Introduction and Objective:The analysis of heart rate variability (HRV) is an important method for the assessment of cardiac autonomic modulation, and differs according to the health, fitness level and training conditions. Therefore, the aim of this study was to compare the HRV between endurance athletes and healthy non-athletes and between athletes of different types of endurance and to identify the influence of high performance training on HRV. Material and Methods:This is a systematic review of Pubmed database of original articles published between August 2009 and December 2014 that assessed heart rate variability in athletes. We used the following combinations of terms: ''autonomic cardiac'' and sport; ''autonomic cardiac'' and athlete; ''heart rate variability'' and sport e ''heart rate variability'' and athlete. Results:All abstracts were read, pre-selected 29 articles being readin full, resulting in 11 that actually be considered under study of the profile. Ten of the evaluation performed in the time domain, eight on frequency domain and seven both. Conclusion:Athletes of some sports have higher parasympathetic modulation when compared to non-athletes. In addition, the HRV can change under different conditions, depending on variables such as age, fatigue, body fat, intensity and training loads. In general, HRV analysis proves to be an important tool for assessment of cardiac autonomic modulation in athletes before, during and after training, recovery and for training prescription.
Dergi Türü : Uluslararası
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