Abstract
Purpose
The practice of judo is associated with some heart conditions. Some authors suggest cardiac morphometric changes as an increase in diastolic dimension of the left ventricle, interventricular septum and posterior wall thickness of the left ventricle with an improvement in aerobic and anaerobic performance. However, few studies have explored the autonomic modulation by heart rate variability in judo athletes. The objective of this study was to evaluate the effect of judo training 6 months on autonomic modulation analysis, time and frequency domains symbolic.
Methods
The study included 16 young male, 18–25 years of age were recruited from university students through campus ads and divided into two groups: sedentary young males (S; n = 9) and judo (n = 7).
Results
There are no significant differences in age, height, weight, body mass index and heart rate among sedentary groups and judo. During the reporting period, sedentary individuals displayed parameters of the variability of the lower heart rate in the time domain, as SDNN, RMSSD, PNN50 and VarRR, compared with the subjects of judo. As the symbolic analysis it observed greater parasympathetic modulation (2UV) in judo group, compared with the sedentary group. However, no changes were observed in the sympathetic modulation (0V) between the groups.
Conclusions
We conclude that the exclusive practice of judo for 6 months produces autonomic changes, even without contributing to changes in body composition.
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Acknowledgments
The authors thank the generous cooperation of the volunteers who participated in this study. Bruno Rodrigues had grants from Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, Bolsa Produtividade em Pesquisa) and from Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP).
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All procedures performed in studies involving human participants were in accordance with the ethical Standards of the institutional or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical Standards. This article does not contain any studies with animals performed by any of the authors.
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Informed consent was obtained from all individual participants included in study.
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Araújo, P.S., de Carvalho, W.R.G., Navarro, F. et al. Cardiac autonomic modulation in judo athletes: evaluation by linear and non-linear method. Sport Sci Health 12, 125–130 (2016). https://doi.org/10.1007/s11332-015-0256-7
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DOI: https://doi.org/10.1007/s11332-015-0256-7