schmidtj uga edu Schmidt, Julianne D; Guskiewicz, Kevin M; Mihalik, Jason P; Blackburn, J Troy; Siegmund, Gunter P; Marshall, Stephen W
Head Impact Magnitude in American High School Football Journal Article
In: Pediatrics, vol. 138, no. 2, pp. 1–9, 2016, ISBN: 00314005.
Abstract | Links | BibTeX | Tags: ACCELERATION (Mechanics), Biomechanics, DATA analysis -- Software, Football injuries -- Prevention, Head injuries -- Prevention, HIGH school athletes, SAFETY hats, SAMPLING (Statistics), VIDEO recording
@article{Schmidt2016,
title = {Head Impact Magnitude in American High School Football},
author = {schmidtj uga edu Schmidt, Julianne D and Guskiewicz, Kevin M and Mihalik, Jason P and Blackburn, J Troy and Siegmund, Gunter P and Marshall, Stephen W},
doi = {10.1542/peds.2015-4231},
isbn = {00314005},
year = {2016},
date = {2016-01-01},
journal = {Pediatrics},
volume = {138},
number = {2},
pages = {1--9},
abstract = {OBJECTIVES: To describe determinants of head impact magnitudes between various play aspects in high school football. METHODS: Thirty-two high school American football players wore Head Impact Telemetry System instrumented helmets to capture head impact magnitude (linear acceleration, rotational acceleration, and Head Impact Technology severity profile [HITsp]). We captured and analyzed video from 13 games (n = 3888 viewable head impacts) to determine the following play aspects: quarter, impact cause, play type, closing distance, double head impact, player's stance, player's action, direction of gaze, athletic readiness, level of anticipation, player stationary, ball possession, receiving ball, and snapping ball. We conducted random intercepts general linear mixed models to assess the differences in head impact magnitude between play aspects ($alpha$ = 0.05). RESULTS: The following aspects resulted in greater head impact magnitude: impacts during the second quarter (HITsp: P= .03); contact with another player (linear, rotational, HITsp: P \< .001); initial head impact when the head is struck twice (linear, rotational, HITsp: P \< .001); longer closing distances, especially when combined with a 3-point stance or when being struck in the head (linear: P = .03); the 2-point stance (linear, rotational, HITsp: P \< .001); and offensive linemen not snapping the ball compared with those snapping the ball (rotational: P = .02, HITsp: P = .02). CONCLUSIONS: Preventing head impacts caused by contact with another player may reduce head impact magnitude in high school football. Rule or coaching changes that reduce collisions after long closing distances, especially when combined with the 3-point stance or when a player is being struck in the head, should be considered. [ABSTRACT FROM AUTHOR]},
keywords = {ACCELERATION (Mechanics), Biomechanics, DATA analysis -- Software, Football injuries -- Prevention, Head injuries -- Prevention, HIGH school athletes, SAFETY hats, SAMPLING (Statistics), VIDEO recording},
pubstate = {published},
tppubtype = {article}
}
Brett, Benjamin L; Smyk, Nathan; Solomon, Gary; Baughman, Brandon C; Schatz, Philip
In: Archives of Clinical Neuropsychology, vol. 31, no. 8, pp. 904–914, 2016, ISBN: 08876177.
