Randomised controlled effectiveness study (RCT) of isometric exercise (IE) in adults with stage 1 and 2 hypertension...

Area of Science:

• Cardiovascular health
• Exercise physiology
• Public health

Background:

• Hypertension affects over 25% of English adults, with suboptimal treatment rates.
• Current exercise recommendations for hypertension management have low adherence and high dropout rates.
• Isometric exercise (IE) shows promise for lowering blood pressure more efficiently than conventional exercises.

Purpose of the Study:

• To evaluate the effectiveness of a home-based isometric exercise (IE) intervention for reducing blood pressure in adults with uncomplicated hypertension.
• To gather implementation data to support the scalability and cost-effectiveness of the IE intervention.

Main Methods:

• A multi-center, randomized controlled trial (RCT) with an effectiveness-implementation hybrid design.
• 542 adults with Stage 1 or 2 hypertension were randomized to standard care plus IE or standard care alone.
• Data collection included blood pressure, fidelity, adverse events, quality of life, and participant satisfaction over 6-12 months.

Main Results:

• The ISOFITTER study aims to establish the effectiveness of a self-administered, home-based IE intervention.
• Implementation data will inform patient delivery, scalability, and cost-effectiveness.
• Results will demonstrate IE's potential for hypertension management.

Conclusions:

• Lifestyle modifications are crucial for hypertension management, especially when other risk factors are absent.
• There is a need for easily adoptable and evidence-based exercise interventions for long-term hypertension control.
• This study addresses the evidence gap by evaluating a novel, time-efficient exercise approach for hypertension.