scholarly journals Impact of slow breathing on the blood pressure and subarachnoid space width oscillations in humans

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Magdalena K. Nuckowska ◽  
Marcin Gruszecki ◽  
Jacek Kot ◽  
Jacek Wolf ◽  
Wojciech Guminski ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Subarachnoid Space ◽  
Slow Breathing ◽  
Space Width

scholarly journals Coupling between Blood Pressure and Subarachnoid Space Width Oscillations during Slow Breathing

Entropy ◽  
2021 ◽  
Vol 23 (1) ◽  
pp. 113
Author(s):  
Agnieszka Gruszecka ◽  
Magdalena K. Nuckowska ◽  
Monika Waskow ◽  
Jacek Kot ◽  
Pawel J. Winklewski ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Subarachnoid Space ◽  
Brain Hemispheres ◽  
New Findings ◽  
Inspiratory Resistance ◽  
Cardiac Component ◽  
Slow Breathing ◽  
Effective Phase ◽  
Space Width ◽  
The Brain

The precise mechanisms connecting the cardiovascular system and the cerebrospinal fluid (CSF) are not well understood in detail. This paper investigates the couplings between the cardiac and respiratory components, as extracted from blood pressure (BP) signals and oscillations of the subarachnoid space width (SAS), collected during slow ventilation and ventilation against inspiration resistance. The experiment was performed on a group of 20 healthy volunteers (12 females and 8 males; BMI =22.1±3.2 kg/m2; age 25.3±7.9 years). We analysed the recorded signals with a wavelet transform. For the first time, a method based on dynamical Bayesian inference was used to detect the effective phase connectivity and the underlying coupling functions between the SAS and BP signals. There are several new findings. Slow breathing with or without resistance increases the strength of the coupling between the respiratory and cardiac components of both measured signals. We also observed increases in the strength of the coupling between the respiratory component of the BP and the cardiac component of the SAS and vice versa. Slow breathing synchronises the SAS oscillations, between the brain hemispheres. It also diminishes the similarity of the coupling between all analysed pairs of oscillators, while inspiratory resistance partially reverses this phenomenon. BP–SAS and SAS–BP interactions may reflect changes in the overall biomechanical characteristics of the brain.

scholarly journals Acute hypoxia diminishes the relationship between blood pressure and subarachnoid space width oscillations at the human cardiac frequency

PLoS ONE ◽  
2017 ◽  
Vol 12 (2) ◽  
pp. e0172842 ◽  
Author(s):  
Magdalena Wszedybyl-Winklewska ◽  
Jacek Wolf ◽  
Ewa Swierblewska ◽  
Katarzyna Kunicka ◽  
Agnieszka Gruszecka ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Subarachnoid Space ◽  
Acute Hypoxia ◽  
Cardiac Frequency ◽  
The Relationship ◽  
Space Width

scholarly journals Increased inspiratory resistance affects the dynamic relationship between blood pressure changes and subarachnoid space width oscillations

PLoS ONE ◽  
2017 ◽  
Vol 12 (6) ◽  
pp. e0179503 ◽  
Author(s):  
Magdalena Wszedybyl-Winklewska ◽  
Jacek Wolf ◽  
Ewa Swierblewska ◽  
Katarzyna Kunicka ◽  
Kamila Mazur ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Subarachnoid Space ◽  
Dynamic Relationship ◽  
Inspiratory Resistance ◽  
Pressure Changes ◽  
Space Width

scholarly journals Slow Breathing Training Reduces Resting Blood Pressure and the Pressure Responses to Exercise

2015 ◽  
pp. 673-682 ◽  
Author(s):  
C. U. JONES ◽  
B. SANGTHONG ◽  
O. PACHIRAT ◽  
D. A. JONES
Keyword(s):  
Blood Pressure ◽  
Pressor Response ◽  
Autonomic Control ◽  
Handgrip Exercise ◽  
Breathing Training ◽  
Hand Grip ◽  
Pressor Responses ◽  
Resting Blood Pressure ◽  
Slow Breathing ◽  
Inspiratory Load

Slow breathing training reduces resting blood pressure, probably by modifying central autonomic control, but evidence for this is lacking. The pressor response to static handgrip exercise is a measure of autonomic control and the aim of this study was to determine whether slow breathing training modulates the pressor responses to exercise of untrained muscles. Twenty hypertensive patients trained for 8 weeks, 10 with unloaded slow breathing (Unloaded) and 10 breathing against an inspiratory load of 20 cm H2O (Loaded). Ten subjects were untrained controls. Subjects performed a 2 min handgrip pressor test (30 % MVC) pre- and post-training, and blood pressure and heart rate (HR) were measured before the contraction, at the end and following 2 min recovery. Resting systolic (sBP) and HR were reduced as a result of training, as reported previously. After training there was both a smaller pressor response to hand grip exercise and a more rapid recovery of sBP and HR compared to pre-training. There were no changes in the Controls and no differences between the Unloaded and Loaded groups. Combining the two training groups, the sBP response to handgrip exercise after training was reduced by 10 mm Hg (95 % CI: −7, −13) and HR by 5 bpm (95 % CI: −4, −6), all p<0.05. These results are consistent with slow breathing training modifying central mechanisms regulating cardiovascular function.

