ISSN 2415-3060 (print), ISSN 2522-4972 (online)
  • 38 of 41
УЖМБС 2017, 2(5): 184–187

Wave Structure of Heart Rhythm in Women under the Psychoemotional Pressure

Lutsenko Olena

Features of the wave structure of heart rate variability (HRV) usually reflect the dynamics of regulatory processes in humans and animals. However, most of the studies on physiological characteristics are conducted on men. The problem of the heart rate fluctuations frequency structure during long-term mental pressure with a significant psycho-emotional component in women hasn’t been studied properly. Therefore, the purpose of the study was to investigate the wave structure of the cardiac rhythm in women in different phases of the ovarian-menstrual cycle (OMC) under the conditions of psycho-emotional pressure. Materials and methods. 32 female students in the prone condition were examined while performing a 10-minute mental pressure using the method of M.V. Makarenko. Each of the trials was performed three times: in follicular phase (I), ovulation (II) and luteal phase (III) of ovarian-menstrual cycle. The power of the R-R spectrum was calculated in the standard frequency bands 0-0.04 Hz (VLF), 0.04-0.15 Hz (LF), 0.15-0.4 Hz (HF), 0-0.4 Hz (TP), normalize the power in the range of 0.15-0.4 Hz (HFnorm). In addition, the spectral density (aLF) and the frequency (tLF) of the highest amplitude peak in the range 0.04-0.15 Hz were estimated. In order to find out the features of the wave structure in this range, a median spectrograph was constructed with a step of 0.01 Hz. Due to the abnormality of the data distribution, their processing was carried out using nonparametric statistical methods. Results. It was found out that there were no significant differences between the levels of the analyzed parameters of HRV, depending on the phase of OMC. Under the conditions of psycho-emotional pressure in all phases of OMC, a high (p<0.001) decrease in R-R, HF, HFnorm, TP was observed. The reactivity to the loading of LF in phase I (18.1 [-31.6; 75.1]%) significantly differed from the changes in the II phase (-17.6 [-51.7, 50.2]%) and III (-23.9 [-64.6, 69.7]%) of the phases of the OMC. The decrease in HFnorm in the III phase was the lowest compared to the II and higher than on the first phase. In terms of psycho-emotional stress, there is a significant difference between the levels of LF and TP in III compared to the II and I phases. The activation of the sympathetic part of the VNS by the HFnorm index was highest in the follicular and luteal phases. It is noteworthy that the greatest deviation of the values of the reactivity to the emotional pressure and the intragroup variation is typical for the indicators that characterize the frequency range of the oscillations R-R from 0.04 to 0.15 Hz. In this connection, a detailed analysis of the distribution of the waves of the heart rate in it was carried out in a normalized median spectrogram. Conclusions. It was found out that under the conditions of psycho-emotional pressure changes in the wave structure were expressed the most during the first phase, the less – during the III phase. The nature of spectral power distribution in phase I of the OC under conditions of psycho-emotional pressure was significantly different from the distribution under the other conditions. The presence of two peaks, which can characterize the influence of various regulatory mechanisms, was also observed.

Keywords: heart rate variability, ovarian cycle, heart rate, psycho-emotional pressure

Full text: PDF (Ukr) 203K

  1. Kovalenko SO, Kudiy LI. Varibelnist sertsevoho rytmu. Metodychni aspekty. Cherkasy: Cherkaskyi natsionalnyi universytet im B Khmelnytskoho, 2016. 269 s. [Ukrainian].
  2. Kovalenko SO. Regulatory rhythms of haemodynamics and their individual features at people: Dis. Dr. Sci. (Biol.). Cherkasy; 2009. 372 s. [Ukrainian].
  3. Makarenko MV. Metodyka provedennya obstezhen ta otsinky indyvidualnykh neyrodynamichnykh vlastyvostey vyshchoi nervovoi diyalnosti lyudyny. Fiziolohichnyi zhurnal. 1999; 4 (45): 125-31. [Ukrainian].
  4. Pikovskiy A, Rozenblyum M, Kurte Yu. Sinkhronizatsiya. Fundamentalnoe nelineynoe yavlenie. M: Tekhnosfera, 2003. 496 s. [Russian].
  5. Milic M, Sun P, Liu F, Fainman C, Dimsdale J, Mills PJ, Ziegler MG. A comparison of pharmacologic and spontaneous baroreflex methods in aging and hypertension. J Hypertens. 2009; 27 (6): 1243-51.
  6. Ball A, Wolf CC, Ocklenburg S, Brüne M, Wolf OT, Güntürkün O, Pinnow M. The type of implicit motive enactment is modulated by sex hormones in naturally cycling women. Physiol Behav. 2014; 123: 119-26.
  7. Bayer U, Kessler N, Güntürkün O, Hausmann M. Interhemispheric interaction across the menstrual cycle. Neuropsychologia. 2008; 46: 2415–22.
  8. Cooley RL, Montano N, Cogliati С, van de Borne P, Richenbacher W, Oren R, Somers VK. Evidence for a central origin of low-frequency oscillation in RR-inter- val variability. Circulation. 1998; 98: 556-61.
  9. Gevese A, Gulli G, Polati E, Gottin L, Grasso R. Baroreflex and oscillation of heart period at 0.1 Hz stud¬ied by a-blokade and cross-spectral analysis of healthy humans. J Physiol. 2001; 531 (1): 235-44.
  10. Hatta T, Nagaya K. Menstrual cycle phase effects on memory and Stroop task performance. Arch Sex Behav. 2009; 38 (5): 821-7.
  11. Heart rate variability. Standards of measurement, physiological interpretation, and clinical use. Task Force of the European Society of Cardiology and the North American Society of Pacingand Electrophysiology. Eur Heart J. 1996 Mar; 17 (3): 354-81.
  12. Hausmann M, Hamm P, Waldie KE, Kirk IJ. Sex hormonal modulation of interhemispheric transfer time. Neuropsychologia. 2013; 51: 1734–41.
  13. Pokrovskii VM. Alternative Viev on the Mechanism of Cardiac Rhythmogenesis. Heart, Lung Circ. 2003; 12 (Issue 1): 18-24.
  14. Sebastian Ocklenburg, C. Wolf Claudia, Heed Tobias, Anna Ball, Holger Cramer, Brigitte Röder, Onur Güntürkün. Multisensory integration across the menstrual cycle. Front Psychol. 2013; 4: 666.
  15. Tenan MS, Brothers RM, Tweedell AJ, Hackney AC, Griffin L. Changes in resting heart rate variability across the menstrual cycle. Psychophysiology. 2014; 51 (10): 996-1004.
  16. von Holzen JJ, Capaldo G, Wilhelm M, Stute P. Impact of endo- and exogenous estrogens on heart rate variability in women: a review. Climacteric. 2016; 19 (3): 222-8.
  17. Yazar Ş, Yazıcı M. Impact of Menstrual Cycle on Cardiac Autonomic Function Assessed by Heart Rate Variability and Heart Rate Recovery. Med Princ Pract. 2016; 25 (4): 374-7.