Montenigro, P H; Alosco, M L; Martin, B M; Daneshvar, D H; Mez, J; Chaisson, C E; Nowinski, C J; Au, R; McKee, A C; Cantu, R C; McClean, M D; Stern, R A; Tripodis, Y
In: Journal of Neurotrauma, vol. 34, no. 2, pp. 328–340, 2017.
Abstract | Links | BibTeX | Tags: behavior, cognition, Concussion, football, long-term impairment, subconcussive impacts
@article{Montenigro2017,
title = {Cumulative Head Impact Exposure Predicts Later-Life Depression, Apathy, Executive Dysfunction, and Cognitive Impairment in Former High School and College Football Players},
author = {Montenigro, P H and Alosco, M L and Martin, B M and Daneshvar, D H and Mez, J and Chaisson, C E and Nowinski, C J and Au, R and McKee, A C and Cantu, R C and McClean, M D and Stern, R A and Tripodis, Y},
doi = {10.1089/neu.2016.4413},
year = {2017},
date = {2017-01-01},
journal = {Journal of Neurotrauma},
volume = {34},
number = {2},
pages = {328--340},
abstract = {The term "repetitive head impacts" (RHI) refers to the cumulative exposure to concussive and subconcussive events. Although RHI are believed to increase risk for later-life neurological consequences (including chronic traumatic encephalopathy), quantitative analysis of this relationship has not yet been examined because of the lack of validated tools to quantify lifetime RHI exposure. The objectives of this study were: 1) to develop a metric to quantify cumulative RHI exposure from football, which we term the "cumulative head impact index" (CHII); 2) to use the CHII to examine the association between RHI exposure and long-term clinical outcomes; and 3) to evaluate its predictive properties relative to other exposure metrics (i.e., duration of play, age of first exposure, concussion history). Participants included 93 former high school and collegiate football players who completed objective cognitive and self-reported behavioral/mood tests as part of a larger ongoing longitudinal study. Using established cutoff scores, we transformed continuous outcomes into dichotomous variables (normal vs. impaired). The CHII was computed for each participant and derived from a combination of self-reported athletic history (i.e., number of seasons, position[s], levels played), and impact frequencies reported in helmet accelerometer studies. A bivariate probit, instrumental variable model revealed a threshold dose-response relationship between the CHII and risk for later-life cognitive impairment (p \< 0.0001), self-reported executive dysfunction (p \< 0.0001), depression (p \< 0.0001), apathy (p = 0.0161), and behavioral dysregulation (p \< 0.0001). Ultimately, the CHII demonstrated greater predictive validity than other individual exposure metrics. Copyright © 2017, Mary Ann Liebert, Inc. 2017.},
keywords = {behavior, cognition, Concussion, football, long-term impairment, subconcussive impacts},
pubstate = {published},
tppubtype = {article}
}
Vestberg, Torbjörn; Reinebo, Gustaf; Maurex, Liselotte; Ingvar, Martin; Petrovic, Predrag
Core executive functions are associated with success in young elite soccer players Journal Article
In: PLoS ONE, vol. 12, no. 2, pp. 1–13, 2017, ISBN: 19326203.
