Face cooling exposes cardiac parasympathetic and sympathetic dysfunction in recently concussed college athletes

We tested the hypothesis that concussed college athletes (CA) have attenuated parasympathetic and sympathetic responses to face cooling (FC). Eleven symptomatic CA (age: 20 ± 2 years, 5 women) who were within 10 days of concussion diagnosis and 10 healthy controls (HC; age: 24 ± 4 years, 5 women) pa...

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Bibliographic Details
Published in:Physiological reports 2018-05, Vol.6 (9), p.e13694-n/a
Main Authors: Johnson, Blair D., O'Leary, Morgan C., McBryde, Muhamed, Sackett, James R., Schlader, Zachary J., Leddy, John J.
Format: Article
Language:English
Subjects:
Adult
Arterial Pressure
Athletes
Autonomic Nervous System
Blood pressure
Brain Concussion - physiopathology
Cardiovascular Conditions, Disorders and Treatments
Cardiovascular System - physiopathology
Cold Temperature
Concussion
EKG
Face - physiopathology
Female
Heart
Heart diseases
Heart Rate
heart rate variability
Humans
Male
mild traumatic brain injury
Neurological Conditions, Disorders and Treatments
Original Research
Parasympathetic nervous system
Parasympathetic Nervous System - physiopathology
Physiology
Plastics
Skin Temperature
Student athletes
Students
sympathetic nervous system
Sympathetic Nervous System - physiopathology
Young Adult
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Summary:We tested the hypothesis that concussed college athletes (CA) have attenuated parasympathetic and sympathetic responses to face cooling (FC). Eleven symptomatic CA (age: 20 ± 2 years, 5 women) who were within 10 days of concussion diagnosis and 10 healthy controls (HC; age: 24 ± 4 years, 5 women) participated. During FC, a plastic bag filled with ice water (~0°C) was placed on the forehead, eyes, and cheeks for 3 min. Heart rate (ECG) and blood pressure (photoplethysmography) were averaged at baseline and every 60 sec during FC. High‐frequency (HF) power was obtained from spectral analysis of the R‐R interval. Data are presented as a change from baseline. Baseline heart rate (HC: 61 ± 12, CA: 57 ± 12 bpm; P = 0.69), mean arterial pressure (MAP) (HC: 94 ± 10, CA: 96 ± 13 mmHg; P = 0.74), and HF (HC: 2294 ± 2314, CA: 2459 ± 2058 msec2; P = 0.86) were not different between groups. Heart rate in HC decreased at 2 min (−7 ± 11 bpm; P = 0.02) but did not change in CA (P > 0.43). MAP increased at 1 min (HC: 12 ± 6, CA: 6 ± 6 mmHg), 2 min (HC: 21 ± 7, CA: 11 ± 7 mmHg), and 3 min (HC: 20 ± 6, CA: 13 ± 7 mmHg) in both groups (P 
ISSN:2051-817X
DOI:10.14814/phy2.13694