Abstract | Links | BibTeX | Tags: assessment, Childhood brain insult, Cognitive Ability, COGNITIVE testing, head injury, HIGH school athletes, Intraclass correlation, Norms/normative studies, Practice effects/reliable change, psychology, STATISTICAL reliability, Test construction, traumatic brain injury
@article{Brett2016,
title = {Long-term Stability and Reliability of Baseline Cognitive Assessments in High School Athletes Using ImPACT at 1-, 2-, and 3-year Test-Retest Intervals},
author = {Brett, Benjamin L and Smyk, Nathan and Solomon, Gary and Baughman, Brandon C and Schatz, Philip},
doi = {10.1093/arclin/acw055},
isbn = {08876177},
year = {2016},
date = {2016-01-01},
journal = {Archives of Clinical Neuropsychology},
volume = {31},
number = {8},
pages = {904--914},
abstract = {Objective: The ImPACT (Immediate Post-Concussion Assessment and Cognitive Testing) neurocognitive testing battery is a widely used tool used for the assessment and management of sports-related concussion. Research on the stability of ImPACT in high school athletes at a 1- and 2-year intervals have been inconsistent, requiring further investigation. We documented 1-, 2-, and 3-year test-retest reliability of repeated ImPACT baseline assessments in a sample of high school athletes, using multiple statistical methods for examining stability. Methods: A total of 1,510 high school athletes completed baseline cognitive testing using online ImPACT test battery at three time periods of approximately 1- (N = 250), 2- (N = 1146), and 3-year (N = 114) intervals. No participant sustained a concussion between assessments. Results: Intraclass correlation coefficients (ICCs) ranged in composite scores from 0.36 to 0.90 and showed little change as intervals between assessments increased. Reliable change indices and regression-based measures (RBMs) examining the test-retest stability demonstrated a lack of significant change in composite scores across the various time intervals, with very few cases (0%-6%) falling outside of 95% confidence intervals. Conclusion: The results suggest ImPACT composites scores remain considerably stability across 1-, 2-, and 3-year test-retest intervals in high school athletes, when considering both ICCs and RBM. Annually ascertaining baseline scores continues to be optimal for ensuring accurate and individualized management of injury for concussed athletes. For instances in which more recent baselines are not available (1-2 years), clinicians should seek to utilize more conservative range estimates in determining the presence of clinically meaningful change in cognitive performance.},
keywords = {assessment, Childhood brain insult, Cognitive Ability, COGNITIVE testing, head injury, HIGH school athletes, Intraclass correlation, Norms/normative studies, Practice effects/reliable change, psychology, STATISTICAL reliability, Test construction, traumatic brain injury},
pubstate = {published},
tppubtype = {article}
}
Samuels, Christina A
Efforts to Prevent Concussions Target Schools Journal Article
In: Education Week, vol. 30, no. 5, pp. 1–11, 2010, ISBN: 02774232.
Abstract | BibTeX | Tags: ATHLETIC trainers, BRAIN -- Concussion, DIAGNOSIS, Health, HIGH school athletes, School sports, Sports injuries in children
@article{Samuels2010,
title = {Efforts to Prevent Concussions Target Schools},
author = {Samuels, Christina A},
isbn = {02774232},
year = {2010},
date = {2010-01-01},
journal = {Education Week},
volume = {30},
number = {5},
pages = {1--11},
publisher = {Editorial Projects in Education Inc.},
abstract = {The article discusses the issue of concussions in high school sports. The article profiles efforts in the U.S. from the National Athletic Trainers' Association, the National Academy of Neuropsychology, and the House Education and Labor Committee to develop treatment and recovery plans for concussed student athletes across the country. Other topics include the risks associated with concussions, the role of athletic trainers in diagnosing concussions, and sports with high risks for concussions.},
keywords = {ATHLETIC trainers, BRAIN -- Concussion, DIAGNOSIS, Health, HIGH school athletes, School sports, Sports injuries in children},
pubstate = {published},
tppubtype = {article}
}
schmidtj uga edu Schmidt, Julianne D; Guskiewicz, Kevin M; Mihalik, Jason P; Blackburn, J Troy; Siegmund, Gunter P; Marshall, Stephen W
Head Impact Magnitude in American High School Football Journal Article
In: Pediatrics, vol. 138, no. 2, pp. 1–9, 2016, ISBN: 00314005.
