Characteristic Study ID	Measurement period			Study population	Intervention group	Control group	Overall effect	Comments
Angelopoulos 2009	Baseline			646 boys and girls	120	116	NS	BP was measured in the right arm with the subject seated and quiet after a 5‐min rest, using a validated automated sphygmomanometer (Omron M5i Blood Pressure Monitor)
	End of intervention (12 months)				119	119	P = 0.016
Bayne‐Smith 2004	Baseline			442 girls	111	111	‐	Measured after 5 to 15 min of rest in a seated position by the auscultatory method from the right arm at heart level. The second of 2 measurements was used.
	End of intervention				105	108	P < 0.05
Burke 1998	Standard PE program	Boys	Baseline	720 boys and girls	NA	NA	‐	BP measured using Dinamap. An initial measurement was taken and after a 5‐min rest period in the sitting position, 3 further measurements were taken at 1‐min intervals. The mean of the latter 3 measurements was used. No primary data provided in text. Only overall change in systolic BP displayed in graph form. No significant change noted over intervention period of 18 weeks
			End of intervention		NA	NA	NS
		Girls	Baseline		NA	NA	‐
			End of intervention		NA	NA	NS
	Enriched PE program	Boys	Baseline		NA	NA	‐
			End of intervention		NA	NA	NS
		Girls	Baseline		NA	NA	‐
			End of intervention		NA	NA	NS
Bush 1989	Baseline			431 boys and girls	104	103	NS	3 resting BP measurements were taken with a standard mercury sphygmomanometer read to the nearest mm, with the child seated. A mean of the 2nd and 3rd readings were used
	During intervention (year 1)				102	102	P = 0.517
	During intervention (year 2)				103	107	P < 0.001
	During intervention (year 3)				111	114	P < 0.004
	End of intervention (year 4)				116	114	P = 0.393
Ewart 1998	Baseline			88 adolescent girls	120	120		BP was measured after 15 min in a sitting position. The average of 6 readings was used to assess baseline resting pressure. Same procedure was used at follow‐up Small sample size. Results generalizable to high‐risk African‐American adolescent girls
	End of intervention				114	116	P < 0.05
Kriemler 2010	Baseline			502 boys and girls	104	103	NA	BP was assessed after a rest period of 5 min in the right arm based on recommendations of the American Heart Association. An automated oscillograph was used in order to reduce interobserver variability. BP was measured 5 times and the mean of the 3 measurements with the smallest variation was taken
	End of intervention				101	102	P = 0.88 0 (95% CI ‐0.3 to 0.2)
Luepker 1996	Baseline			4019 boys and girls	105	105	P = 0.33	5 recordings (1 min apart) were obtained after a 5‐min rest period using the Dinamap automatic BP device. The mean of the last 3 readings was used
	End of intervention (year 3)				114	114	P = 0.71
Martinez 2008	Boys	Baseline		1044 boys and girls	106	110	P = 0.001	After a 5‐min rest, 3 BP readings were taken at 2‐min intervals. BP was obtained with an OMRON M5‐I automatic sphygmomanometer using 3 cuffs sized for arm circumference. The mean of the 3 BP readings was used in the analyses
		End of intervention (9 months)			105	106	P = 0.22 1 (95% CI ‐0.6 to 2.7)
	Girls	Baseline			104	108	P = 0.08
		End of intervention (9 months)			102	103	P = 0.96 0.1 (95% CI ‐1.7 to 1.8)
McManus 2008	Intervention 1	Baseline		193 boys and girls	95	94	‐	Systolic BP was measured manually using a pediatric cuff after 15 min of supine rest
		End of intervention (6 months)			102	101	NS
	Intervention 2	Baseline			101	94	‐
		End of intervention (6 months)			105	101	NS
Reed 2008	Baseline			514 boys and girls	105	104	NS	Duplicate measurements were taken on the left arm using an automatedsphygmomanometer and an appropriately sized cuff after 5 to 10 min rest in a supine position The lowest systolic and diastolic BPs (mm Hg) were recorded
	End of intervention				102	108	P = 0.05
Simon 2004	Baseline			954 adolescent males and females	109	107	‐	Systolic BP was measured on seated children, after a 5‐min rest, using a fully automatic BP monitor and an adapted cuff size
	End of intervention (year 4)				115	114	P = 0.66 ‐0.4 (95% CI ‐2.3 to 1.4)
Stephens 1998	Baseline			90 boys and girls	98	100	‐
	End of intervention				96	97	NS
Walter 1988	Westchester (whole sample)	Baseline		3388 boys and girls	102	106	NA	BP was measured in the seated position using the right arm using a Baum mercury sphygmomanometer three times. The mean of the 3 measurements was used.
		End of intervention			103	107	NS
	Bronx	Baseline			105	104	NA
		End of intervention			106	105	NS
Walther 2009	Baseline			182 boys and girls	129	128	NS	‐
	End of intervention (year 1)				138	139	P = 0.232 ‐2 (95% CI ‐5 to 1)
Wang 2008	Baseline			316 boys and girls	110	110	NS	The biological measurements were made in a mobile laboratory that was brought to the school sites. Systolic BP was measured with a Dinamap. Subjects sat quietly for 5 min, 5 measures were taken at 1‐min intervals, and the mean of the last 3 measurements was used
	End of intervention				106	108	P = 0.15 ‐2 (95% CI ‐4 to 1)
Young 2006	Baseline			210 adolescent girls	109	110	‐	‐
	End of intervention (1 year)				108	107	NS P = 0.06
BP: blood pressure; CI: confidence interval; NA: not acknowledged; NS: not significant; PE: physical education.