@article{ref1,
title="The effect of tackling training on head accelerations in youth American football",
journal="International journal of sports physical therapy",
year="2018",
author="Schussler, Eric and Jagacinski, Richard J. and White, Susan E. and Chaudhari, Ajit M. and Buford, John A. and Onate, James A.",
volume="13",
number="2",
pages="229-237",
abstract="BACKGROUND: Many organizations have introduced frameworks to reduce the incidence of football related concussions through proper equipment fitting, coach education, and alteration of tackling technique. <br><br>PURPOSE: The purpose of this study was to examine the effects of training in a vertical, head up tackling style on the number of head accelerations experienced while tackling in a controlled laboratory situation. The authors hypothesized that training in a head up tackling technique would reduce the severity of head acceleration experienced by participants. <br><br>DESIGN: Controlled Laboratory Study. <br><br>METHODS: Twenty-four participants (11.5 ± 0.6 years old, 60.5 ± 2.2 in, 110 ± 18.4 lbs.) with previous playing experience completed a one-day training session on tackling technique utilizing a tackling dummy. A subgroup of these participants completed an additional two days of training with a 48 hour retention test. Head accelerations were analyzed at baseline and end of training. Feedback consisted of verbal feedback utilizing the Qualitative Youth Tackling Scale (QYTS) and video tackling playback. <br><br>RESULTS: A significant reduction in the number of peak linear head accelerations over 10 g and peak rotational head accelerations over 1885 deg/s<sup>2</sup> were found in dummy tackling after training in both the one day and three day training regimens. A significant change in QYTS tackling form score was found between pretest and post-test (p = 0.004). Participants with larger steps had a 2.28, 4.42 and 4.14 increased odds ratio of sustaining head accelerations over 10, 15 and 20 g respectively. <br><br>CONCLUSIONS: Training in a vertical, head up tackling style decreased the number of head accelerations over threshold values sustained while tackling; decreased step length may be the driving factor in the effectiveness of this tackling form. LEVEL OF EVIDENCE: Level 3b.<p /> <p>Language: en</p>",
language="en",
issn="2159-2896",
doi="",
url="http://dx.doi.org/"
}