Effects of Yoga on Utero-Fetal-Placental Circulation in High-Risk Pregnancy: A Randomized Controlled Trial
Table 4
Measures of uteroplacental circulation between groups.
Arteries
Gestational age
Mean ± SD or count (%)
values
Yoga ()
Control ()
Right uterine artery
Systolic/diastolic ratio
12th wk
3.2 ± 1.4
3.1 ± 1.1
0.17
20th wk
2.3 ± 0.4
2.7 ± 1.1
28th wk
2.0 ± 0.3
2.4 ± 0.7
Pulsatility index
12th wk
1.4 ± 0.5
1.4 ± 0.5
0.07
20th wk
0.8 ± 0.2
1.0 ± 0.5
28th wk
0.7 ± 0.1
0.9 ± 0.4
Resistance index
12th wk
0.65 ± 0.1
0.64 ± 0.1
0.01
20th wk
0.52 ± 0.1
0.58 ± 0.1
28th wk
0.46 ± 0.1
0.55 ± 0.1
Diastolic notch
12th wk
7 (22.6%)
7 (18.4%)
0.67
20th wk
2 (6.1%)
3 (7.9%)
0.76
28th wk
1 (3.6%)
1 (2.9%)
0.87
Left uterine artery
Systolic/diastolic ratio
12th wk
3.5 ± 1.5
3.6 ± 1.6
0.15
20th wk
2.1 ± 0.3
2.6 ± 1.1
28th wk
1.9 ± 0.3
2.3 ± 1.2
Pulsatility index
12th wk
1.5 ± 0.6
1.5 ± 0.8
0.08
20th wk
0.8 ± 0.2
1.0 ± 0.5
28th wk
0.7 ± 0.1
1.1 ± 1.8
Resistance index
12th wk
0.69 ± 0.15
0.66 ± 0.12
0.08
20th wk
0.52 ± 0.06
0.57 ± 0.11
28th wk
0.47 ± 0.07
0.59 ± 0.24
Diastolic notch
12th wk
10 (32.3%)
8 (21.1%)
0.29
20th wk
1 (3.0%)
6 (15.8%)
0.07
28th wk
1 (3.6%)
3 (8.6%)
0.42
Calculated using RM-ANOVA. bCalculated using Chi-Square test. Remarks: right uterine artery RI was significantly improved in the yoga group, while the PI was near significance along with the RI and PI of left uterine artery.