@article{Schmidt2016,
title = {Head Impact Magnitude in American High School Football},
author = {schmidtj uga edu Schmidt, Julianne D and Guskiewicz, Kevin M and Mihalik, Jason P and Blackburn, J Troy and Siegmund, Gunter P and Marshall, Stephen W},
doi = {10.1542/peds.2015-4231},
isbn = {00314005},
year = {2016},
date = {2016-01-01},
journal = {Pediatrics},
volume = {138},
number = {2},
pages = {1--9},
abstract = {OBJECTIVES: To describe determinants of head impact magnitudes between various play aspects in high school football. METHODS: Thirty-two high school American football players wore Head Impact Telemetry System instrumented helmets to capture head impact magnitude (linear acceleration, rotational acceleration, and Head Impact Technology severity profile [HITsp]). We captured and analyzed video from 13 games (n = 3888 viewable head impacts) to determine the following play aspects: quarter, impact cause, play type, closing distance, double head impact, player's stance, player's action, direction of gaze, athletic readiness, level of anticipation, player stationary, ball possession, receiving ball, and snapping ball. We conducted random intercepts general linear mixed models to assess the differences in head impact magnitude between play aspects ($alpha$ = 0.05). RESULTS: The following aspects resulted in greater head impact magnitude: impacts during the second quarter (HITsp: P= .03); contact with another player (linear, rotational, HITsp: P \< .001); initial head impact when the head is struck twice (linear, rotational, HITsp: P \< .001); longer closing distances, especially when combined with a 3-point stance or when being struck in the head (linear: P = .03); the 2-point stance (linear, rotational, HITsp: P \< .001); and offensive linemen not snapping the ball compared with those snapping the ball (rotational: P = .02, HITsp: P = .02). CONCLUSIONS: Preventing head impacts caused by contact with another player may reduce head impact magnitude in high school football. Rule or coaching changes that reduce collisions after long closing distances, especially when combined with the 3-point stance or when a player is being struck in the head, should be considered. [ABSTRACT FROM AUTHOR]},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Brett, Benjamin L; Smyk, Nathan; Solomon, Gary; Baughman, Brandon C; Schatz, Philip
In: Archives of Clinical Neuropsychology, vol. 31, no. 8, pp. 904–914, 2016, ISBN: 08876177.
@article{Brett2016,
title = {Long-term Stability and Reliability of Baseline Cognitive Assessments in High School Athletes Using ImPACT at 1-, 2-, and 3-year Test-Retest Intervals},
author = {Brett, Benjamin L and Smyk, Nathan and Solomon, Gary and Baughman, Brandon C and Schatz, Philip},
doi = {10.1093/arclin/acw055},
isbn = {08876177},
year = {2016},
date = {2016-01-01},
journal = {Archives of Clinical Neuropsychology},
volume = {31},
number = {8},
pages = {904--914},
abstract = {Objective: The ImPACT (Immediate Post-Concussion Assessment and Cognitive Testing) neurocognitive testing battery is a widely used tool used for the assessment and management of sports-related concussion. Research on the stability of ImPACT in high school athletes at a 1- and 2-year intervals have been inconsistent, requiring further investigation. We documented 1-, 2-, and 3-year test-retest reliability of repeated ImPACT baseline assessments in a sample of high school athletes, using multiple statistical methods for examining stability. Methods: A total of 1,510 high school athletes completed baseline cognitive testing using online ImPACT test battery at three time periods of approximately 1- (N = 250), 2- (N = 1146), and 3-year (N = 114) intervals. No participant sustained a concussion between assessments. Results: Intraclass correlation coefficients (ICCs) ranged in composite scores from 0.36 to 0.90 and showed little change as intervals between assessments increased. Reliable change indices and regression-based measures (RBMs) examining the test-retest stability demonstrated a lack of significant change in composite scores across the various time intervals, with very few cases (0%-6%) falling outside of 95% confidence intervals. Conclusion: The results suggest ImPACT composites scores remain considerably stability across 1-, 2-, and 3-year test-retest intervals in high school athletes, when considering both ICCs and RBM. Annually ascertaining baseline scores continues to be optimal for ensuring accurate and individualized management of injury for concussed athletes. For instances in which more recent baselines are not available (1-2 years), clinicians should seek to utilize more conservative range estimates in determining the presence of clinically meaningful change in cognitive performance.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Samuels, Christina A
Efforts to Prevent Concussions Target Schools Journal Article
In: Education Week, vol. 30, no. 5, pp. 1–11, 2010, ISBN: 02774232.
