Friday, November 8, 2013

Water-based exercise training effects on systemic blood pressure in patients with resistant hypertension: a pilot study



Blood Press Monit. 2013 Dec;18(6):342-5. doi: 10.1097/MBP.0000000000000000.
Guimarães GV, Cruz LG, Tavares AC, Dorea EL, Fernandes-Silva MM, Bocchi EA.
Effects of short-term heated water-based exercise training on systemic blood pressure in patients with resistant hypertension: a pilot study.
Source: Heart Institute (InCor), Clinics Hospital; University Hospital, University of São Paulo Medical School, São Paulo, Brazil.


Abstract

High blood pressure (BP) increases the risk of cardiovascular diseases, and its control is a clinical challenge.


Regular exercise lowers BP in patients with mild-to-moderate hypertension.
No data are available on the effects of heated water-based exercise in hypertensive patients.
Our objective was to evaluate the effects of heated water-based exercise on BP in patients with resistant hypertension.


We tested the effects of 60-min heated water-based exercise training three times per week in 16 patients with resistant hypertension (age 55±6 years).


The protocol included walking and callisthenic exercises.


All patients underwent 24-h ambulatory blood pressure monitoring (ABPM) before and after a 2-week exercise program in a heated pool.


Systolic office BP was reduced from 162 to 144 mmHg (P<0.004) after heated-water training.
After the heated-water exercise training during 24-h ABPM, systolic BP decreased from 135 to 123 mmHg (P=0.02), diastolic BP decreased from 83 to 74 mmHg (P=0.001), daytime systolic BP decreased from 141 to 125 mmHg (P=0.02), diastolic BP decreased from 87 to 77 mmHg (P=0.009), night-time systolic BP decreased from 128 to 118 mmHg (P=0.06), and diastolic BP decreased from 77 to 69 mmHg (P=0.01).


In addition, BP cardiovascular load was reduced significantly during the 24-h daytime and night-time period after the heated water-based exercise.


Heated water-based exercise reduced office BP and 24-h daytime and night-time ABPM levels.
These effects suggest that heated water-based exercise may have a potential as a new therapeutic approach to resistant hypertensive patients.

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