Effect of massage on blood pressure in patients with hypertension: A meta-analysis

Hypertension (HTN) is a chronic medical condition that affects 1.13 billion people globally. Successful management of HTN is accomplished through both pharmacological and non-pharmacological interventions. Massage therapy, a widely practiced complementary and alternative medicine therapy that alleviates physical discomfort and promotes overall well-being. The current meta-analysis aims to evaluate the effect of massage on blood pressure in patients with HTN.

Electronic databases, including PubMed, Prospero, Scopus, ClinicalTrials.gov, Embase, and the Cochrane Library, were searched from their inception up to March 2021. All experimental trials that met the (PICO) criteria were included. The primary outcome of the study was blood pressure. A meta-analysis was conducted using a random-effects model to generate a summary of treatment effects, expressed as the effect size (Standardized Mean Difference - SMD), along with a 95% Confidence Interval (CI).

Six studies were included in the review, in which 290 patients participated, 148 were in the experimental group and 142 in the control group. Meta-analysis showed a minimal reduction of systolic blood pressure (SMD: -0.65 mmHg, 95% CI: -4.75, 3.55) and diastolic blood pressure (SMD: -0.68 mmHg, 95% CI: -2.43, 1.06) with considerable heterogeneity (I²> 94%).

The findings demonstrated that massage therapy resulted in a minimal reduction in blood pressure among patients with hypertension. To suggest massage as an effective intervention to reduce blood pressure further randomized control trials are recommended. Additionally, the literature is limited and still emerging, further large prospective studies with long follow-ups are warranted to verify the findings from this meta-analysis.