@article{Samuels2010,
title = {Efforts to Prevent Concussions Target Schools},
author = {Samuels, Christina A},
isbn = {02774232},
year = {2010},
date = {2010-01-01},
journal = {Education Week},
volume = {30},
number = {5},
pages = {1--11},
publisher = {Editorial Projects in Education Inc.},
abstract = {The article discusses the issue of concussions in high school sports. The article profiles efforts in the U.S. from the National Athletic Trainers' Association, the National Academy of Neuropsychology, and the House Education and Labor Committee to develop treatment and recovery plans for concussed student athletes across the country. Other topics include the risks associated with concussions, the role of athletic trainers in diagnosing concussions, and sports with high risks for concussions.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
schmidtj uga edu Schmidt, Julianne D; Guskiewicz, Kevin M; Mihalik, Jason P; Blackburn, J Troy; Siegmund, Gunter P; Marshall, Stephen W
Head Impact Magnitude in American High School Football Journal Article
In: Pediatrics, vol. 138, no. 2, pp. 1–9, 2016, ISBN: 00314005.
Abstract | Links | BibTeX | Tags: ACCELERATION (Mechanics), Biomechanics, DATA analysis -- Software, Football injuries -- Prevention, Head injuries -- Prevention, HIGH school athletes, SAFETY hats, SAMPLING (Statistics), VIDEO recording
@article{Schmidt2016,
title = {Head Impact Magnitude in American High School Football},
author = {schmidtj uga edu Schmidt, Julianne D and Guskiewicz, Kevin M and Mihalik, Jason P and Blackburn, J Troy and Siegmund, Gunter P and Marshall, Stephen W},
doi = {10.1542/peds.2015-4231},
isbn = {00314005},
year = {2016},
date = {2016-01-01},
journal = {Pediatrics},
volume = {138},
number = {2},
pages = {1--9},
abstract = {OBJECTIVES: To describe determinants of head impact magnitudes between various play aspects in high school football. METHODS: Thirty-two high school American football players wore Head Impact Telemetry System instrumented helmets to capture head impact magnitude (linear acceleration, rotational acceleration, and Head Impact Technology severity profile [HITsp]). We captured and analyzed video from 13 games (n = 3888 viewable head impacts) to determine the following play aspects: quarter, impact cause, play type, closing distance, double head impact, player's stance, player's action, direction of gaze, athletic readiness, level of anticipation, player stationary, ball possession, receiving ball, and snapping ball. We conducted random intercepts general linear mixed models to assess the differences in head impact magnitude between play aspects ($alpha$ = 0.05). RESULTS: The following aspects resulted in greater head impact magnitude: impacts during the second quarter (HITsp: P= .03); contact with another player (linear, rotational, HITsp: P \< .001); initial head impact when the head is struck twice (linear, rotational, HITsp: P \< .001); longer closing distances, especially when combined with a 3-point stance or when being struck in the head (linear: P = .03); the 2-point stance (linear, rotational, HITsp: P \< .001); and offensive linemen not snapping the ball compared with those snapping the ball (rotational: P = .02, HITsp: P = .02). CONCLUSIONS: Preventing head impacts caused by contact with another player may reduce head impact magnitude in high school football. Rule or coaching changes that reduce collisions after long closing distances, especially when combined with the 3-point stance or when a player is being struck in the head, should be considered. [ABSTRACT FROM AUTHOR]},
keywords = {ACCELERATION (Mechanics), Biomechanics, DATA analysis -- Software, Football injuries -- Prevention, Head injuries -- Prevention, HIGH school athletes, SAFETY hats, SAMPLING (Statistics), VIDEO recording},
pubstate = {published},
tppubtype = {article}
}
Brett, Benjamin L; Smyk, Nathan; Solomon, Gary; Baughman, Brandon C; Schatz, Philip
In: Archives of Clinical Neuropsychology, vol. 31, no. 8, pp. 904–914, 2016, ISBN: 08876177.
