Detection of respiratory frequency rhythm in human alpha phase shifts: topographic distributions in wake and drowsy states

Frontiers in Physiology, Journal Year: 2025, Volume and Issue: 15

Published: Jan. 6, 2025

The relationship between brain activity and respiration is recently attracting increasing attention, despite being studied for a long time. Respiratory modulation was evidenced in both single-cell field potentials. Among EEG intracranial measurements, the effect of prevailingly on amplitude/power all frequency bands. Since phases oscillations received less we applied our previously published carrier (CF) mathematical model human alpha group 10 young healthy participants wake drowsy states, using 14-channel average reference montage. approach allows more precise calculation CF phase shifts (CFPS) than any individual Fourier component, by 2-s moving window, validated new method studied, first time, temporal waveforms CFPS(t) their oscillatory content through FFT (CFPS(t)). Although not appearing equally channel pairs every subject, clear peak respiratory region, 0.21-0.26 Hz, observed (max at 0.22 Hz). When five with most prominent averaged amplitudes Hz were plotted topographic distributions changed significantly-from longitudinal, connecting frontal posterior channels state to topographically split two separate regions-frontal state. In addition, state, 0.22-Hz decreased pairs, while statistically significant reduction obtained 20/91 (22%) pairs. These results potentially evidence, shifts, as well impact wakeful consciousness oscillations.

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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Heart rate dynamics and asymmetry during sympathetic activity stimulation and post-stimulation recovery in ski mountaineers—a pilot exploratory study

Frontiers in Sports and Active Living, Journal Year: 2024, Volume and Issue: 6

Published: Feb. 29, 2024

There is a lack of studies on non-linear heart rate (HR) variability in athletes. We aimed to assess the usefulness short-term HR dynamics and asymmetry parameters evaluate neural modulation cardiac activity based non-stationary RR interval series by studying their changes during sympathetic nervous system stimulation (isometric handgrip test) post-stimulation recovery professional ski mountaineers. The correlation between respiratory (RespRate) also duration career was analyzed. Short-term (5 min) ultra-short-term (1 rates patterns with no variations (0V), number acceleration runs length 1 (AR1), Porta's Index were greater, whereas Guzik's (GI) smaller compared rest. GI increased AR1 decreased recovery. Greater increases RMSSD associated greater decreases RespRate from rest 0V (Max-min method) but decelerations variance accelerations long-term variance. shorter duration. these longer Changes measures asymmetry, calculated RRi time induced recovery, reflected sympathovagal shift condition-related alterations athletes who practice mountaineering.

Language: Английский

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Cardiorespiratory coupling as an early marker of cardiac autonomic dysfunction in type 2 diabetes mellitus patients

Respiratory Physiology & Neurobiology, Journal Year: 2023, Volume and Issue: 311, P. 104042 - 104042

Published: Feb. 27, 2023

Language: Английский

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Assessing cardiorespiratory interactions via lagged joint symbolic dynamics during spontaneous and controlled breathing

Frontiers in Network Physiology, Journal Year: 2023, Volume and Issue: 3

Published: Aug. 3, 2023

Introduction: Joint symbolic analysis (JSA) can be utilized to describe interactions between time series while accounting for scales and nonlinear features. JSA is based on the computation of rate occurrence joint patterns built after symbolization. Lagged (LJSA) obtained from more classical by introducing a delay/lead over two combined form scheme, thus monitoring coordinated at different lags. Methods: In present study, we applied LJSA assessment cardiorespiratory coupling (CRC) heart period (HP) variability respiratory activity (R) in 19 healthy subjects (age: 27-35 years; 8 males, 11 females) during spontaneous breathing (SB) controlled (CB). The R CB was selected indistinguishable that SB, namely, 15 breaths·minute-1 (CB15), or slower than 10 (CB10), but both cases, very rapid were known present. ability approach follow variations strength tested unidirectionally bidirectionally coupled stochastic process using surrogate data test null hypothesis uncoupling. Results: We found that: i) proved HP significantly any experimental condition, not likely occur specific lag; ii) CB10 reduced CRC fastest increasing intermediate scales, leaving overall unvaried; iii) despite exhibiting similar rates sinus arrhythmia, SB CB15 induced interactions; iv) no dominant temporal scheme observed with relevant contributions either leading lagging R. Discussion: useful methodology explore HP-R dynamic shifts scales.

Language: Английский

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Cardiorespiratory coupling is associated with exercise capacity in athletes: A cross-sectional study

Respiratory Physiology & Neurobiology, Journal Year: 2023, Volume and Issue: 320, P. 104198 - 104198

Published: Nov. 11, 2023

Language: Английский

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Cardiorespiratory dynamics during respiratory maneuver in athletes

Frontiers in Network Physiology, Journal Year: 2023, Volume and Issue: 3

Published: Oct. 30, 2023

Introduction: The modern practice of sports medicine and medical rehabilitation requires the search for subtle criteria development conditions recovery body after diseases, which would have a prognostic value prevention negative effects training tools, also testify to course mechanisms counteracting pathogenetic processes in body. purpose this study was determine informative directions cardiorespiratory system parameters dynamics during performing maneuver with change breathing rate, may indicate functional state violation. Methods: results 183 healthy men aged 21.2 ± 2.3 years who regularly engaged various were analyzed. procedure studying included conducting combined measurements indicators activity respiratory cardiovascular systems sitting position using spiroarteriocardiograph device. duration 6 min involved sequential registration three rate (spontaneous breathing, at 0.1 Hz 0.25 Hz). Results: Performing comparison spontaneous leads multidirectional significant changes heart variability indicators-TP (ms2), LF LFHF (ms2/ms2); blood pressure indicators-TPDBP (mmHg2), LFSBP LFDBP HFSBP (mmHg2); volume respiration - LFR, (L×min-1)2; HFR, LFHFR, (L×min-1)2/(L×min-1)2; arterial baroreflex sensitivity BRLF (ms×mmHg-1), BRHF (ms×mmHg-1). Differences systemic hemodynamics synchronization informative. Conclusion: According study, it is shown that there are parameters, analysis increments made possible dynamics, their absolute values limits regarding occurrence interactions dysregulation.

Language: Английский

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Applicability of heart rate variability for cardiac autonomic assessment in long-term COVID patients: A systematic review

Journal of Electrocardiology, Journal Year: 2023, Volume and Issue: 82, P. 89 - 99

Published: Dec. 12, 2023

Language: Английский

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Unanticipated evolution of cardio-respiratory interactions with cognitive load during a Go-NoGo shooting task in virtual reality

Computers in Biology and Medicine, Journal Year: 2024, Volume and Issue: 182, P. 109109 - 109109

Published: Sept. 10, 2024

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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