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 4

Diastolic blood pressure subgroup analysis results.

Characteristic of research	Subgroup	Sample	MD	95% CI		I^2/%	Heterogeneity
Hypertension grading	Hypertension	15	−5.556	−8.561, −2.552		94.7
	Hypertension 1	3	−1.713	−5.164, 1.739		79.7
	Hypertension 1 and 2	11	−5.949	−7.803, −4.095		62.3
	Sum	29	−5.273	−7.122, −3.424		91.3
Sample size	≤50	8	−9.189	−12.864, −5.514		84.4
	51∼99	17	−3.800	−6.227, −1.373		92.5
	≥100	4	−4.241	−7.129, −1.291		80.6
	Sum	29	−5.273	−7.122, −3.424		91.3
Study quality (score)	6	8	−5.815	−11.061, −0.570		95.2
	7	12	−6.040	−9.000, −3.080		90.5
	8	7	−5.056	−7.159, −2.953		75.5
	9	2	−0.653	−4.470, 3.163		74.9
	Sum	29	−5.273	−7.122, −3.424		91.3
Frequency (weekly)①	＜3	2	−7.813	−18.396, −2.769		95.8
	3∼5	16	−4.997	−7.667, −2.326		91.8
	＞5	8	−3.542	−5.985, −1.099		79.9
	Sum	26	−4.790	−6.635, −2.946		90.1
Time (min)②	＜30	1	−4.3	−7.544, −1.056
	30∼45	10	−4.673	−7.288, −2.057		89.9
	46∼60	13	−5.885	−9.344, −2.425		93.2
	＞60	3	−3.665	−6.097, −1.223		32.4
	Sum	27	−5.002	−6.832, −3.171		90.4
Duration (weeks)	≤8	4	−4.315	−14.197, −5.566		95.9
	9∼12	12	−4.445	−6.804, −2.086		88.6
	13∼16	3	−4.809	−8.243, −1.375		51.4
	＞16	10	−6.735	−9.410, −4.061		86.1
	Sum	29	−5.273	−7.122, −3.424		91.3
Exercise intensity (heart rate)	Y	12	−5.959	−8.265, −3.654		74.9
	N	17	−4.834	−7.321, −2.347		93.9
	Sum	30	−5.273	−7.122, −3.424		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.