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FLORCZYK, Martyna, SŁUCHOCKA, Joanna, LEWALSKI, Tymon, LEWALSKI, Oskar, PŁUCIENNIK, Lidia and JERUĆ, Klaudia. Heart Rate Variability – Guided Training for Monitoring Training Quality in Recreational Athletes: A Narrative Review. Quality in Sport. Online. 17 March 2026. Vol. 52, p. 69713. [Accessed 22 April 2026]. DOI 10.12775/QS.2026.52.69713.