Abstract | Links | BibTeX | Tags: adolescents, Age groups, attention, behavior, Biology and life sciences, cognition, Cognitive neuroscience, Cognitive psychology, Cognitive science, Creativity, Inhibitions, Learning and memory, Memory, Neuroscience, People and places, Population groupings, psychology, recreation, Research Article, Social sciences, Sports, Sports science, working memory
@article{Vestberg2017,
title = {Core executive functions are associated with success in young elite soccer players},
author = {Vestberg, Torbj\"{o}rn and Reinebo, Gustaf and Maurex, Liselotte and Ingvar, Martin and Petrovic, Predrag},
doi = {10.1371/journal.pone.0170845},
isbn = {19326203},
year = {2017},
date = {2017-01-01},
journal = {PLoS ONE},
volume = {12},
number = {2},
pages = {1--13},
publisher = {Public Library of Science},
abstract = {Physical capacity and coordination cannot alone predict success in team sports such as soccer. Instead, more focus has been directed towards the importance of cognitive abilities, and it has been suggested that executive functions (EF) are fundamentally important for success in soccer. However, executive functions are going through a steep development from adolescence to adulthood. Moreover, more complex EF involving manipulation of information (higher level EF) develop later than simple executive functions such as those linked to simple working memory capacity (Core EF). The link between EF and success in young soccer players is therefore not obvious. In the present study we investigated whether EF are associated with success in soccer in young elite soccer players. We performed tests measuring core EF (a demanding working memory task involving a variable n-back task; dWM) and higher level EF (Design Fluency test; DF). Color-Word Interference Test and Trail Making Test were performed on an exploratory level as they contain a linguistic element. The lower level EF test (dWM) was taken from CogStateSport computerized concussion testing and the higher level EF test (DF) was from Delis-Kaplan Executive Function System test battery (D-KEFS). In a group of young elite soccer players (n = 30; aged 12\textendash19 years) we show that they perform better than the norm in both the dWM (+0.49 SD) and DF (+0.86 SD). Moreover, we could show that both dWM and DF correlate with the number of goals the players perform during the season. The effect was more prominent for dWM (r = 0.437) than for DF (r = 0.349), but strongest for a combined measurement (r = 0.550). The effect was still present when we controlled for intelligence, length and age in a partial correlation analysis. Thus, our study suggests that both core and higher level EF may predict success in soccer also in young players. [ABSTRACT FROM AUTHOR]},
keywords = {adolescents, Age groups, attention, behavior, Biology and life sciences, cognition, Cognitive neuroscience, Cognitive psychology, Cognitive science, Creativity, Inhibitions, Learning and memory, Memory, Neuroscience, People and places, Population groupings, psychology, recreation, Research Article, Social sciences, Sports, Sports science, working memory},
pubstate = {published},
tppubtype = {article}
}
Malloch-Brown, K; Mc Fie, S; Brown, J; Viljoen, W; Readhead, C
Concussion return-to-play behaviour of South African Rugby Union (SA Rugby) Youth Week players: a pilot study Journal Article
In: South African Journal of Sports Medicine, vol. 28, no. 2, pp. 43–45, 2016.
Abstract | Links | BibTeX | Tags: behavior, CONCUSSION policies, football, head injury, Injury management, Medical clearance, Rugby football players, SOUTH Africa, Youth
@article{Malloch-Brown2016,
title = {Concussion return-to-play behaviour of South African Rugby Union (SA Rugby) Youth Week players: a pilot study},
author = {Malloch-Brown, K and {Mc Fie}, S and Brown, J and Viljoen, W and Readhead, C},
doi = {10.17159/2078-516X/2016/v28i2a1311},
year = {2016},
date = {2016-01-01},
journal = {South African Journal of Sports Medicine},
volume = {28},
number = {2},
pages = {43--45},
abstract = {Introduction: BokSmart has disseminated Graduated Return-to-Play (GRTP) guidelines for concussions management to all, but specifically coaches, in South Africa. Medical clearance before returning to play (RTP) is poorly adhered to in the GRTP steps. This study explored barriers to compliance with medical clearance prior to RTP. Methods: Players who suffered a concussion during the 2014/2015 South African Rugby Youth Week Tournaments were followed-up telephonically until RTP. Semi-structured interviews were conducted to explore enablers/barriers to seeking/not seeking medical clearance before RTP. Results: Of those who did not seek medical clearance (47%), 80% indicated that the player/parent or coach felt this was unnecessary. Of those who did seek medical clearance, 65% reported they were instructed to do so either by the tournament doctor who diagnosed the injury or by the school coach. Conclusion: Besides coaches, parents and medical doctors have an important influence on players' RTP behaviour. The findings of this pilot study need to be repeated in a larger cohort. [ABSTRACT FROM AUTHOR]},
keywords = {behavior, CONCUSSION policies, football, head injury, Injury management, Medical clearance, Rugby football players, SOUTH Africa, Youth},
pubstate = {published},
tppubtype = {article}
}
Williams, J M; Langdon, J L; McMillan, J L; Buckley, T A
English professional football players concussion knowledge and attitude Journal Article
In: Journal of Sport and Health Science, vol. 5, no. 2, pp. 197–204, 2016.
