Results 21 to 30 of about 2,866,241 (276)

Synchronization-Dissipation in the Cardiorespiratory System. [PDF]

Adv Sci (Weinh)
By modeling central nervous coupling and viscoelastic interactions in the cardiorespiratory system we show that synchronization produces a 10% gain in cardiac efficiency in humans. It is surmised that respiratory sinus arrhythmia improves cardiac pumping efficiency by reducing dynamic stress and power dissipation in the pulmonary vasculature.
Border JR, Nogaret A, Lefevre A, Jain V.
europepmc   +2 more sources

Fibromyalgia and Chronic Fatigue Syndromes: A systematic review and meta-analysis of cardiorespiratory fitness and neuromuscular function compared with healthy individuals.

PLoS ONE, 2022
ObjectiveTo determine cardiorespiratory fitness and neuromuscular function of people with CFS and FMS compared to healthy individuals.DesignSystematic review and meta-analysis.Data sourcesPubMed, Medline, CINAHL, AMED, Cochrane Central Register of ...
Fabio Zambolin, Pablo Duro-Ocana, Azmy Faisal, Liam Bagley, William J Gregory, Arwel W Jones, Jamie S McPhee   +6 more
doaj   +2 more sources

Changes in Forcecardiography Heartbeat Morphology Induced by Cardio-Respiratory Interactions

Sensors, 2022
The cardiac function is influenced by respiration. In particular, various parameters such as cardiac time intervals and the stroke volume are modulated by respiratory activity.
Jessica Centracchio, Daniele Esposito, Gaetano D. Gargiulo, Emilio Andreozzi   +3 more
doaj   +1 more source

On the Different Abilities of Cross-Sample Entropy and K-Nearest-Neighbor Cross-Unpredictability in Assessing Dynamic Cardiorespiratory and Cerebrovascular Interactions

Entropy, 2023
Nonlinear markers of coupling strength are often utilized to typify cardiorespiratory and cerebrovascular regulations. The computation of these indices requires techniques describing nonlinear interactions between respiration (R) and heart period (HP ...
Alberto Porta, Vlasta Bari, Francesca Gelpi, Beatrice Cairo, Beatrice De Maria, Davide Tonon, Gianluca Rossato, Luca Faes   +7 more
doaj   +1 more source

Inference of a Nonlinear Stochastic Model of the Cardiorespiratory Interaction [PDF]

Physical Review Letters, 2005
5 pages, 4 figures, 1 table. accepted for publication in Phys. Rev.
Stefanovska, Aneta, Luchinsky, D. G., McClintock, Peter V. E., Smelyanskiy, V. N.   +3 more
openaire   +3 more sources

Hemodynamic and cardiorespiratory responses to submaximal and maximal exercise in adults with Down syndrome

Frontiers in Physiology, 2022
Introduction: The genetic disorder causing Down syndrome (DS) affects the cardiorespiratory and hemodynamic parameters. When exercising, sufficient blood flow is necessary for active muscles.
Guillermo R. Oviedo, Guillermo R. Oviedo, María Carbó-Carreté, María Carbó-Carreté, Myriam Guerra-Balic, Nauris Tamulevicius, Laura Esquius, Joan Guàrdia-Olmos, Joan Guàrdia-Olmos, Joan Guàrdia-Olmos, Casimiro Javierre   +10 more
doaj   +1 more source

A Transfer Entropy Approach for the Assessment of the Impact of Inspiratory Muscle Training on the Cardiorespiratory Coupling of Amateur Cyclists

Frontiers in Physiology, 2020
The strength of cardiorespiratory interactions diminishes with age. Physical exercise can reduce the rate of this trend. Inspiratory muscle training (IMT) is a technique capable of improving cardiorespiratory interactions. This study evaluates the effect
Raphael Martins de Abreu, Aparecida Maria Catai, Beatrice Cairo, Patricia Rehder-Santos, Claudio Donisete da Silva, Étore De Favari Signini, Camila Akemi Sakaguchi, Alberto Porta, Alberto Porta   +8 more
doaj   +1 more source

Cardiorespiratory Fitness May Protect Memory for Poorer Sleepers

Frontiers in Psychology, 2022
ObjectivesPhysical activity has been shown to protect executive functions against the deleterious effects of poorer sleep among older adults (OA); however, it is unknown whether memory is protected too, and if this relationship differs by age.
Tara Kuhn, Jennifer Heisz
doaj   +1 more source

Does Cardiorespiratory Fitness Buffer Stress Reactivity and Stress Recovery in Police Officers? A Real-Life Study

Frontiers in Psychiatry, 2020
High levels of cardiorespiratory fitness have the potential to buffer against physical and mental health impairments, which can result from exposure to occupational stress.
René Schilling, Christian Herrmann, Sebastian Ludyga, Flora Colledge, Serge Brand, Serge Brand, Serge Brand, Serge Brand, Serge Brand, Uwe Pühse, Markus Gerber   +10 more
doaj   +1 more source

Information Decomposition in Multivariate Systems: Definitions, Implementation and Application to Cardiovascular Networks

Entropy, 2016
The continuously growing framework of information dynamics encompasses a set of tools, rooted in information theory and statistical physics, which allow to quantify different aspects of the statistical structure of multivariate processes reflecting the ...
Luca Faes, Alberto Porta, Giandomenico Nollo, Michal Javorka   +3 more
doaj   +1 more source