Aerobic versus isometric handgrip exercise in hypertension: a randomized controlled trial

Area of Science:

• Cardiovascular Medicine
• Exercise Physiology
• Hypertension Research

Background:

• Aerobic dynamic exercise is recommended for hypertension management.
• Isometric exercise is not widely recommended due to limited data.
• This study compares isometric handgrip training with aerobic exercise for blood pressure reduction.

Purpose of the Study:

• To compare the effects of isometric handgrip training and aerobic exercise on blood pressure in hypertensive patients.
• To evaluate the impact of different exercise modalities on hemodynamic parameters.

Main Methods:

• A randomized controlled trial involving 75 hypertensive patients.
• Three groups: isometric handgrip training, sham-handgrip training, and aerobic exercise.
• 12-week intervention with assessments of office BP, 24-h ambulatory BP, arterial compliance, and systemic vascular resistance.

Main Results:

• Aerobic exercise significantly reduced systolic 24-h BP, office SBP, systemic vascular resistance, and small artery elasticity index.
• Isometric handgrip training and sham-handgrip training showed no significant changes in these parameters.
• P-values indicated statistical significance for aerobic exercise effects (P < 0.05).

Conclusions:

• Isometric handgrip training, as per the tested protocol, did not lower blood pressure in hypertensive individuals.
• Aerobic exercise demonstrated significant reductions in both ambulatory and office blood pressure.
• Aerobic exercise is effective for hypertension management, even in an unsupervised setting.