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. 2009 Jun 15;148(1-2):101-3.
doi: 10.1016/j.autneu.2009.03.001. Epub 2009 Mar 21.

Transient suppression of heart rate complexity in concussed athletes

Michael F La Fountaine  1 , Kevin S Heffernan, James D Gossett, William A Bauman, Ronald E De Meersman
Affiliations

Transient suppression of heart rate complexity in concussed athletes

Michael F La Fountaine et al. Auton Neurosci. .

Abstract

Heart rate variability (HRV) and complexity (HRC) were calculated at rest and during an isometric hand grip test (IHGT) within 48-hours (48 h) and two weeks (Week Two) of a concussion in athletes (CG) and control subjects. No differences were present at rest or in HRV during IGHT. HRC was significantly lower in the CG compared to controls at 48 h during IHGT. In CG at Week Two during IHGT, HRC was significantly greater than 48 h observations and not significantly different than controls. The findings suggest that HRC may have utility in detecting efferent cardiac autonomic anomalies within two weeks of concussion.

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