@article{ref1,
title="Does a 20 minute cognitive task increase concussion symptoms in concussed athletes?",
journal="Brain injury",
year="2013",
author="Covassin, Tracey and Crutcher, Bryan and Wallace, Jessica",
volume="27",
number="13-14",
pages="1589-1594",
abstract="OBJECTIVE: The purpose of the present study was to examine if concussion symptoms worsened immediately (i.e. 20 minutes) following performance on a scomputerized neurocognitive test.   Research design: Cross-sectional study; Level of evidence, 2. Methods and procedures: A total of 165 athletes with a concussion participated in the study. Participants completed the Immediate Post-concussion Assessment and Cognitive Test (ImPACT) and Post-concussion Symptom Scale (PCSS) at baseline, 3 and 10 days post-concussion. Participants completed a second PCSS following the ImPACT test at 3 and 10 days post-injury.   Main outcomes and results: Athletes with a concussion exhibited greater symptoms post-neurocognitive test 3 days post-concussion on headache (p = 0.01), nausea (p = 0.03), dizziness (p = 0.03), sadness (p = 0.005), mentally foggy (p = 0.002) and visual problems (p = 0.007). Athletes with a concussion demonstrated increased symptoms on sadness (p = 0.00) and difficulty remembering (p = 0.03) at 10 days post-injury. Athletes also demonstrated neurocognitive impairments in verbal memory (p = 0.009) and slower reaction time (p = 0.01) 10 days post-concussion and visual memory (p = 0.000) and motor processing speed (p = 0.000) impairments at 3 days post-injury.   CONCLUSION: The current study suggests that there may be an increase in concussion symptoms following a 20-minute cognitive task. Thus, it illustrates the need for clinicians to make sure they are symptom free with both physical and cognitive testing.<p /> <p>Language: en</p>",
language="en",
issn="0269-9052",
doi="10.3109/02699052.2013.823656",
url="http://dx.doi.org/10.3109/02699052.2013.823656"
}