Role of sex hormones in gastrointestinal motility in pregnant and non-pregnant rats

Table 1 Gastrointestinal motility parameters recorded by AC biosusceptometry (cecum arrival and frequency of contractions) and by electromyography (frequency and amplitude of contractions) during pregnancy and the estrous cycle in female rats

	Days/phases	Frequency EMG (cpm)	Amplitude ACB (dB)	Amplitude EMG (dB)	Cecum arrival (min)
Pregnancy	0 (control)	70.0 ± 7.0	66.79 ± 14.41	52.82 ± 7.02	254 ± 10.8
	7	66.0 ± 6.0	72.12 ± 13.98	49.79 ± 9.64	244 ± 16.0
	14	59.0 ± 7.0a	71.62 ± 18.97	48.41 ± 7.55	255 ± 14.8
	20	65.0 ± 9.0	69.42 ± 12.75	52.97 ± 11.12	259 ± 19.9
Estrous cycle	Diestrus	65.0 ± 11.0	62.10 ± 7.59	55.54 ± 11.69	260 ± 26.5
	Proestrus	64.0 ± 4.0	54.04 ± 10.16	54.99 ± 7.47	270 ± 16.7
	Estrous	65.0 ± 8.0	52.08 ± 13.09	57.20 ± 8.27	268 ± 17.1
	Metestrus	68.0 ± 9.0	54.03 ± 10.79	54.66 ± 8.25	269 ± 21.2

Data are expressed as mean ± SD.

^aP < 0.03 vs control (day 0). EGM: Electromyography; ACB: AC biosusceptometry.