For most comparisons , the credibility of evidence was rated very low to moderate , with the exception for the DASH vs. the low-fat dietary approach for which the quality of evidence was rated high .
Conclusion : The present network meta- analysis suggests that the DASH dietary approach might be the most effective dietary measure to reduce blood pressure among hypertensive and pre-hypertensive patients based on high quality evidence
ABSTRACT Background : Pairwise meta-analyses have shown beneficial effects of individual dietary approaches on blood pressure but their comparative effects have not been established .
Objective : Therefore we performed a systematic review of different dietary intervention trials and estimated the aggregate blood pressure effects through network meta- analysis including hypertensive and pre-hypertensive patients .
Diet and exercise intervention have favourable effects on blood pressure in mild hypertensives: the Oslo Diet and Exercise Study (ODES).
The purpose of this study was to investigate the effect of 1-year diet intervention , exercise intervention and both combined on blood pressure ( BP ) in normotensives and mild hypertensives . Two hundred and nineteen sedentary middle aged men and women with slightly deranged coronary heart disease ( CHD ) risk factors were r and omised to a control , a diet , an exercise and a diet + exercise group . Based on baseline diastolic BP , participants were divided into tertiles , giving baseline average BP of 141.4/96.7 in tertile 1 , 130.7/87.6 in tertile 2 and 121.9/79.0 in tertile 3 . The 1-year net-difference in BP between the intervention groups and the control group decreased across the tertiles ; in tertile 1 being -11.2/-6.7 ( p < 0.05 ) , -11.3/-6.7 ( p < 0.05 for systolic BP only ) and -7.0/-5.1 ( NS ) in the combined , diet and exercise group respectively . Triglycerides , HDL cholesterol , and insulin variables were significantly and favourably changed , the changes being most marked in the combined group . The results show that diet and diet + exercise are about equally effective in reducing BP , and the effects may be dependent on the baseline level . Within the upper tertile of baseline BP , the decline in BP in the combined intervention and the diet group are almost comparable to those obtained with drug treatment . In addition , other important CHD risk factors were all changed in a beneficial direction
For most comparisons , the credibility of evidence was rated very low to moderate , with the exception for the DASH vs. the low-fat dietary approach for which the quality of evidence was rated high .
Conclusion : The present network meta- analysis suggests that the DASH dietary approach might be the most effective dietary measure to reduce blood pressure among hypertensive and pre-hypertensive patients based on high quality evidence
ABSTRACT Background : Pairwise meta-analyses have shown beneficial effects of individual dietary approaches on blood pressure but their comparative effects have not been established .
Objective : Therefore we performed a systematic review of different dietary intervention trials and estimated the aggregate blood pressure effects through network meta- analysis including hypertensive and pre-hypertensive patients .