The Effect of Mind-Body Exercise on Blood Pressure in Middle-Aged and Elderly Patients with Hypertension: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

Table 3

Systolic blood pressure subgroup analysis results.

Characteristic of research	Subgroup	Sample	MD	95% CI		I^2 (%)	Heterogeneity
Hypertension grading	Hypertension	16	−10.232	−14.566, −5.898		94.3
	Hypertension 1	3	−3.94	−9.686, 1.806		91.0
	Hypertension 1 and 2	11	−9.725	−12.050, −7.401		56.3
	Sum	30	−9.487	−12.072, −6.901		91.3
Sample size	≤50	8	−11.924	−15.498, −8.351		75.3
	51∼99	18	−8.737	−12.717, −4.758		93.9
	≥100	4	−7.69	−12.309, −3.071		84.6
	Sum	30	−9.487	−12.072, −6.901		91.3
Study quality (score)	6	9	−11.302	−16.670, −5.934		92.2
	7	12	−8.873	−12.441, −5.304		86.6
	8	7	−10.360	−15.334, −5.387		92.2
	9	2	−0.587	−9.897, 8.722		89.2
	Sum	30	−9.487	−12.072, −6.901		91.3
Frequency (Weekly)①	＜3	2	−9.548	−18.446, −0.650		82.4
	3∼5	16	−9.086	−12.570, −5.602		90.3
	＞5	9	−7.39	−10.936, −3.843		84.8
	Sum	27	−8.588	−10.972, −6.203		88.1
Time (min)②	＜30	1	−9.5	−14.468, −4.532
	30∼45	11	−7.614	−11.126, −4.102		89.8
	46∼60	13	−10.59	−15.590, −5.915		91.2
	＞60	3	−8.907	−11.091, −6.723		0.0
	Sum	28	−9.066	−11.491, −6.640		89.1
Duration (Weeks)	≤8	5	−8.109	−13.454, −2.763		63.7
	9∼12	12	−8.253	−12.483, −4.024		93.9
	13∼16	3	−11.898	−19.750, −4.047		80.7
	＞16	10	−10.814	−14.858, −6.771		90.1
	Sum	30	−9.487	−12.072, −6.901		91.3
Exercise intensity (heart rate)	Y	12	−11.839	−17.277, −6.400		92.1
	N	18	−8.201	−11.112, −5.290		90.8
	Sum	30	−9.487	−12.072, −6.901		91.3

① Three sample data have not been disclosed; ② Two sample data did not explain; Y: activity intensity was registered; N: unregistered activity intensity.