The effect of postural tests on the electrocardiogram elements duration

About the author:

Lev I. Irzhak,

Abstract:

The effect of orthoclinostatic test (OCT) and clinoorthostatic test (COT) on the heart muscle properties have been studied. Eight male basketball-players aged 17-25 years volunteered in the tests. There were shown the mean value (M±SD, sec) of electrocardiogram elements (PP, PT, and TP) duration for 100 cardiac cycles, cardiointervalogram (CIV) and spectral power (SP) of the heart rate variability. In upright position, PP duration was 0.75±0.10 sec; РТ — 0.48±0.03 sec; ТР — 0.28±0.08 sec. PT partition amounts as much as 64% of the total PP duration, TP — 36%. Correlation (rp) of PP/PT was 0.28±0.13; РР/ТР — 0.88±0.08. CIV demonstrated minimal variability as compared to higher PP and TP variability. Bradicardia was revealed in a lying position (OCT), PP duration increased up to 1.01±0.12 sec; РТ — up to 0.53±0.04 sec; ТР — up to 0.48±0.11 seс. PT partition amounts as much as 52% of the total PP duration, TP — 48%. PP/PT correlation was 0.30±0.09; РР/ТР — 0.94±0.06. CIV/PP variability was at minimal level as before, PP and TP increased comparatively. In an upright position (COT), all indices returned to base level. SP had shown that HF increased from 370±340 (base) to 3860±2175 (ОCT) and decreased to 412±330 ms² (COT). VLF changed from 1111±483 (base) up to 1517±1080 and then to 1862±1261 ms². LF changed from 1046±519 to 2290±1759 and then to 1368±828 ms².

References:

1.             Bayevsky R. M. Analiz variabelnosti serdechnogo ritma: istoriya i filosofiya, teoriya i praktika [Analysis of Heart Rhythm Variability: History and Philosophy, Theory and Practice] // Klinich. informatika i telemedicina [Clinical Informatics and Telemedicine]. 2004. No 1. Pp. 54-65. (In Russian)

2.             Butchenko L. A., Vedernikov V. V., Svetlichnaya V. S. O geneze sinusovoy bradikardii [Genesis of Sinus Bradycardia] // Teoriya i praktika fizicheskoy kultury [Theory and Practice of Physical Culture]. 1986. No 8. Рp. 46-47. (In Russian)

3.             Dernovoy B. F., Irzhak L. I. Kardiogemodinamika pri vyzvannyh izmeneniyah venoznogo vozvrata k serdcu u severyan [Cardiohaemodinamics at the Caused Changes of Venous Return to Heart among the People of the North] // Ekologiya cheloveka [Human Ecology], 2013. No 12. Pp. 48-51. (In Russian)

4.             Ivanov G. G. Struktura variabelnosti serdechnogo ritma pri analize PP- i PR-intervalov u bolnyh s razlichnymi formami IBS [Variability Structure of Heart Rhythm in the Analysis of PP-and PR Intervals among the Patients with Various Forms of CAD] // Mir biologii i mediciny. Novye metody elektrokardiografii [The World of Biology and Medicine. New Methods of Electrocardiography]. 2007. M.: Tekhnosfera. Chapter 5. Pp. 51-549.

(In Russian)

5.             Karpman V. L., Parin V. V. Izmeneniya serdechnyh vybrosov pri nekotoryh fiziologicheskih sostoyaniyah [Changes of Heart Emissions at Some Physiological States] // Fiziologiya krovoobrascheniya. Fiziologiya serdca [Blood Circulation Physiology. Heart Physiology], 1980. Leningrad: Nauka [Science]. Рp. 275-280. (In Russian)

6.             Karpman V. L., Parin V. V. Velichiny serdechnogo vybrosa [Heart Emissions] // Fiziologiya krovoobrascheniya. Fiziologiya serdca [Blood Circulation Physiology. Heart Physiology], 1980. Leningrad: Nauka [Science]. Рp. 271-272. (In Russian)

7.             Rаgozin A. N. Informativnost spektralnyh pokazateley variabelnosti serdechnogo ritma [Information on Spectral Indicators of Heart Rhythm Variability] // Vestnik aritmologii [Arrhythmology Herald]. 2001. No 22. Pp. 37-40. (In Russian)

8.             Sorokin O. V. Osobennosti dispersii RR-, QT- i TQ-periodov u podrostkov pri provedenii ortostaticheskoy proby [Features of Dispersion of RR-, QT-and the TQ Periods among Teenagers when Carrying Out Orthostatic Test] // Medicina i obrazovanie v Sibiri: setevoe nauchnoe izdanie [Medicine and Education in Siberia: Online Scientific Publication]. 2012. No 4. http//:ngmu.ru/cozo/mos/articke/text_full.php? id=761 (In Russian)

9.             Ushakov I. B., Orlov O. I., Bayevsky R. M., Bersenev E. Yu., Chernikova A. G. Novye tehnologii ocenki zdorovya u prakticheski zdorovyh lyudey [New Technologies of Health Assessment of Healthy People] // Ross. fiziol. zh. named after. I. M. Sechenov [Russian Journal on Physiology (Formerly I. M. Sechenov Physiological Journal)]. 2013. Vol. 99. No 3. Pp. 313-319. (In Russian)

10.         Khaspekova N. B. Monitoring variabelnosti ritma serdca: diagnosticheskaya informativnost [Monitoring of Heart Rhythm Variability: Diagnostic Informational Content] // Internet-zhurnal po funkcionalnoy diagnostike [Online Journal on Functional Diagnostics]. www.fdpro.ru (In Russian)

11.         Jibbs C. J. Cardiac energetics. Physiol. rewiews. 1978. Vol. 58. Pp. 174-254.

12.         Reindell H. Herz-Kreislaufkrankungen und Sport. Münich, 1960. 301 р. (In German)