Figure 7

Mean survival time (back row) and mean effective contraction time (front row). Group 1: green; survival time was 9.3 h and effective contraction time was 6.95 h, group 2: blue; survival time was 8.13 h and effective contraction time was 6.73 h, group 3: red; survival time was 13.3 h and effective contraction time was 13 h.