de Ruiter, Jo, Mark Heiden, Zoë Frederique Sedney, and Erik Wilmes. “Isolated Unweighted Fast Knee-Flexions Relate to Maximal Step Frequency and Sprint Speed in Female Track Athletes”. International Journal of Strength and Conditioning 6, no. 1 (July 17, 2026). Accessed July 23, 2026. https://journal.iusca.org/index.php/Journal/article/view/594.