Blood pressure reduction in "borderline" hypertensives following physical training.

One hundred and sixty-five middle-aged, apparently normal men were submitted to a six-month conditioning program. On the basis of a casual blood pressure measurement during the pre-training evaluation, 37 individuals (23%) were classified as "borderline" hypertensive. The remaining subjects (n = 128) were normotensive. At the conclusion of the program both groups exhibited significant reductions in systolic and diastolic blood pressures at rest and after submaximal work. Moreover, the reductions of the resting systolic and diastolic and of the exercise (300 kg.m./min.) systolic blood pressures were significantly greater for the hypertensives.