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Warm-up prior to physical activity is a well accepted practice believed to reduce the risk of injury and enhance performance (McArdle, Katch, & Katch, 1991; Safran, Seaber, & Garrett, 1989). Various stretching techniques are commonly included in a warm-up to reduce muscle stiffness and increase the range ofmotion (ROM) atjoints. Stanley and McNair (1996) compared the effects ofrunning, static stretching, and combined running and stretching on muscle stiffness and ROM. While the combination of running and stretching were most effective for increasing ankle ROM, stretching added nothing to running to decrease musculotendinous (MTEN) stiffness. Although stretching is generally effective for inducing acute and chronic changes in ROM (Alter: 1996; Wienmann & Hahn 1997; Wiktorsson-Moller, Oberg, Ekstrand, & Gillquist, 1983), its effects on MTEN stiffness and the optimum stiffness for physicalperformance …