Cardiorespiratory Dynamics in the Brain: Review on the Significance of Cardiovascular and Respiratory Correlates in functional MRI signal

NeuroImage, Journal Year: 2025, Volume and Issue: 306, P. 121000 - 121000

Published: Jan. 1, 2025

Cardiorespiratory signals have long been treated as "noise" in functional magnetic resonance imaging (fMRI) research, with the goal of minimizing their impact to isolate neural activity. However, there is a growing recognition that these signals, once seen confounding variables, provide valuable insights into brain function and overall health. This shift reflects dynamic interaction between cardiovascular, respiratory, systems, which together support In this review, we explore role cardiorespiratory dynamics-such heart rate variability (HRV), respiratory sinus arrhythmia (RSA), changes blood flow, oxygenation, carbon dioxide levels-embedded within fMRI signals. These physiological reflect critical aspects neurovascular coupling are influenced by factors such stress, breathing patterns, age-related changes. We also discuss complexities distinguishing from neuronal activity data, given significant contribution signal interactions cerebrospinal fluid (CSF). Recognizing influence dynamics crucial for improving interpretation shedding light on heart-brain respiratory-brain connections, enhancing our understanding circulation, oxygen delivery, waste elimination brain.

Language: Английский

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Peculiarities of cardio-respiratory relationships in qualified athletes with different types of heart rhythm regulation according to respiratory maneuver data

Frontiers in Sports and Active Living, Journal Year: 2025, Volume and Issue: 6

Published: Jan. 13, 2025

Our goal was to determine the differences in changes cardiovascular and cardiorespiratory interaction indicators during a respiratory maneuver with change breathing rate athletes different types of heart regulation. The results study 183 healthy men aged 21.2 ± 2.3 years, who were systematically involved various sports, analyzed. According analysis HRV spontaneous breathing, divided into 4 groups taking account type regulation (HRR). Group 1 (with I) consisted 53 people, group 2 II)-29 3 III)-85 IV)-16 people. methodology for studying system included combined measurements activity sitting position using spiroarteriocardiorhythmograph. duration 6 min. controlled frequency 15 per minute (CR6 CR15), it is shown that pronounced predominance parasympathetic influences (type IV) conditions excessive control moderate hyperventilation, arterial baroreflex sensitivity (δBRLF δBRHF) are noted comparison other HRR. Athletes IV at CR6 δBRLF significantly differ from III (p = 0.026) do not II 0.141). In δBRHF 0.038 p 0.043)-from I II. It sympathetic (types II), reactivity BRS response hyperventilation (CR15) lower. Changes Hildebrandt index volume synchronization additionally differentiate HRR associated influences. use current showed informativeness differentiation states functional overstrain.

Language: Английский

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Cardiorespiratory synchronization under the influence of strength endurance training

Physical rehabilitation and recreational health technologies, Journal Year: 2024, Volume and Issue: 9(1), P. 25 - 35

Published: Jan. 30, 2024

Purpose: to determine changes in the parameters of cardiorespiratory relationships during maneuver with a change breathing rate after 4-month cycle training aimed at development strength endurance. Material & Methods: results spiroarteriocardiorhythmographic study 22 healthy men aged 20.7±2.3 years, who for 4 months 2 times week 90 minutes, were analyzed (a total 30 classes held) engaged The indicators heart (min–1), respiratory cardiac output (dm3×min–1), minute lung ventilation (L×min–1) and their derivatives – Hildebrandt index (HR/RR) volume synchronization (CO/V), which obtained spontaneous respiration controlled 0.1 Hz 0.25 Hz. Results: it was shown that endurance led probable decrease from 71.4 (63.9; 77.5) 64.3 (60.8; 68.3), p=0.002, 14.1 (12, 7; 16.8) 13.8 (10.7; 15.3), p= 0.020 8.19 (6.24; 8.86) 6.40 (3.73; 7.74) ), p=0.004 breathing, as well significant increase volumetric index. (dm3×L–1) 0.597 (0.490; 0.832) 0.725 (0.564; 1.148), p=0.008, 0.327 (0.382; 0.529) 0.532 (0.441; 0.723), p=0.012 0,245 (0,339; 0,455) 0,481 (0,373; 0,616), р=0,003 against background 0,1 11.14 (10.43; 12.49) 10.18 (9.54; 11.00), p=0.001, 5.33 (4.68; 5.85) 4.46 (4.13; 4, 78), p=0.000. Conclusions: an economization cardiovascular systems function response sympathoadrenal activation hyperventilation.

Language: Английский

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Desarrollo y evaluación de mascarillas de oxigenación en 3D diseñadas para caninos en recuperación post quirúrgica

MQRInvestigar, Journal Year: 2024, Volume and Issue: 8(1), P. 3814 - 3839

Published: March 6, 2024

En la medicina veterinaria, el desarrollo de mascarillas oxigenación en 3D para caninos recuperación postquirúrgica representa un avance significativo, pues proporcionan soporte respiratorio óptimo y mejoran confort del paciente durante proceso recuperación. El objetivo principal esta investigación fue diseñar, desarrollar evaluar diseñadas postquirúrgica. La metodología utilizada carácter experimental transversal, con enfoque cuantitativo, alcance correlacional tipo estudio analítico; su efecto se utilizó una impresora resina líquida elaborar las mascarillas, basadas especificaciones anatómicas caninas probó eficacia 30 pacientes sometidos a cirugía ovariohisterectomía (OVH). demostró que efectivo significativamente los Se observó mejora notable anestésica adecuada tisular utilizaron mascarilla. Además, destacaron beneficios estabilidad cardiaca saturación oxígeno dichos pacientes, demostrando e importancia administrar serán procedimiento quirúrgico.

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