Diagnosis of voiding dysfunction by pressure-flow study in women

Figure 1 Hill curves relating active force to velocity of shortening at a given muscle length. Curves are shown for two different muscle lengths, corresponding to the same bladder when full (upper curve) and when nearly empty (lower curve: Volume approximately 12.5% of capacity). (From Griffiths[8]. Assessment of detrusor contraction strength or contractility. Neurourol Urodyn 1991; 10: 1; with permission).