Table 4. Relationships between 30m sprint speed and muscle architecture in the dominant and non-dominant limbs in men (n=14) and women (n=14) [r (p-value)]. Rectus Femoris Vastus Lateralis Men Women Men Women Muscle Thickness (cm) Dominant .16 (.63) .14 (.65) .01 (.98) -.34 (.24) Non-Dominant .29 (.27) .32 (.27) .22 (.37) -.24 (.34) %DIFF -.20 (.49) .34 (.22) .21 (.47) .03 (.93) Pennation Angle (°) Dominant -.69 (.01) .07 (.82) -.04 (.89) .50 (.07) Non-Dominant -.56 (.04) -.50 (.07) -.16 (.58) .32 (.28) %DIFF .10 (.74) .49 (.08) -.05 (.87) .35 (.22) Fascicle Length (cm) Dominant .54 (.05) .02 (.94) .06 (.85) -.50 (.07) Non-Dominant .65 (.01) .59 (.03) .29 (.31) -.32 (.26) %DIFF -.10 (.74) .57 (.03) -.11 (.72) .17 (.56) Cross-Sectional Area (cm2) Dominant -.01 (.98) .07 (.80) .44 (.12) .16 (.58) Non-Dominant -.20 (.51) -.07 (.82) .44 (.12) .40 (.16) %DIFF -.48 (.08) .42 (.13) -.17 (.55) -.38 (.18) Echo Intensity (au) Dominant -.02 (.94) .39 (.17) -.38 (.19) .20 (.50) Non-Dominant -.02 (.95) .44 (.12) -.48 (.08) .09 (.75) %DIFF .02 (.92) -.29 (.32) -.25 (.38) -.01 (.99) ‡ %DIFF = Absolute percent difference between dominant and non-dominant limbs.