Abstract—
Based on the methodological basis of the concept of typological variability of the human physiological individuality, a systemic relationship between the indicators of spontaneous motor activity, morphofunctional status, and vegetative homeostasis in newborns in the late neonatal period was determined. Overall, 137 newborns (71 boys and 66 girls) at the age of 10–14 days were examined. The following set of methods was used: a comprehensive assessment of neonate physical development according to tables of the centile type, the determination of indicators of spontaneous motor activity (SMA) during the daily cycle, the assessment of the main cardiovascular system (CVS) data and daily monitoring of heart rate, heart rate variability parameters, the study of psychomotor status based on the state of muscle tone, evoked reflexes, and movements. The results of the study revealed the typological variability of spontaneous motor activity in healthy newborns in the late neonatal period with the identification of three functional types: newborns with low, medium, and high SMA. Complex evaluation of morphofunctional data, vegetative homeostasis, and psychomotor status in newborns with different levels of SMA identifies three variants of the physiological norm of psychomotor development: tonic (low SMA), harmonic (medium SMA), and kinetic (high SMA).
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ACKNOWLEDGMENTS
The authors are grateful to Marina Iosifovna Sosland, Cand. Sci. (Med.), Head of the Department of Newborns and Young Children, Regional Clinical Hospital no. 2 (Tyumen) (until December 2019); Victoria Alexandrovna Emel’yanova (since February 2021); Larisa Anatol’evna Egorova, Head of the Department of Ultrasound and Functional Diagnostics of the Children’s Hospital under Regional Clinical Hospital no. 2 (Tyumen).
Funding
The study was carried out within the state assignment Physiological Substantiation of the Preservation and Strengthening of the Physical and Mental Health of Children (Evaluation Criteria, the Basics of Prenosological Diagnosis, Correction of Dysregulatory Disorders) of the Ministry of Health of the Russian Federation (state registration no. 121052600125-3).
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E.A. Tomilova: writing the text of the manuscript, statistical processing of the obtained data and their interpretation, formulation of conclusions; V.V. Kolpakov: the concept and design of the study; T.V. Bespalova: conducting a literature search, analyzing and evaluating scientific information; S.N. Gordiychuk: participation in the survey and statistical data processing.
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Ethics approval. All procedures performed in studies involving human participants were in accordance with the biomedical ethics principles formulated in the 1964 Helsinki Declaration and its later amendments and approved by the local Ethics Committee of the Tyumen State Medical Academy (Tyumen), protocol no. 41 of November 30, 2011.
Informed consent. Each study participant provided a signed voluntary written informed consent after explanation of the potential risks and benefits, as well as the nature of the upcoming study, to him.
Conflict of interest. The authors declare that they have no conflict of interest.
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Translated by E. Babchenko
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Tomilova, E.A., Kolpakov, V.V., Bespalova, T.V. et al. Typological Variants of Spontaneous Physical Activity, Morphofunctional Status, and Vegetative Homeostasis for Newborns in the Late Neonatal Period. Hum Physiol 49, 545–553 (2023). https://doi.org/10.1134/S0362119723600248
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DOI: https://doi.org/10.1134/S0362119723600248