Autonomic cardiac and cardiorespiratory responses in volleyball athletes compared to recreationally trained individuals
| Autor: | Alex Souto Maior, Pedro Menezes, Steven Fleck, Travis Bunker, Matthew Rhea, Richard Diego Leite, Roberto Simão |
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| Jazyk: | portugalština |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Medicina, Vol 48, Iss 6 (2015) |
| Druh dokumentu: | article |
| ISSN: | 2176-7262 0076-6046 |
| DOI: | 10.11606/issn.2176-7262.v48i6p589-597 |
| Popis: | Objective: The aim of this study was to investigate the autonomic cardiac modulation between professional volleyball players (VP) and recreational aerobically trained individuals (RAT). Methods: Twentyeight men were divided into two groups, (VP; n = 14) and (RAT; n = 14) and each group was subjected to a sub-maximal progressive ramp treadmill test. Cardiac cycle beat to beat (RR) intervals, was obtained through electrocardiogram recording with the test being stopped when the individual reached 85% of their maximum age-predicted heart rate (HR). The heart rate variables were calculated from ECG using MATLABbased algorithms. Results: At rest, RAT showed lower values of the mean value of RR interval, the root mean square successive difference of all RR intervals (r-MSSD), low frequency (LF) and total power spectral (TP) when compared to VP. No significant difference between groups was noted for high frequency (HF) and index LF/HF. After exercise, no significant differences were measured between groups. Mean values of VO2, VE/VO2, and VE showed no significant difference at rest and post effort. Conclusion: The variables such as frequency, intensity and volume may to interfere the autonomic cardiac modulation and possibly indicating a superior protection against exercise-induced ventricular arrhythmias and lower risk of sudden cardiac deaths |
| Databáze: | Directory of Open Access Journals |
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