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High-intensity interval training reduces blood pressure in older adults: A systematic review and meta-analysis
Leandro Carpes1, Rochelle Costa2, Bruna Schaarschmidt3
1Graduate Program in Cardiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Sports and Exercise Training Study Group, Hospital de Clínicas de Porto Alegre, RS, Brazil.
Background/Objectives:
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).
Methods:
Search was conducted using the databases at PubMed, Scopus, Cochrane Library and EMBASE, for randomized trials comparing the chronic effects (≥4 weeks) of HIIT versus MICT or control group (non-exercise) on BP in older adults (≥60 years) with or without hypertension.
Results:
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%).
Conclusion:
HIIT reduces BP in older adults. Additionally, HIIT and MICT provided comparable reductions on BP in this population.
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