STUDY OF CHANGES IN HEART RATE VARIABILITY IN CHILDREN WITH IODINE DEFICIENCY DURING THE SCHOOL YEAR
DOI:
https://doi.org/10.11603/1811-2471.2021.v.i2.12224Keywords:
heart rate variability, autonomic nervous regulation, children, iodine deficiencyAbstract
Assessment of the functional state of the cardiovascular system allows to assess the state of adaptation of the child's body and predict the possibility of pathology, including the thyroid gland, at the pre-nosological stage, are relevant and necessary for prevention.
The aim – to study during the school year at the autonomic nervous system functional state primary school children from iodine deficiency.
Material and Methods. Examined 243 children aged 6–10 years. We determined the iodine in urine and heart rate variability.
Results. At the end of the school year, compared to the beginning, children of class 1 secured iodine index decreased adequacy regulation processes by 11 % (p<0.05), relationship stress index in the sample to the index in the background stress test at 38 % (p<0.05). Children in 2 class with iodine deficiency observed increase amplitude of fashion for 21 % (p<0.05), an indicator of the adequacy of regulation processes by 26 % (p<0.05), stress index by 56 % (p<0.05). In fourth-observed performance index increase tension by 28 % (p<0.05) and reduction of the standard deviation of 37 % (p<0.05). Found that in children with iodine deficiency prevails sympatyc effect autonomic nervous system.
References
Babii, I.L., Velychko, V.I., & Venher, Y.I. (2011). Adaptatsiini mozhlyvosti shkoliariv [Adaptive capabilities of students]. Zdorovie Rebionka – Child Health, 8 (35), 20-24 [in Russian].
Basanets, L.M., & Ivanova, O.I. (2010). Vplyv mikrosotsialnoho seredovyshcha na fizychnyi rozvytok i stan zdorovia ditei ta pidlitkiv [The impact of the microsocial environment on the physical development and health of children and adolescents]. Dovkillia i zdorovia – Environment and Health, 1, 52-55 [in Ukrainian].
Berezhnyi, V.V., & Romankevych, I.V. (2015). Zastosuvannia vyznachennia variabelnosti sertsevoho rytmu u ditei [Application of determination of heart rate variability in children]. Sovriemiennaia piediatriia – Modern Pediatrics, 1(65), 87-90 [in Russian].
Hlazkov, Ye.O. (2012). Pokaznyky tsentralnoi hemodynamiky pry porushenni adaptatsii studentiv molodshykh kursiv do navchalnoi diialnosti [Indicators of central hemodynamics in violation of the adaptation of junior students to educational activities]. Ukrainskyi zhurnal ekstremalnoi medytsyny imeni H.O. Mozhaieva – H. Mozhaiev Ukrainian Journal of Extreme Medecine, 13(3), 18-21 [in Ukrainian].
Kostromina, V.P., Rechkina, O.O., & Yaroshchuk, L.B. (2014). Adaptatsiino-rezervni mozhlyvosti orhanizmu ditei khvorykh na bronkhialnu astmu [Adaptation-reserve capabilities of the body of children with asthma] Astma ta alerhiia – Astma and Allergy, 3, 13-19 [in Ukrainian].
Mahlovanyi, A.V., Plastunov, B.A., & Kovaliv, M.O. (2012). Otsinka funktsionalnykh rezerviv sertsevo-sudynnoi systemy studentiv-pershokursnykiv zalezhno vid vmistu yodu ta svyntsiu v orhanizmi [Assessment of functional reserves of the cardiovascular system of first-year students depending on the content of iodine and lead in the body]. Lvivskyi medychnyi chasopys – Lviv Medical Journal, 18 (2), 91-95 [in Ukranian].
Mamenko, M.Ye. (2013). Yodnyi defitsyt ta yododefi-tsytni zakhvoriuvannia (lektsiia) [Iodine deficiency and iodine deficiency disorders – A lecture notes]. Perinatologiya i pediatriya – Perinatology and Pediatrics, 1 (53), 97-105 [in Ukrainian].
Mykhailov, V.M. (2008). Varyabelnost rytma serdtsa. Opyt praktycheskoho prymenenyia metoda. [Heart rate variability. Experience in practical application of the method]. Ivanovo [in Russian].
Riabukha, O.I. (2018). Deiaki aspekty vplyvu shchytopodibnoi zalozy na stan orhanizmu v umovakh normy i patolohii [Some aspects of the impact of the thyroid gland on the state of the body in normal and pathological conditions]. Aktualni problemy suchasnoi medytsyny: Visnyk ukrainskoi medychnoi stomatolohichnoi akademii – Actual Problems of Modern Medicine: Bulletin of the Ukrainian Medical Dental Academy, 18 (3), 324-330 [in Ukrainian].
Riabukha, O.I. (2018). Do strukturnykh ta funktsionalnykh peredumov vynyknennia tyreoidnoi patolohii (ohliad literatury) [To the structural and functional preconditions for the occurrence of thyroid pathology]. Zdobutky klinichnoi i eksperymentalnoi medytsyny – Achievements of Clinical and Experimental Medicine, 2, 16-24 [in Ukrainian].
Stroi, O.A., Slipachuk, L.V., Kazakova, L.M., & Reznikov, Yu.P. (2016). Otsinka adaptatsiinykh mozhlyvostei shkoliariv mista Kyieva z yododefitsytom [Assessment of adaptation abilities of schoolchildren of the city of Kyiv with iodine deficiency]. Zdobutky klinichnoi i eksperymentalnoi medytsyny – Achievements of Clinical and Experimental Medicine, 3, 92-95 [in Ukrainian].
Tsiapets, H.B. (2010) Rol avtonomnoi nervovoi systemy u adaptatsii do navchalnoho protsesu odno- ta dvomovnykh ditei molodshoho shkilnoho viku: avtoref. dys. na zdobuttia nauk. stup. kand. biol. nauk: “Fiziolohia liudyny I tvaryny” [The role of the autonomic nervous system in the adaptation to the educational process of monolingual and bilingual children of primary school age: abstract of the dissertation for the degree of Candidate of Biological Science: “Physiology of man and animal”] Lviv [in Ukrainian].
Voronych, S.M., Pavlykivska, B.M., & Voronych-Semchenko, N.M. (2012). Physiological Aspects of Analysis of Heart Rate Variability Parameters in Adolescents with Latent Hypothyroidism. International Journal of Physiology and Pathophysiology, 3 (1), 151-331.
Dunn, J., Grutchfield, H.,. & Gutekunst, R. (1993). Two simple metods for measuring iodine in urine. Thyroid, 3, 119-123.
Ryabukha, O.I. (2019). Application of mathematical approaches in medicine on the example of follicular thyrocytes secretory activity study. World of Medicine and Biology, 1 (67), 181-187.
Yurchyshyn, O.M., Komissarova, O.S., Fartushok, T.V., Palytsia, L.M., & Lokai, B.A. (2020). Cardiovascular system indicators in the primary school aged children during the adaptation to educational loads in the region with iodine deficiency. World of Medicine and Biology, 1 (71), 149-153.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2021 Achievements of Clinical and Experimental Medicine
![Creative Commons License](http://i.creativecommons.org/l/by/4.0/88x31.png)
This work is licensed under a Creative Commons Attribution 4.0 International License.