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Transient suppression of heart rate complexity in concussed athletes.

Research paper by Michael F MF La Fountaine, Kevin S KS Heffernan, James D JD Gossett, William A WA Bauman, Ronald E RE De Meersman

Indexed on: 24 Mar '09Published on: 24 Mar '09Published in: Autonomic Neuroscience: Basic and Clinical



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.