Original Papers: PDF OnlyFailure of Weight Reduction to Reduce Mildly Elevated Blood Pressure: A Randomized TrialHaynes, R Brian; Harper, Andrew C.; Costley, Samuel R.; Johnston, Mary; Logan, Alexander G.*; Flanagan, Patrick T.*; Sackett, David L.Author Information From McMaster University Faculty of Health Sciences, Hamilton, Ontario, Canada *From the University of Toronto Faculty of Medicine, Toronto, Ontario Journal of Hypertension: October 1984 - Volume 2 - Issue 5 - p 535-539 Buy Abstract To determine the value of weight reduction on blood pressure, we randomly allocated 60 untreated, mildly hypertensive, obese individuals to a no-treatment control group or to a behaviourly-oriented weight loss ('diet') programme administered by professional dietitians. Behavioural techniques included self-monitoring, shaping, reinforcement and modelling. Subjects were reassessed after six months by an observer who was unaware of their study group Fifty-four subjects (90%) completed the study. Diet subjects lost 4.1 kg and controls only 0.8 kg (P=0.018). However, neither systolic nor diastolic blood pressures differed. The chance that we missed a clinically important diastolic difference of 6 mmHg (our pre-study target) is less than 1%. We conclude that our weight loss programme was successful in reducing weight but that weight loss is not useful in lowering blood pressure in mild, otherwise untreated hypertensives © Lippincott-Raven Publishers.