SZAJ, Dominika, STRZAŁKOWSKA, Paulina, RACZKOWSKA, Michalina, HOBOT, Maciej and GRABSKI, Wojciech. Heart Rate Variability (HRV) as an Objective Indicator of the Stress Response: Physiological Mechanisms, Diagnostic Potential, and Clinical Applications. Quality in Sport. Online. 20 November 2025. Vol. 46, p. 66625. [Accessed 11 December 2025]. DOI 10.12775/QS.2025.46.66625.