. 2015 Jan 20;2015:373041. doi: 10.1155/2015/373041

Table 5.

Fetoplacental circulation between groups.

		Gestational age	Mean ± SD		P values
		Gestational age	Yoga (n = 27)	Control (n = 32)	P values
Umbilical artery	Systolic/diastolic ratio	20th wk	2.7 ± 0.41	3.3 ± 1.1	*0.001* ^a
	Systolic/diastolic ratio	28th wk	2.6 ± 0.5	2.9 ± 0.6	*0.031* ^a
	Pulsatility index	20th wk	1.01 ± 0.18	1.37 ± 0.34	*0.001* ^b
	Pulsatility index	28th wk	0.87 ± 0.18	1.05 ± 0.23	*0.001* ^b
	Resistance index	20th wk	0.65 ± 0.05	0.70 ± 0.09	*0.011* ^b
	Resistance index	28th wk	0.63 ± 0.08	0.66 ± 0.06	0.091 ^b

Fetal middle cerebral artery	Systolic/diastolic ratio	20th wk	5.02 ± 1.47	5.77 ± 2.04	0.537 ^b
	Systolic/diastolic ratio	28th wk	5.05 ± 1.64	6.62 ± 2.26	*0.01* ^b
	Pulsatility index	20th wk	1.86 ± 0.45	2.18 ± 0.67	0.151 ^b
	Pulsatility index	28th wk	1.74 ± 0.53	2.28 ± 1.10	*0.013* ^b
	Resistance index	20th wk	0.77 ± 0.07	0.80 ± 0.07	0.22 ^b
	Resistance index	28th wk	0.80 ± 0.08	0.85 ± 0.08	*0.048* ^b

^aCalculated using Independent Samples t-test.

^bCalculated using Mann-Whitney test.

Remarks: S/D ratio, PI, and RI parameters of umbilical and fetal middle cerebral arteries were significantly improved in the yoga group after 16 weeks of intervention, except for the RI of umbilical artery, which was near significance.