Brooks, Alison; McGuine, Timothy; Hetzel, Scott
Effect of New Rule Limiting Full Contact Practice on Incidence of Sport Related Concussion in High School Football Players Journal Article
In: South African Journal of Sports Medicine, vol. 27, pp. 21, 2015.
Abstract | BibTeX | Tags: ATHLETIC trainers, BRAIN -- Concussion, etc., School sports -- Societies
@article{Brooks2015,
title = {Effect of New Rule Limiting Full Contact Practice on Incidence of Sport Related Concussion in High School Football Players},
author = {Brooks, Alison and McGuine, Timothy and Hetzel, Scott},
year = {2015},
date = {2015-01-01},
journal = {South African Journal of Sports Medicine},
volume = {27},
pages = {21},
abstract = {Purpose: To determine if the rate of sport-related concussion (SRC) is lower following state interscholastic athletic association mandated rule change (effective starting with 2014 season) that limited amount and duration of full contact activities during high school football practice sessions. The new rule prohibited full contact during week 1, and limited full contact to 75 min/wk during week 2 and to 60 min/wk week 3 and beyond. Full contact was defined as drills or game situations that occur at game speed when full tackles are made at a competitive pace and players are taken to the ground. Methods: Prospective cohort study of US high school football players (grades 9-12). Prior to rule change - 2012 (36 schools), 2013 (18 schools) seasons, 2081 players (age = 15.9+1.2 yrs). After rule change - 2014 season (26 schools), 945 players (age = 15.9 + 1.1 yrs). Players provided previous concussion and demographic information by self-report. Licensed Athletic Trainers recorded incidence and severity (median, IQR days lost) for each SRC. Chi-square tests were used to compare incidence of SRC in pre-rule 2012/2013 seasons with incidence in post-rule 2014 season. Wilcoxon Rank Sum tests were used to determine differences in severity (days lost) of SRC. Results: Total of 67 players (7.1%) sustained 70 SRC in 2014 compared to 206 players (9.0%) who sustained 211 SRC in 2012/2013 combined. Overall rate of SRC per 1000 Athletic Exposures (AE) was 1.28 in 2014 compared to 1.57 in 2012/2013 (p=0.155). Tackling was primary mechanism of injury for 46% of all SRC. The rate of SRC sustained overall in practice was significantly lower (p=.003) post-rule in 2014 (15 SRCs, 0.33/1000AE) compared to pre-rule 2012/2013 (86 SRCs, 0.76/1000AE). For 2014 season,12/15 SRCs were sustained during full contact practices, compared to 82/86 SRCs in 2012/2013 seasons. The rate of SRC in full contact practice was 0.57/1000AE in 2014 compared to 0.87/1000AE in 2012/2013 (p=0.216). There was no difference (p = 0.999) in the rate of SRC sustained in games pre (5.81/1000AE) and post rule (5.74/1000AE) change. There was no difference (p = 0.967) in severity of SRC pre (13 days lost [10-18 IQR]) and post rule (14 days lost [10.25-16 IQR]). Years of football playing experience did not affect incidence of SRC in 2014 season (p=0.941). Conclusions: The majority of SRC sustained in high school football practice occurred during full contact activities. The rate of SRC sustained in high school football practice was more than twice as high in the two seasons prior to a rule change limiting the amount and duration of full contact activities. Significance of Findings: Limitations on contact during high school football practice may be one effective measure to reduce the incidence of SRC.},
keywords = {ATHLETIC trainers, BRAIN -- Concussion, etc., School sports -- Societies},
pubstate = {published},
tppubtype = {article}
}
Brooks, Alison; McGuine, Timothy; Hetzel, Scott
Effect of New Rule Limiting Full Contact Practice on Incidence of Sport Related Concussion in High School Football Players Journal Article
In: South African Journal of Sports Medicine, vol. 27, pp. 21, 2015.
