Aerobic exercise and normotensive adults: a meta-analysis

Area of Science:

• Cardiology
• Exercise Physiology
• Preventive Medicine

Background:

• Elevated blood pressure is a significant risk factor for cardiovascular disease.
• Normotensive adults may still benefit from lifestyle interventions to maintain healthy blood pressure levels.
• Aerobic exercise is widely recommended for cardiovascular health.

Purpose of the Study:

• To meta-analytically examine the impact of aerobic exercise on resting systolic and diastolic blood pressure in normotensive adults.
• To quantify the magnitude of blood pressure reduction attributable to aerobic exercise.
• To analyze findings across different study designs.

Main Methods:

• Meta-analysis of 35 English-language clinical training studies published between 1963 and 1992.
• Inclusion criteria focused on studies involving normotensive adults and reporting resting blood pressure.
• Data synthesized from 1,076 subjects (800 in exercise groups, 276 in control groups).

Main Results:

• Statistically significant reductions in both systolic (SYS) and diastolic (DIA) blood pressure were observed post-exercise.
• Overall mean reduction: SYS -4.4 mm Hg, DIA -3.2 mm Hg.
• Reductions were consistent across randomized controlled trials, controlled trials, and no-control studies, though magnitudes varied slightly.

Conclusions:

• Aerobic exercise is associated with small but significant reductions in resting blood pressure among normotensive adults.
• These findings support the inclusion of aerobic exercise in strategies for maintaining cardiovascular health.
• The meta-analysis provides quantitative evidence for the blood pressure-lowering effects of aerobic training.