European Journal of Applied Physiology

, Volume 118, Issue 6, pp 1287–1288 | Cite as

Make it easier! Evaluation of the ‘vagal-sympathetic effect’ in different conditions with R–R intervals monitoring

  • André R. Medeiros
  • Scott Michael
  • Daniel A. Boullosa
Letter to the Editor



Heart rate


Heart rate variability


High frequency


Low frequency


LF-to-HF ratio


Root mean square of successive normal R–R interval differences


Standard deviation of normal R–R intervals


SDNN-to-RMSSD ratio


Author contributions

All authors contributed equally on the conception and writing of this letter. All authors read and approved the final manuscript version.


ARM (UC17351170) enjoys a PROSUP scholarship Grant from CAPES. DAB enjoys a productivity research Grant from CNPq (305131/2015-0).


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Post-graduate Program in Physical EducationCatholic University of BrasiliaÁguas ClarasBrazil
  2. 2.Centre for Human and Applied PhysiologyUniversity of WollongongWollongongAustralia
  3. 3.Sport and Exercise Science, College of Healthcare SciencesJames Cook UniversityTownsvilleAustralia

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