Cardiorespiratory coupling strength in athletes and non-athletes

Author(s)

de Abreu, Raphael Martins ; Porta, Alberto ; Rehder-Santos, Patricia ; Cairo, Beatrice ; Sakaguchi, Camila Akemi ; da Silva, Claudio Donisete ; Signini, Etore De Favari ; Milan-Mattos, Juliana Cristina ; Catai, Aparecida Maria

• Document type: Journal article
• Source: Respiratory Physiology & Neurobiology; v. 305, p. 8-pg., 2022-07-13.

Abstract

Purpose: Despite the relevant presence of nonlinear components on heart period (HP) likely due to cardiorespiratory coupling (CRC), the HP is frequently analyzed in absence of concomitant recordings of respiratory movements (RESP). This study aims to assess the cardiovascular dynamics and CRC during postural challenge in athletes and non-athletes via joint symbolic analysis (JSA). Methods: A cross-sectional study was conducted in 50 men, aged between 20 and 40 yrs, divided into athletes (n = 25) and non-athletes (n = 25) groups. The electrocardiogram, blood pressure and RESP signals were recorded during 15 min in both supine position (REST) and after active postural maneuver (STAND). From the beat-to-beat series of HP, systolic arterial pressure (SAP) and RESP, we computed the time and frequency domain indexes and baroreflex sensitivity. The JSA was based on the definition of symbolic HP and RESP patterns and on the evaluation of the rate of their simultaneous occurrence in both HP and RESP series. Results: The JSA analysis was able to identify higher CRC strength at REST in athletes. Moreover, the response of CRC to STAND depended on the time scales of the analysis and was much more evident in athletes than in non -athletes, thus indicating a more reactive autonomic control in athletes. Conclusion: Assessing CRC in athletes via JSA provides additional information compared to standard linear time and frequency domain tools likely due to the more relevant presence of nonlinearities in HP-RESP variability relationship. (AU)

• FAPESP's process: 16/22215-7 - Impact of inspiratory muscle training and aging on metabolic mapping, autonomic modulation, and cardiovascular, respiratory and metabolic responses, and prediction of cardiorespiratory health through wearables
• Grantee: Aparecida Maria Catai
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 18/11123-0 - Innovative analysis of cardiovascular autonomic control in cyclists after different intensities of inspiratory muscle training: controlled and randomized clinical study
• Grantee: Raphael Martins de Abreu
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)
• FAPESP's process: 20/15769-1 - Technical support to the cardiovascular physiotherapy laboratory in the performance of functional tests in healthy men - part II
• Grantee: Raphael Martins de Abreu
• Support Opportunities: Scholarships in Brazil - Technical Training Program - Technical Training
• FAPESP's process: 17/13402-0 - Comparison of different intensities of inspiratory muscle training on the cardiovascular autonomic control of cyclists: controlled and randomized clinical study
• Grantee: Raphael Martins de Abreu
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)