Fig. 2.

Fiber type was assigned to each fiber by determining their rate constants of tension redevelopment (k_tr) following one cycle of activation. Using k_rf, normal levator veli palatini consists of 100 percent slow (type I) fibers, whereas the congenitally cleft palate consists of 14 percent slow (type I), 5 percent intermediate (type IIa), and 81 percent fast (type IIb) fibers. Each symbol represents one fiber and the bars denote the mean values.