@article{Brooks2015,
title = {Effect of New Rule Limiting Full Contact Practice on Incidence of Sport Related Concussion in High School Football Players},
author = {Brooks, Alison and McGuine, Timothy and Hetzel, Scott},
year = {2015},
date = {2015-01-01},
journal = {South African Journal of Sports Medicine},
volume = {27},
pages = {21},
abstract = {Purpose: To determine if the rate of sport-related concussion (SRC) is lower following state interscholastic athletic association mandated rule change (effective starting with 2014 season) that limited amount and duration of full contact activities during high school football practice sessions. The new rule prohibited full contact during week 1, and limited full contact to 75 min/wk during week 2 and to 60 min/wk week 3 and beyond. Full contact was defined as drills or game situations that occur at game speed when full tackles are made at a competitive pace and players are taken to the ground. Methods: Prospective cohort study of US high school football players (grades 9-12). Prior to rule change - 2012 (36 schools), 2013 (18 schools) seasons, 2081 players (age = 15.9+1.2 yrs). After rule change - 2014 season (26 schools), 945 players (age = 15.9 + 1.1 yrs). Players provided previous concussion and demographic information by self-report. Licensed Athletic Trainers recorded incidence and severity (median, IQR days lost) for each SRC. Chi-square tests were used to compare incidence of SRC in pre-rule 2012/2013 seasons with incidence in post-rule 2014 season. Wilcoxon Rank Sum tests were used to determine differences in severity (days lost) of SRC. Results: Total of 67 players (7.1%) sustained 70 SRC in 2014 compared to 206 players (9.0%) who sustained 211 SRC in 2012/2013 combined. Overall rate of SRC per 1000 Athletic Exposures (AE) was 1.28 in 2014 compared to 1.57 in 2012/2013 (p=0.155). Tackling was primary mechanism of injury for 46% of all SRC. The rate of SRC sustained overall in practice was significantly lower (p=.003) post-rule in 2014 (15 SRCs, 0.33/1000AE) compared to pre-rule 2012/2013 (86 SRCs, 0.76/1000AE). For 2014 season,12/15 SRCs were sustained during full contact practices, compared to 82/86 SRCs in 2012/2013 seasons. The rate of SRC in full contact practice was 0.57/1000AE in 2014 compared to 0.87/1000AE in 2012/2013 (p=0.216). There was no difference (p = 0.999) in the rate of SRC sustained in games pre (5.81/1000AE) and post rule (5.74/1000AE) change. There was no difference (p = 0.967) in severity of SRC pre (13 days lost [10-18 IQR]) and post rule (14 days lost [10.25-16 IQR]). Years of football playing experience did not affect incidence of SRC in 2014 season (p=0.941). Conclusions: The majority of SRC sustained in high school football practice occurred during full contact activities. The rate of SRC sustained in high school football practice was more than twice as high in the two seasons prior to a rule change limiting the amount and duration of full contact activities. Significance of Findings: Limitations on contact during high school football practice may be one effective measure to reduce the incidence of SRC.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Brooks, Alison; McGuine, Timothy; Hetzel, Scott
Effect of New Rule Limiting Full Contact Practice on Incidence of Sport Related Concussion in High School Football Players Journal Article
In: South African Journal of Sports Medicine, vol. 27, pp. 21, 2015.
Abstract | BibTeX | Tags: ATHLETIC trainers, BRAIN -- Concussion, etc., School sports -- Societies
@article{Brooks2015,
title = {Effect of New Rule Limiting Full Contact Practice on Incidence of Sport Related Concussion in High School Football Players},
author = {Brooks, Alison and McGuine, Timothy and Hetzel, Scott},
year = {2015},
date = {2015-01-01},
journal = {South African Journal of Sports Medicine},
volume = {27},
pages = {21},
abstract = {Purpose: To determine if the rate of sport-related concussion (SRC) is lower following state interscholastic athletic association mandated rule change (effective starting with 2014 season) that limited amount and duration of full contact activities during high school football practice sessions. The new rule prohibited full contact during week 1, and limited full contact to 75 min/wk during week 2 and to 60 min/wk week 3 and beyond. Full contact was defined as drills or game situations that occur at game speed when full tackles are made at a competitive pace and players are taken to the ground. Methods: Prospective cohort study of US high school football players (grades 9-12). Prior to rule change - 2012 (36 schools), 2013 (18 schools) seasons, 2081 players (age = 15.9+1.2 yrs). After rule change - 2014 season (26 schools), 945 players (age = 15.9 + 1.1 yrs). Players provided previous concussion and demographic information by self-report. Licensed Athletic Trainers recorded incidence and severity (median, IQR days lost) for each SRC. Chi-square tests were used to compare incidence of SRC in pre-rule 2012/2013 seasons with incidence in post-rule 2014 season. Wilcoxon Rank Sum tests were used to determine differences in severity (days lost) of SRC. Results: Total of 67 players (7.1%) sustained 70 SRC in 2014 compared to 206 players (9.0%) who sustained 211 SRC in 2012/2013 combined. Overall rate of SRC per 1000 Athletic Exposures (AE) was 1.28 in 2014 compared to 1.57 in 2012/2013 (p=0.155). Tackling was primary mechanism of injury for 46% of all SRC. The rate of SRC sustained overall in practice was significantly lower (p=.003) post-rule in 2014 (15 SRCs, 0.33/1000AE) compared to pre-rule 2012/2013 (86 SRCs, 0.76/1000AE). For 2014 season,12/15 SRCs were sustained during full contact practices, compared to 82/86 SRCs in 2012/2013 seasons. The rate of SRC in full contact practice was 0.57/1000AE in 2014 compared to 0.87/1000AE in 2012/2013 (p=0.216). There was no difference (p = 0.999) in the rate of SRC sustained in games pre (5.81/1000AE) and post rule (5.74/1000AE) change. There was no difference (p = 0.967) in severity of SRC pre (13 days lost [10-18 IQR]) and post rule (14 days lost [10.25-16 IQR]). Years of football playing experience did not affect incidence of SRC in 2014 season (p=0.941). Conclusions: The majority of SRC sustained in high school football practice occurred during full contact activities. The rate of SRC sustained in high school football practice was more than twice as high in the two seasons prior to a rule change limiting the amount and duration of full contact activities. Significance of Findings: Limitations on contact during high school football practice may be one effective measure to reduce the incidence of SRC.},
keywords = {ATHLETIC trainers, BRAIN -- Concussion, etc., School sports -- Societies},
pubstate = {published},
tppubtype = {article}
}