The aim of this study was to investigate the relationship between reactive strength in a vertical and a horizontal drop jump (DJ). Subjects (n = 28) with previous jump training experience, performed 6 vertical DJs and 6 horizontal DJs from a 0.4-m box. Contact time, height jumped, distance jumped, and reactive strength index (RSI) were calculated and analyzed.
Ball, N., & ZANETTI, S. (2012). Relationship between reactive strength variables in horizontal and vertical drop jumps. Journal of Strength and Conditioning Research, 26(5), 1407-1412. https://doi.org/10.1519/JSC.0B013E3182510870