The effect of different intensities of aerobic exercise on blood pressure remains uncertain.
The goal of this trial was to compare the effect of two different levels of aerobic physical training on 24-hour ambulatory blood pressure.
In this double-blind parallel-group trial, 28 sedentary hypertensive patients (mean diastolic blood pressure of 90 to 104 mmHg) were randomly assigned to 10 weeks of physical training at 20% (Group I) or 60% (Group II) of their maximal workload on a cycle ergometer (mean load of 32 and 85 watts, respectively).
Maximal oxygen consumption was estimated by the time spent on a mechanical braked Monark bicycle (Monark, Sáo Paulo, Brazil).
Indexes of physical fitness were determined by cycle ergometer tests before and after the experimental period.
The principal outcome variable was mean 24-hour ambulatory blood pressure.
Mean 24 hour systolic blood pressure fell from 137.2 ± 14.9 to 135.2 ± 12.7 mmHg in Group I and from 144.4 ± 13.3 to 138.6 ± 12.9 in Group II (mean between group difference of - 2.1 mmHg, P=0.479, adjusted for baseline blood pressure).
Mean diastolic blood pressure fell from 9.21 ± 10.0 to 89.3 ± 7.7 mmHg in Group I and from 93.3 ± 5.8 to 90.6 ± 6.8 mmHg in Group II (mean adjusted difference of - 0.06, P=0.765).
Nighttime blood pressure did not change in either group. (...)
Mots-clés Pascal : Hypertension artérielle, Exercice physique, Pression artérielle, Traitement, Efficacité traitement, Homme, Randomisation, Etude double insu, Brésil, Amérique du Sud, Amérique, Appareil circulatoire pathologie
Mots-clés Pascal anglais : Hypertension, Physical exercise, Arterial pressure, Treatment, Treatment efficiency, Human, Randomization, Double blind study, Brazil, South America, America, Cardiovascular disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0350950
Code Inist : 002B12B05B. Création : 14/12/1999.