MACIEL, Bruno Diego Rodrigues.; http://lattes.cnpq.br/4945837903929617; http://lattes.cnpq.br/8135681257962146; MACIEL, Bruno Diego Rodrigues.; FEITOSA, Virgínia Soares
Résumé:
Maternal hemodynamic responses (heart rate, systolic and diastolic blood
pressure) were compared during two types of moderate-intensity physical
exercise.A randomized clinical trial compared120 pregnant women performing
physical exercise on a treadmill (n=64) or stationary bicycle (n=56). In 44of these
women (n=23 treadmill;n=21 bicycle), blood pressure was monitored for 24 hours
following exercise. Repeated-measures analysis compared maternal heart rate,
systolic and diastolic blood pressure before, during and in the 24 hours following
exercise in both groups.Maternal heart rate increased significantly (p<0.001) with
both types of exercise (from 84 at rest to 112 bpm on the treadmill and from 87 at
rest to 107 bpm on the bicycle),without exceeding the limit of 140 bpm. Systolic
pressure increased from 110 at rest to118 mmHg on the bicycle (p=0.06) and from
112 at rest to120 mmHg on the treadmill(p=0.02). Systolic pressure dropped
steadily following exercise, reaching its lowest level (104 mmHg) after 14 hours,
increasing thereafter and returning to pre-exercise levels by the 19th hour.
Diastolic pressure increased during exercise irrespective of the type of exercise
(p=0.27),from 70 at rest to75 mmHg on the bicycle(p=0.39) and from 70 at rest to
76 mmHg on the treadmill(p=0.18), with the lowest level (59 mmHg)being at the
13th hour. A slight increase in blood pressure levels was found during exercise;
however, this was not clinically significant and was followed by a substantial
hypotensive effect that lasted around 19 hours.