TY - JOUR
T1 - Head impact exposure in practices correlates with exposure in games for youth football players
AU - Bellamkonda, Srinidhi
AU - Woodward, Samantha J.
AU - Campolettano, Eamon
AU - Gellner, Ryan
AU - Kelley, Mireille E.
AU - Jones, Derek A.
AU - Genemaras, Amaris
AU - Beckwith, Jonathan G.
AU - Greenwald, Richard M.
AU - Maerlender, Arthur C.
AU - Rowson, Steven
AU - Duma, Stefan M.
AU - Urban, Jillian E.
AU - Stitzel, Joel D.
AU - Crisco, Joseph J.
PY - 2018/10
Y1 - 2018/10
N2 - This study aimed to compare head impact exposures between practices and games in football players ages 9 to 14 years, who account for approximately 70% of all football players in the United States. Over a period of 2 seasons, 136 players were enrolled from 3 youth programs, and 49,847 head impacts were recorded from 345 practices and 137 games. During the study, individual players sustained a median of 211 impacts per season, with a maximum of 1226 impacts. Players sustained 50th (95th) percentile peak linear acceleration of 18.3 (46.9) g, peak rotational acceleration of 1305.4 (3316.6) rad·s−2, and Head Impact Technology Severity Profile of 13.7 (24.3), respectively. Overall, players with a higher frequency of head impacts at practices recorded a higher frequency of head impacts at games (P < .001, r2 = .52), and players who sustained a greater average magnitude of head impacts during practice also recorded a greater average magnitude of head impacts during games (P < .001). The youth football head impact data quantified in this study provide valuable insight into the player exposure profile, which should serve as a key baseline in efforts to reduce injury.
AB - This study aimed to compare head impact exposures between practices and games in football players ages 9 to 14 years, who account for approximately 70% of all football players in the United States. Over a period of 2 seasons, 136 players were enrolled from 3 youth programs, and 49,847 head impacts were recorded from 345 practices and 137 games. During the study, individual players sustained a median of 211 impacts per season, with a maximum of 1226 impacts. Players sustained 50th (95th) percentile peak linear acceleration of 18.3 (46.9) g, peak rotational acceleration of 1305.4 (3316.6) rad·s−2, and Head Impact Technology Severity Profile of 13.7 (24.3), respectively. Overall, players with a higher frequency of head impacts at practices recorded a higher frequency of head impacts at games (P < .001, r2 = .52), and players who sustained a greater average magnitude of head impacts during practice also recorded a greater average magnitude of head impacts during games (P < .001). The youth football head impact data quantified in this study provide valuable insight into the player exposure profile, which should serve as a key baseline in efforts to reduce injury.
KW - HIT system
KW - Impacts per game
KW - Impacts per practice
KW - Linear acceleration
KW - Rotational acceleration
UR - http://www.scopus.com/inward/record.url?scp=85055605119&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055605119&partnerID=8YFLogxK
U2 - 10.1123/jab.2017-0207
DO - 10.1123/jab.2017-0207
M3 - Article
C2 - 29651910
AN - SCOPUS:85055605119
VL - 34
SP - 354
EP - 360
JO - Journal of Applied Biomechanics
JF - Journal of Applied Biomechanics
SN - 1065-8483
IS - 5
ER -