Rat demographics, and estimated cystometric and logistic CRC parameters

	Old	Young
Mean ± SEM wt:
Bladder (gm)	0.33 ± 0.01	0.16 ± 0.01*
Body (gm)	616.7 ± 16.62	314.5 ± 8.8
Bladder/body	0.53 × 10−3 ± 0.1 × 10−4	0.52 ± 10−3 ± 0.2 × 10−4
Mean ± SD cystometric parameters:
BC (ml)	1.78 ± 0.16	1.169 ± 0.114*
RV (ml)	0.29 ± 0.06	0.12 ± 0.03*
MV (ml)	1.49 ± 0.12	1.05 ± 0.12*
SA (cm H2O)	8.94 ± 1.20	3.68 ± 0.89*
MF (No. voids/hr)	9.65 ± 1.08	6.16 ± 0.43*
BP (cm H2O)	10.99 ± 1.32	7.37 ± 1.13*
MP (cm H2O)	50.32 ± 3.13	69.59 ± 3.16*
IMP (cm H2O)	19.92 ± 1.33	11.05 ± 1.25*
TP (cm H2O)	23.19 ± 1.9	22.15 ± 2.12
Bcom	0.18 ± 0.03	0.11 ± 0.03
Mean ± SD logistic parameters:
Emax	60.8 ± 11.9	110.7 ± 17.6*
pEC50	5.43 ± 0.09	5.38 ± 0.17
Slope	1.06 ± 0.13	1.30 ± 0.09

^*Significantly different (Student’s t test).