294204.fig.005a
(a)
294204.fig.005b
(b)
Figure 5: Top half displays the interaction between prebeat duration and force development at 2 Hz. The correlation coefficients are increasingly tighter as the preload stretch is increasingly applied. On the bottom half, we depict the same phenomena at the higher frequency (4 Hz). The correlation here is more evident and significantly different statistically ( ) from the initial nonstretch correlation value of 0.56.