Abstract | Links | BibTeX | Tags: assessment, Childhood brain insult, Cognitive Ability, COGNITIVE testing, head injury, HIGH school athletes, Intraclass correlation, Norms/normative studies, Practice effects/reliable change, psychology, STATISTICAL reliability, Test construction, traumatic brain injury
@article{Brett2016,
title = {Long-term Stability and Reliability of Baseline Cognitive Assessments in High School Athletes Using ImPACT at 1-, 2-, and 3-year Test-Retest Intervals},
author = {Brett, Benjamin L and Smyk, Nathan and Solomon, Gary and Baughman, Brandon C and Schatz, Philip},
doi = {10.1093/arclin/acw055},
isbn = {08876177},
year = {2016},
date = {2016-01-01},
journal = {Archives of Clinical Neuropsychology},
volume = {31},
number = {8},
pages = {904--914},
abstract = {Objective: The ImPACT (Immediate Post-Concussion Assessment and Cognitive Testing) neurocognitive testing battery is a widely used tool used for the assessment and management of sports-related concussion. Research on the stability of ImPACT in high school athletes at a 1- and 2-year intervals have been inconsistent, requiring further investigation. We documented 1-, 2-, and 3-year test-retest reliability of repeated ImPACT baseline assessments in a sample of high school athletes, using multiple statistical methods for examining stability. Methods: A total of 1,510 high school athletes completed baseline cognitive testing using online ImPACT test battery at three time periods of approximately 1- (N = 250), 2- (N = 1146), and 3-year (N = 114) intervals. No participant sustained a concussion between assessments. Results: Intraclass correlation coefficients (ICCs) ranged in composite scores from 0.36 to 0.90 and showed little change as intervals between assessments increased. Reliable change indices and regression-based measures (RBMs) examining the test-retest stability demonstrated a lack of significant change in composite scores across the various time intervals, with very few cases (0%-6%) falling outside of 95% confidence intervals. Conclusion: The results suggest ImPACT composites scores remain considerably stability across 1-, 2-, and 3-year test-retest intervals in high school athletes, when considering both ICCs and RBM. Annually ascertaining baseline scores continues to be optimal for ensuring accurate and individualized management of injury for concussed athletes. For instances in which more recent baselines are not available (1-2 years), clinicians should seek to utilize more conservative range estimates in determining the presence of clinically meaningful change in cognitive performance.},
keywords = {assessment, Childhood brain insult, Cognitive Ability, COGNITIVE testing, head injury, HIGH school athletes, Intraclass correlation, Norms/normative studies, Practice effects/reliable change, psychology, STATISTICAL reliability, Test construction, traumatic brain injury},
pubstate = {published},
tppubtype = {article}
}
Samuels, Christina A
Efforts to Prevent Concussions Target Schools Journal Article
In: Education Week, vol. 30, no. 5, pp. 1–11, 2010, ISBN: 02774232.
Abstract | BibTeX | Tags: ATHLETIC trainers, BRAIN -- Concussion, DIAGNOSIS, Health, HIGH school athletes, School sports, Sports injuries in children
@article{Samuels2010,
title = {Efforts to Prevent Concussions Target Schools},
author = {Samuels, Christina A},
isbn = {02774232},
year = {2010},
date = {2010-01-01},
journal = {Education Week},
volume = {30},
number = {5},
pages = {1--11},
publisher = {Editorial Projects in Education Inc.},
abstract = {The article discusses the issue of concussions in high school sports. The article profiles efforts in the U.S. from the National Athletic Trainers' Association, the National Academy of Neuropsychology, and the House Education and Labor Committee to develop treatment and recovery plans for concussed student athletes across the country. Other topics include the risks associated with concussions, the role of athletic trainers in diagnosing concussions, and sports with high risks for concussions.},
keywords = {ATHLETIC trainers, BRAIN -- Concussion, DIAGNOSIS, Health, HIGH school athletes, School sports, Sports injuries in children},
pubstate = {published},
tppubtype = {article}
}