“Positive Emotions, Identity–existential Dimension, ‘mind-Expansion’ Effect, and Environmental Factors: a Pilot Study on a Sample of Skyrunners.: Part One: Theoretical Background”. Sport and Exercise Psychology , vol. 3, no. 1, Dec. 2025, https://www.ledijournals2.bdtopten.com/index.php/pse/article/view/3067.