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ORIGINAL ARTICLE
Year : 2017  |  Volume : 6  |  Issue : 4  |  Page : 50-56

Effect of exercise on left ventricular mass index by echocardiography in mild and moderate hypertension: A meta-analysis


1 Department of Internal Medicine, Division of Cardiovascular Medicine, Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, El Paso, TX 79905, USA
2 Department of Internal Medicine, Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, El Paso, TX 79905, USA
3 Department of Biomedical Sciences, Division of Biostatistics and Epidemiology, Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, El Paso, TX 79905, USA

Correspondence Address:
Dr. Alok Kumar Dwivedi
Department of Biomedical Sciences, Division of Biostatistics and Epidemiology, Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, 5001 El Paso Drive, El Paso, TX 79905
USA
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/rcm.rcm_37_17

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Background: Left ventricular (LV) hypertrophy is considered to be a significant manifestation of increased blood pressure, which is associated with an increased risk of cardiovascular morbidity and mortality. Exercise training is recommended for reducing blood pressure in mild and moderate hypertensive patients. Methods: We conducted a search for interventional studies evaluating the effect of exercise on LV mass index (LVMI) in hypertensive patients. Studies were searched using different databases from 1990 to 2015. The primary end points were change in LVMI, systolic blood pressure (SBP), and diastolic blood pressure (DBP). Of 122 studies, eight studies were found to be eligible for this meta-analysis. Results: The produced effect size was found to be large for LVMI (3.6, 95% confidence interval [CI]: 1.7–5.5) and DBP (2.8, 95% CI: 1.6–3.9) with significant heterogeneity, while moderate (0.56, 95% CI: 0.35–0.77) for SBP without significant heterogeneity. The estimated predictive intervals for LVMI (95% CI: −3.2–10.3) and DBP (95% CI: −1.3–6.8) showed a positive but not significant difference in the intervention and control groups. Conclusion: The study demonstrated a significant reduction in LVMI and DBP in hypertensive patients after exercise training. A moderate reduction in the SBP of these patients was also depicted after exercise. Our study supports the American College of Cardiology/American Heart Association guidelines for regular exercise in hypertension.


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