| Title | Transient suppression of heart rate complexity in concussed athletes. | ||
| Author | La Fountaine, Michael F; Heffernan, Kevin S; Gossett, James D; Bauman, William A; De Meersman, Ronald E | ||
| Journal | Auton Neurosci | Publication Year/Month | 2009-Jun |
| PMID | 19303821 | PMCID | -N/A- |
| Affiliation | 1.Center of Excellence on the Medical Consequences of Spinal Cord Injury, James J. Peters VA Medical Center, Bronx, NY 10468, USA. Michael.LaFountaine@va.gov. | ||
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.