Device and non-device-guided slow breathing to reduce blood pressure in hypertensive patients: a systematic review protocol. (Preprint)

2021 ◽  
Author(s):  
Kamila Shelry Gonçalves ◽  
Ana Carolina Queiroz Godoy Daniel ◽  
José Luiz Tatagiba Lamas ◽  
Henrique Ceretta Oliveira ◽  
Renata Cristina De Campos Pereira Silveira ◽  
...  
Keyword(s):  
Systematic Review ◽  
Blood Pressure ◽  
Current Evidence ◽  
Controlled Trials ◽  
Cochrane Central Register ◽  
Systematic Review Protocol ◽  
Hypertensive Patients ◽  
Gray Literature ◽  
Review Protocol ◽  
Slow Breathing

UNSTRUCTURED Introduction: Physiotherapy can include both device-guided slow breathing and device-guided slow breathing in the treatment of systemic arterial hypertension. Methods: A systematic search of all published randomized controlled trials on the effects of device-guided and non-device-guided slow breathing on hypertensive patients, without language restriction, will be carried out until January 2020 in nine databases: Pubmed / MEDLINE (Medical Literature Analysis and Retrieval System Online), Latin American and Caribbean Health Sciences Literature (LILACS), EMBASE, Cochrane Central Register of Controlled Trials (CENTRAL), Physiotherapy Evidence Database (PEDro), Cumulative Index to Nursing and Allied Health Literature ( CINAHL), Scopus, Web of Science, Livivo, as well as a search of clinical trial records databases, CT.GOV (Clinical trials.Gov), and bases for the Open Grey gray literature, Gray Literature Report, ProQuest Central (Citation, Abstract or Indexing and Dissertations and Theses). In all of these databases, potentially eligible studies including completed and ongoing ECAs were researched. The quality assessment of the included studies will be conducted using the Cochrane Risk of Bias Tool for Randomized Trials. The overall quality of the evidence for each outcome will be assessed using the Grading of Recommendations, Development and Evaluation (GRADE) system. Discussion: This systematic review will provide a summary of the current evidence on the effects of both device-guided slow breathing and device-guided slow breathing on blood pressure levels. This information can contribute to decision making by health professionals related to the use of these interventions in hypertensive patients. Following the guidelines, this systematic review protocol was registered with the Prospective International Register of Systematic Reviews (PROSPERO) number CRD42020147554.

scholarly journals Graded Blood Pressure Reduction in Hypertensive Outpatients Associated With Use of a Device to Assist With Slow Breathing

2004 ◽  
Vol 6 (10) ◽  
pp. 553-559 ◽  
Author(s):  
William J. Elliott ◽  
Joseph L. Izzo ◽  
William B. White ◽  
Douglas R. Rosing ◽  
Christopher S. Snyder ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Blood Pressure Reduction ◽  
Pressure Reduction ◽  
Slow Breathing

Influence of breathing frequency on the pattern of respiratory sinus arrhythmia and blood pressure: old questions revisited

2010 ◽  
Vol 298 (5) ◽  
pp. H1588-H1599 ◽  
Author(s):  
P. Y. W. Sin ◽  
D. C. Galletly ◽  
Y. C. Tzeng
Keyword(s):  
Blood Pressure ◽  
Respiratory Sinus Arrhythmia ◽  
Pattern Analysis ◽  
Time Interval ◽  
Adrenergic Blockade ◽  
Breathing Frequency ◽  
Sinus Arrhythmia ◽  
Temporal Relationships ◽  
Sympathetic Modulation ◽  
Slow Breathing

Respiratory sinus arrhythmia (RSA) is classically described as a vagally mediated increase and decrease in heart rate concurrent with inspiration and expiration, respectively. However, although breathing frequency is known to alter this temporal relationship, the precise nature of this phase dependency and its relationship to blood pressure remains unclear. In 16 subjects we systematically examined the temporal relationships between respiration, RSA, and blood pressure by graphically portraying cardiac interval (R-R) and systolic blood pressure (SBP) variations as a function of the respiratory cycle (pattern analysis), during incremental stepwise paced breathing. The principal findings were 1) the time interval between R-R maximum and expiration onset remained the same (∼2.5–3.0 s) irrespective of breathing frequency ( P = 0.10), whereas R-R minimum progressively shifted from expiratory onset into midinspiration with slower breathing ( P < 0.0001); 2) there is a clear qualitative distinction between pre- versus postinspiratory cardiac acceleration during slow (0.10 Hz) but not fast (0.20 Hz) breathing; 3) the time interval from inspiration onset to SBP minimum ( P = 0.16) and from expiration onset to SBP maximum ( P = 0.26) remained unchanged across breathing frequencies; 4) SBP maximum and R-R maximum maintained an unchanged temporal alignment of ∼1.1 s irrespective of breathing frequency ( P = 0.84), whereas the alignment between SBP minimum and R-R minimum was inconstant ( P > 0.0001); and 5) β1-adrenergic blockade did not influence the respiration-RSA relationships or distinct RSA patterns observed during slow breathing, suggesting that temporal dependencies associated with alterations in breathing frequency are unrelated to cardiac sympathetic modulation. Collectively, these results illustrate nonlinear respiration-RSA-blood pressure relationships that may yield new insights to the fundamental mechanism of RSA in humans.

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