Haleva, Yossi, Aya Ekshtein, Leonid Kaufman, Eyal Shargal, and Yoav Meckel. “Short-Term Sleep Extension in Adolescent Swimmers: Real-World Crossover Findings on Sleep, Mood, and Performance: A Real-World Two-Period Crossover in Adolescent Competitive Swimmers”. International Journal of Physical Education, Fitness and Sports 14, no. 4 (December 19, 2025): 15–26. Accessed April 26, 2026. https://ijpefs.org/index.php/ijpefs/article/view/709.