Table 3. Correlation coefficients (r) (90% Confidence Intervals; CI), explained variance and interpreted strength of relationships between peak force (rPF) for the countermovement jump (CMJ), squat jump (SJ) and isometric mid-thigh pull (IMTP), and; thickness of the lateral gastrocnemius (LG) and vastus lateralis (VL), and pennation angle VL. Variable One Variable Two r Explained Variance (%) p 90%CI Lower 90%CI Upper Strength of Relationship CMJ PF LG Thickness .66 44 <.01 .43 .90 Large VL Thickness .67 45 <.01 .44 .91 Large VL Pennation .54 29 <.01 .27 .80 Large SJ PF LG Thickness .71 50 <.01 .48 .92 Very Large VL Thickness .73 53 <.01 .50 .93 Very Large VL Pennation .58 37 <.01 .31 .83 Large IMTP PF LG Thickness .54 29 <.01 .27 .80 Large VL Thickness .67 45 <.01 .43 .90 Large VL Pennation .46 21 <.01 .18 .74 Moderate