Fig. 7. Comparison of maximum unloaded shortening velocity
(Vmax) in brief tetanus (50 Hz, 100 ms) at 20°C. (A)
Slack step test data for one CMP (open circles) and one SMR (filled circles)
preparation. (B) Maximum unloaded shortening velocity for the two different
muscle fibre preparations. The numbers above each bar are the mean ±
s.d. CMP fibres had a significantly higher Vmax than SMR
fibres (P=0.0003; ANOVA with Tukey HSD post hoc test).