a special medical group with vegetative-vascular dystonia on the mixed type. To study the efficiency of the development program of physical rehabilitation was formed two homogeneous groups of the students (basic and comparison group). The main group was engaged according to the developed integrated program of physical rehabilitation. A distinctive feature of the developed comprehensive physical rehabilitation program for a main group of the students was a combined selection of fitball exercises, breathing exercises by O. M. Strelnikova, treatment and acupressure, aqua aerobics as a single class, and the whole cycle of physical rehabilitation. With the students of a comparison group the classes were conducted in accordance with a generally accepted program of physical education for the students with cardiovascular disease, which included general developmental exercises, therapeutic physical training, breathing exercises, exercises for posture correction, sports and applied exercises, outdoor and sports games. The results of the study indicate that the dynamics of an orthostatic test at baseline and at the end of research was a statistically significant difference of the students of the main group, where the average indicator decreased by 15,05 beats min-1, and the students in the comparison group – by 11,50 beats a min-1. The clinical-static test of the students was decreased in the main group by 13,65 beats a min-1, and the students in the comparison group – by 11,1 beats a min-1. After analyzing the dynamics of changes in clinic and orthostatic the tests has concluded that the prevalence of the sympathetic division of the autonomic nervous system is a feature of the vascular wall that may be genetically determined, and the predominance of the parasympathetic division of the autonomic nervous system; the features are contractile ability of myocardial that can also be reflection and genetic conditionality and constitutional features of morphology. Prospects of further scientific studies is to improve the comprehensive physical rehabilitation program for the students of a special medical group with the disease of vegetative-vascular dystonia on the mixed type.