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Biological factors and self-perception of stress in relation to freeze-like response in humans

M. Vít, J. Kučera, P. Lenárt, J. Novák, F. Zlámal, Z. Reguli, M. Bugala, J. Čihounková, P. Přecechtěl, V. Malčík, T. Vojtíšek, JF. Kučerová, V. Eclerová, M. Tomandlová, R. Šíp, L. Ráčková, M. Grulichová, J. Tomandl, J. Bienertová-Vašků

. 2023 ; 158 (-) : 106382. [pub] 20230909

Language English Country England, Great Britain

Document type Journal Article, Research Support, Non-U.S. Gov't

Persistent link   https://www.medvik.cz/link/bmc24000480

Many animals react to threatening stimuli such as a predator attacks by freezing. However, little experimental research investigated freeze response in humans. Here, we have employed practices commonly used in self-defense training to create two unique scenarios simulating armed physical threat. Sixty healthy men volunteers divided into three groups of twenty (untrained, trained but unexperienced, trained and experienced) underwent these scenarios accompanied by measurement of biochemical, physiological, and psychological markers of stress. Our results show that untrained individuals exhibit stronger freezing reactions, while highly skilled participants display the lowest propensity for freezing, especially in high-intensity scenarios. Moreover, the study shows variations in anxiety levels and selected biomarkers, with cortisol and osteocalcin showing different patterns in low and high-intensity scenarios, and suggests a complex interplay between these factors, electrodermal activity, and stress perception.

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$a Vít, Michal $u Department of Physical Education and Social Sciences, Faculty of Sports Studies, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Biological factors and self-perception of stress in relation to freeze-like response in humans / $c M. Vít, J. Kučera, P. Lenárt, J. Novák, F. Zlámal, Z. Reguli, M. Bugala, J. Čihounková, P. Přecechtěl, V. Malčík, T. Vojtíšek, JF. Kučerová, V. Eclerová, M. Tomandlová, R. Šíp, L. Ráčková, M. Grulichová, J. Tomandl, J. Bienertová-Vašků
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$a Many animals react to threatening stimuli such as a predator attacks by freezing. However, little experimental research investigated freeze response in humans. Here, we have employed practices commonly used in self-defense training to create two unique scenarios simulating armed physical threat. Sixty healthy men volunteers divided into three groups of twenty (untrained, trained but unexperienced, trained and experienced) underwent these scenarios accompanied by measurement of biochemical, physiological, and psychological markers of stress. Our results show that untrained individuals exhibit stronger freezing reactions, while highly skilled participants display the lowest propensity for freezing, especially in high-intensity scenarios. Moreover, the study shows variations in anxiety levels and selected biomarkers, with cortisol and osteocalcin showing different patterns in low and high-intensity scenarios, and suggests a complex interplay between these factors, electrodermal activity, and stress perception.
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$a Kučera, Jan $u Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic; Department of Physical Activities and Health Sciences, Faculty of Sports Studies, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Lenárt, Peter $u Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Novák, Jan $u Department of Physical Education and Social Sciences, Faculty of Sports Studies, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Zlámal, Filip $u Department of Physical Activities and Health Sciences, Faculty of Sports Studies, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Reguli, Zdenko $u Department of Physical Education and Social Sciences, Faculty of Sports Studies, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Bugala, Martin $u Department of Physical Education and Social Sciences, Faculty of Sports Studies, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Čihounková, Jitka $u Department of Physical Education and Social Sciences, Faculty of Sports Studies, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Přecechtěl, Pavel $u Department of Physical Education and Social Sciences, Faculty of Sports Studies, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Malčík, Vojtěch $u Department of Physical Education and Social Sciences, Faculty of Sports Studies, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Vojtíšek, Tomáš $u Department of Forensic Medicine, St. Anne's University Hospital, Tvrdeho 562/2a, 60200 Brno, Czech Republic; Department of Forensic Medicine, Faculty of Medicine, Masaryk University, Tvrdeho 562/2a, 60200 Brno, Czech Republic
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$a Kučerová, Jana Fialová $u Department of Pathophysiology, Faculty of Medicine, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Eclerová, Veronika $u Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic; Department of Mathematics and Statistics, Faculty of Science, Masaryk University, Kotlarska 2, 61137 Brno, Czech Republic
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$a Tomandlová, Marie $u Department of Biochemistry, Faculty of Medicine, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Šíp, Radek $u Department of Physical Education and Social Sciences, Faculty of Sports Studies, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic; Department of Psychology, Faculty of Arts, Masaryk University, Arna Novaka 1, 60200 Brno, Czech Republic
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$a Ráčková, Lucie $u Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Grulichová, Markéta $u Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic; Department of Pathophysiology, Faculty of Medicine, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Tomandl, Josef $u Department of Biochemistry, Faculty of Medicine, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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$a Bienertová-Vašků, Julie $u Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic; Department of Physical Activities and Health Sciences, Faculty of Sports Studies, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic; Department of Pathophysiology, Faculty of Medicine, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic. Electronic address: julie.dobrovolna@med.muni.cz
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