Abstract
The current systematic review and meta-analysis evaluated the effects of High-Intensity Interval Training (HIIT) on blood pressure (BP) in older adults and compared the efficacy of HIIT versus moderate-intensity continuous training (MICT). Search was conducted using the databases at PubMed, Scopus, Cochrane Library and EMBASE, for randomized trials comparing the chronic effects (≥4weeks) of HIIT versus MICT or control group (non-exercise) on BP in older adults (≥60years) with or without hypertension. A total of 10 articles (n=266 participants) were included in this meta-analysis. HIIT were associated with reductions in systolic BP (MD -7.36; 95%CI -11.80 to -2.92; P<0.01; I2=24%) and diastolic BP (MD -5.48; 95%CI -8.71 to -2.25; P<0.01; I2=40%) versus control group. No differences were found between HIIT and MICT in systolic BP (MD -2.09; 95%CI -9.76 to 5.58; P=0.59; I2=0%) and diastolic BP (MD -1.00; 95%CI -6.01 to 4.01; P=0.69; I2=0%). HIIT reduces BP in older adults. Additionally, HIIT and MICT provided comparable reductions on BP in this population.
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