Clinical Autonomic Research

, Volume 20, Issue 4, pp 229–233

Does an acute inflammatory response temporarily attenuate parasympathetic reactivation?

Authors

    • Department of Sports Informatics, The Health and Integrative Physiology LaboratoryUniversity of Seoul
  • Kevin S. Heffernan
    • Division of CardiologyTufts Medical Center
  • Soo-Hyun Park
    • Department of Sports ScienceSungkyunkwan University
  • Sun-Hae Jung
    • Department of Sports ScienceSungkyunkwan University
  • Eun Sun Yoon
    • Department of Sports Informatics, The Health and Integrative Physiology LaboratoryUniversity of Seoul
  • Euy Jin Kim
    • Department of Sports Informatics, The Health and Integrative Physiology LaboratoryUniversity of Seoul
  • Eui Soo Ahn
    • Department of Sports ScienceSungkyunkwan University
  • Bo Fernhall
    • Department of Kinesiology and Community HealthUniversity of Illinois
Research Article

DOI: 10.1007/s10286-010-0069-3

Cite this article as:
Jae, S.Y., Heffernan, K.S., Park, S. et al. Clin Auton Res (2010) 20: 229. doi:10.1007/s10286-010-0069-3

Abstract

Purpose

Although observational studies suggest that inflammatory markers are associated with autonomic nervous system function, the causal relationship of this is not clear. We tested the hypothesis that acute inflammation will temporarily attenuate vagal reactivation as measured by heart rate recovery after exercise.

Methods

In this double-blind randomized study, 24 healthy subjects were assigned to receive either an influenza vaccine (n = 15) as a model to generate a systemic inflammatory response or a sham vaccine (n = 9). Heart rate recovery after exercise testing was used as an index of parasympathetic nervous function and was calculated as the difference between maximal heart rate during the test and heart rate 1 and 2 min after cessation of exercise. Both blood analysis and treadmill exercise stress tests were conducted before and 48 h after each vaccination.

Results

Inflammatory marker, log C-reactive protein (1.9 ± 1.2 to 2.8 ± 1.4, p < 0.05) was significantly increased after the influenza vaccine. Heart rate recovery 1 was significantly attenuated 48 h after the influenza vaccination (23.4 ± 6.4 to 20.5 ± 4.9, p < 0.05) but not sham vaccination.

Conclusions

These findings show that acute inflammation is associated with a temporary deterioration in cardiac autonomic nervous system function in healthy subjects.

Keywords

InflammationAutonomic nervous systemHeart rate recoveryC-reactive protein

Copyright information

© Springer-Verlag 2010