Table 3. Factors affecting outcomes.

BP = blood pressure; SBP = systolic blood pressure; SST = serial subtraction; IHGT = isometric handgrip task; DBP = diastolic blood pressure; BMI = body mass index; ABP = arterial blood pressure; HRR = heart rate recovery

Study	Factors affecting outcomes
Zou et al. [13]	Adherence to the trial protocol, satisfaction with the intervention
Sarkkinen et al. [14]	Reduction in sodium intake, use of Smart Salt
Zhao et al. [15]	Use of low-sodium and high-potassium salt substitute, length of the intervention
Hansen et al. [16]	Type and intensity of exercise, duration of the intervention
Badrov et al. [17]	Pretraining SBP reactivity to the SST and IHGT was correlated with the decrease in SBP post-IHG training
Edwards et al. [19]	Change in HRR significantly predicted BP post-intervention when controlling for pre-BP, age, gender, and BMI
Stewart et al. [20]	Body composition improvements explained 8% of the SBP reduction and 17% of the DBP reduction
Elmer et al. [21]	Both behavioral interventions statistically significantly reduced weight, fat intake, and sodium intake; the odds ratios for hypertension at 18 months were 0.83 (95% CI = 0.67 to 1.04) for the established group and 0.77 (95% CI = 0.62 to 0.97) for the established plus DASH group
Burke et al. [22]	The lifestyle program resulted in a greater decrease in mean 24-hour ABP compared to controls, and 41% in the control group and 43% in the program group maintained the drug withdrawal status; the intervention was more effective among those who were not on medication at baseline, had higher BMI, higher baseline ABP, or were more adherent to the program