Differentiation of Adaptive Phenotypes of Students According to the Data of Heart Rate Variability in the Post-Exercise Period

Bocharin, Ivan V.; Krokhin, Dmitry V.; Balina, Maria V.; Zarembovsky, Mikhail A.; Fedorova, Marina V.

Journal of Stress Physiology & Biochemistry, Vol. 22 No. 1 2026, pp. 48-54 ISSN 1997-0838
Original Text Copyright (cc) 2026 by Bocharin, Guryanov, Balina, Zarembovsky and Fedorova

ORIGINAL ARTICLE

Differentiation of Adaptive Phenotypes of Students According to the Data of Heart Rate Variability in the Post-Exercise Period

Ivan V. Bocharin¹, Dmitry V. Krokhin¹, Maria V. Balina¹, Mikhail A. Zarembovsky² and Marina V. Fedorova³

¹ Department of physical culture and sport, Privolzhsky Research Medical University, 603155, Russia, Nizhny Novgorod, Minin and Pozharsky sq., 10/1
² Educational and methodical department of Physical culture and Sports, Linguistics University of Nizhny Novgorod, 603155, Russia, Nizhny Novgorod, Minina St., 31a
³ Higher School of Social Sciences, Linguistics University of Nizhny Novgorod, 603155, Russia, Nizhny Novgorod, Minina St., 31a

*E-Mail: bocharin.ivan@mail.ru

Received November 5, 2025

The aim of the study is to differentiate students by the level of adaptive reserves of the body in the post-loading period using cluster analysis.

Results: It was found that HRV parameters in the post-loading period reflect the heterogeneity of adaptive reactions. Cluster analysis allowed us to identify three groups of students: those with optimal, borderline, and stressed regulation. The first group is characterized by a balanced interaction of sympathetic and parasympathetic links, the second by a compensatory tension of regulatory mechanisms, and the third by a pronounced centralization of the heart rate and signs of functional maladaptation.

Conclusion: Heart rate variability indicators are a highly informative marker of the body's adaptive reserves. The cluster analysis method provides a personalized assessment of students' condition and can be recommended for optimizing physical fitness and preventing maladaptation conditions.

Key words: adaptive reserves, heart rate variability, physical activity, stress tests, students