@article{ref1,
title="Reaction time and joint kinematics during functional movement in recently concussed individuals",
journal="Archives of physical medicine and rehabilitation",
year="2018",
author="Lynall, Robert C. and Blackburn, J. Troy and Guskiewicz, Kevin M. and Marshall, Stephen W. and Plummer, Prudence and Mihalik, Jason P.",
volume="99",
number="5",
pages="880-886",
abstract="OBJECTIVE: To compare movement reaction time and joint kinematics between recently concussed and matched control recreational athletes during 3 functional tasks. <br><br>DESIGN: Cross-sectional. SETTING: Laboratory. PARTICIPANTS: Thirty college-aged recreational athletes comprising two groups (15 participants each): 1) Recent concussion group (median time since concussion 126 days, range 28-432 days), and 2) Age- and sex-matched control group with no recent concussions. INTERVENTIONS: We investigated movement reaction time and joint kinematics during 3 tasks: 1) Jump-landing, 2) Anticipated-cut, and 3) Unanticipated-cut. MAIN OUTCOME MEASURES: Reaction time and reaction time cost (reaction timejump landing-reaction timecut/reaction timejump landingx100%), along with trunk, hip, and knee joint angles in the sagittal and frontal planes at initial ground contact. <br><br>RESULTS: There were no reaction time between-group differences, but the control group displayed improved reaction time cost (10.7%) during anticipated cutting as compared to the concussed group (0.8%; p=0.030). The control group displayed less trunk flexion than the concussed group during the non-dominant anticipated cut (5.1° difference; p=0.022). There were no other kinematic between-group differences (p≥0.079). <br><br>CONCLUSIONS: We observed subtle reaction time and kinematic differences between recently concussed and non-concussed individuals more than a month after return-to-activity following concussion. The clinical interpretation of these findings remains unclear, but may have future implications for post-concussion management and rehabilitation.<br><br>Copyright © 2018. Published by Elsevier Inc.<p /> <p>Language: en</p>",
language="en",
issn="0003-9993",
doi="10.1016/j.apmr.2017.12.011",
url="http://dx.doi.org/10.1016/j.apmr.2017.12.011"
}