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Updated: Aug 30, 2026
Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns
Published on: September 16, 2019
Effect of deep breathing test on finger blood pressure
Kersti Jagomägi1, Rein Raamat, Jaak Talts
1Institute of Physiology, University of Tartu, 18 Ulikooli Street, 51014 Tartu, Estonia. kersti@ut.ee
Background:
The deep breathing test (DB) is a simple method to measure heart rate variability. However, in most studies the amplitude of blood pressure oscillations has not been considered and little is known about the influence of the deep breathing test on the blood pressure level.
Design:
The aim of this study is to investigate the effect of DB on finger blood pressure (FBP).
Methods:
Continuous beat-to-beat FBP was recorded by the volume clamp method (Portapres model 2 monitor).
Results:
Thirteen volunteers were studied before, during and after DB at a fixed rate of six breaths/min. After DB, systolic blood pressure (SBP), diastolic blood pressure (DBP) and mean blood pressure (MBP) were lower than before DB by 9.1, 4.3 and 5.9 mmHg, respectively. There was no significant correlation between the reduction in the BP level and the amplitudes of induced oscillations in blood pressure and heart rate during the deep breathing test.
Conclusions:
Deep breathing might be used to reduce blood pressure.
Related Concept Videos
01:23Assessment of blood pressure in brachial artery(two-step method)
01:21Sites for measuring blood pressure
The Brachial Artery: Primary Site for Blood Pressure Measurement
01:17Measurement of Blood Pressure
01:28Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
01:15Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:
01:29Assessment of Ventilation II: Respiratory Depth and Rhythm
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement: