Table 1. Important calculations for the energy values of gastrocnemius lateralis (GL) in the mid-low frequency band (d3), as well as rectus femoris (RF) in the high frequency band (d1), are presented for different groups at various knee starting angles (mean ± SD) (n = 13). Parameter Condition Knee starting angle (deg) 60° 90° 120° ANOVA results (A) GL-d3 energy values CG 0.98 ± 0.46 0.73 ± 0.68[0.43] 0.46 ± 0.59[0.98] F = 5.29 P = 0.024 SDG 0.96 ± 0.59 0.54 ± 0.58[0.72] 0.47 ± 0.6[0.82] StSG 0.78 ± 0.58 0.62 ± 0.52[0.29] 0.47 ± 0.58[0.53] RF-d1 energy values CG -0.17 ± 0.47 -0.15 ± 0.53* [0.04] -0.57 ± 0.34* [0.98] F = 6.99 P = 0.009 SDG -0.18 ± 0.51 -0.26 ± 0.55[0.16] -0.4 ± 0.38[0.48] StSG -0.06 ± 0.44 0.00 ± 0.49[0.12] -0.26 ± 0.49[0.43] The effect sizes of 90° and 120° relative to 60° are reported in square brackets. The two-way ANOVA results (A: angle effects, P- and F- value) are shown in the right column. ANOVA, analysis of variance; CG, Control Group; StSG, Static Stretching Group; SDG, Static Stretching and Drop Jump Combined Group. *: A significantly (P < 0.05) different from the 60°