RT Journal Article
T1 Differences in nonlinear heart dynamics during rest and exercise and for different training
A1 Gómez Extremera, Manuel
A1 Bernaola-Galván, Pedro Ángel
A1 Vargas, Salvador
A1 Benítez-Porres, Javier
A1 Carpena-Sánchez, Pedro Juan
A1 Romance-García, Ángel Ramón
K1 Ejercicio físico - Aspectos fisiológicos
K1 Ritmo cardíaco
AB Objective: In this work we want to analyze differences in nonlinear properties between rest and exercise and also to study the permanent effects of physical exercise on heart rate dynamics. Approach: It has been shown that physical exercise alters heart dynamics by increasing heart rate and decreasing variability, modifying spectral power and linear correlations, etc. We hypothesize that physical exercise should also reduce nonlinearity in the heartbeat time series. To quantify nonlinearity in the heartbeat time series, we use an index of nonlinearity recently proposed by Bernaola et al based on correlations of the magnitude time series. Main results: Our results confirm our initial hypothesis of loss of nonlinearity during physical exercise. Moreover, regarding the permanent effects of physical exercise on heart rate dynamics, we also obtain that aerobic physical training tends to increase nonlinearity in heart dynamics during rest. Significance: It is well-known that heart dynamics are controlled by complex interactions between the sympathetic and parasympathetic branches of the autonomic nervous system. Moreover, these two branches act in a competing way, resulting in a clear parasympathetic withdrawal and sympathetic activation during physical exercise. We associate these interactions during physical exercise with a drastic loss of nonlinear properties in the heartbeat time series, revealing the importance of nonlinearity measures in the study of complex systems.
PB IOP Publishing
YR 2018
FD 2018
LK https://hdl.handle.net/10630/38946
UL https://hdl.handle.net/10630/38946
LA eng
NO Gómez-Extremera, M., Bernaola-Galván, P. A., Vargas, S., Benítez-Porres, J., Carpena, P., & Romance, A. R. (2018). Differences in nonlinear heart dynamics during rest and exercise and for different training. Physiological Measurement, 39(8), 084008. doi:10.1088/1361-6579/aad929
NO Política de acceso abierto tomada de: https://openpolicyfinder.jisc.ac.uk/id/publication/11340
NO This work is partially supported by Grants FQM-7964 and FQM-362 from the Spanish Junta de Andalucía and the University of Málaga (Campus of International Excellence Andalucía Tech).
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026