Regular slow-breathing exercise effects on blood pressure and breathing patterns at rest

Area of Science:

• Cardiovascular Physiology
• Respiratory Medicine
• Behavioral Medicine

Background:

• Previous research indicates device-guided slow-breathing (DGB) may reduce resting blood pressure (BP) in hypertensive individuals.
• Hypertension management often involves lifestyle modifications, including breathing exercises.

Purpose of the Study:

• To evaluate the impact of daily DGB practice on 24-hour BP and breathing patterns in natural environments.
• To assess changes in BP and breathing patterns during clinic rest following DGB intervention.
• To investigate the short-term effects of DGB on autonomic mechanisms influencing BP.

Main Methods:

• Forty participants with pre-hypertension or stage 1 hypertension were enrolled.
• Participants engaged in daily 15-minute sessions of either DGB or a control (CTL) breathing activity for four weeks.
• Ambulatory BP monitoring and clinic BP measurements were conducted, alongside breathing pattern analysis.

Main Results:

• DGB intervention significantly decreased clinic resting BP and resting breathing rate.
• A reduction in mid-day ambulatory systolic BP was observed in women within the DGB group.
• Increased resting tidal volume was noted in the DGB group, while 24-hour BP and overnight breathing patterns remained unchanged.

Conclusions:

• Short-term DGB practice can modulate autonomic mechanisms, leading to reduced resting BP and breathing rate.
• The study found no evidence that regular DGB affects long-term BP regulation factors.
• Further research with prolonged DGB interventions is necessary to determine its efficacy in lowering 24-hour BP.