Filippidou Χ., Loupos Δ., Zafireiadis Σ. and Barkoukis Β. 2014. Intensity and Direction of Precompetitive Anxiety: A Study of the Individual Zones of Optimal Functioning Theory in Swimming. Inquiries in Physical Education and Sport. 12, 2 (Apr. 2014), 90–100. DOI:https://doi.org/10.26253/heal.uth.ojs.ispe.2014.1422.