Abstract | Links | BibTeX | Tags: accuracy, adult, Article, attitude, behavior, Concussion, Concussion recovery, Concussion reporting, controlled study, education program, follow up, football, human, human experiment, injury severity, knowledge, mild traumatic brain injury, normal human, priority journal, psychometry, questionnaire, RISK assessment, RoCKAS, Rosenbaum Concussion Knowledge and Attitudes Surve, scoring system, semi structured interview, Young Adult
@article{Williams2016,
title = {English professional football players concussion knowledge and attitude},
author = {Williams, J M and Langdon, J L and McMillan, J L and Buckley, T A},
doi = {10.1016/j.jshs.2015.01.009},
year = {2016},
date = {2016-01-01},
journal = {Journal of Sport and Health Science},
volume = {5},
number = {2},
pages = {197--204},
abstract = {Background: Concussions are a common pathology in football and multiple misconceptions exist amongst the players and managers. To address these misconceptions, and potentially reduce concussion associated sequela, effective educational interventions need to be developed. However, the current knowledge and attitude status must be ascertained to appropriately develop these interventions. The purpose of this study was to assess the concussion knowledge and attitude of English professional footballers. Methods: Twenty-six participants from one English Football League Championship club completed the study. A mixed methods approach included the Rosenbaum Concussion Knowledge and Attitudes Survey (RoCKAS) and a semi-structured interview. The RoCKAS contains separate knowledge (0-25) and attitude (15-75) scores and was followed by a semi-structured interview consisting of concussion knowledge, attitude, and behavior related questions. Results: The mean score on the RoCKAS knowledge was 16.4 ± 2.9 (range 11-22) and the attitude score was 59.6 ± 8.5 (range 41-71). The interview responses identified inconsistencies between the RoCKAS and the intended behaviors, endorsing multiple concussion misconceptions, and revealed barriers to concussion reporting. Conclusion: The results of this study suggest that Championship Level English footballers have moderate concussion knowledge, safe attitudes, and good concussion symptom recognition when assessed with pen and paper questionnaires. However, within the semi-structured interview many respondents reported unsafe concussion behaviors despite accurately identifying the potential risks. Further, multiple barriers to concussion reporting were identified which included perceived severity of the injury, game situations, and the substitution rule. These findings can help form the foundation of educational interventions to potentially improve concussion reporting behaviors amongst professional footballers. © 2016.},
keywords = {accuracy, adult, Article, attitude, behavior, Concussion, Concussion recovery, Concussion reporting, controlled study, education program, follow up, football, human, human experiment, injury severity, knowledge, mild traumatic brain injury, normal human, priority journal, psychometry, questionnaire, RISK assessment, RoCKAS, Rosenbaum Concussion Knowledge and Attitudes Surve, scoring system, semi structured interview, Young Adult},
pubstate = {published},
tppubtype = {article}
}
Neal, Timothy L; Diamond, Alex B; Goldman, Scott; Liedtka, Karl D; Mathis, Kembra; Morse, Eric D; Putukian, Margot; Quandt, Eric; Ritter, Stacey J; Sullivan, John P; Welzant, Victor
In: Journal of Athletic Training, vol. 50, no. 3, pp. 231–249, 2015, ISBN: 1062-6050.
Links | BibTeX | Tags: alcohol abuse, Anxiety Disorders -- Symptoms, Athletes, ATHLETIC trainers, Attention Deficit Hyperactivity Disorder -- Diagno, Attention Deficit Hyperactivity Disorder -- Sympto, behavior, brain concussion, Bullying, Collaboration, Crisis Intervention, Depression -- Symptoms, Eating Disorders -- Symptoms, Health Promotion -- Methods, High School -- Psychosocial Factors, Mental Disorders -- Education, Mental Disorders -- Risk Factors, Mental Health, Patient History Taking, Physical Examination, Privacy and Confidentiality, Professional Role, Referral and Consultation, Sports Organizations, substance abuse, Suicide -- Risk factors
@article{Neal2015,
title = {Interassociation Recommendations for Developing a Plan to Recognize and Refer Student-Athletes With Psychological Concerns at the Secondary School Level: A Consensus Statement},
author = {Neal, Timothy L and Diamond, Alex B and Goldman, Scott and Liedtka, Karl D and Mathis, Kembra and Morse, Eric D and Putukian, Margot and Quandt, Eric and Ritter, Stacey J and Sullivan, John P and Welzant, Victor},
doi = {10.4085/1062-6050-50.3.03},
isbn = {1062-6050},
year = {2015},
date = {2015-01-01},
journal = {Journal of Athletic Training},
volume = {50},
number = {3},
pages = {231--249},
keywords = {alcohol abuse, Anxiety Disorders -- Symptoms, Athletes, ATHLETIC trainers, Attention Deficit Hyperactivity Disorder -- Diagno, Attention Deficit Hyperactivity Disorder -- Sympto, behavior, brain concussion, Bullying, Collaboration, Crisis Intervention, Depression -- Symptoms, Eating Disorders -- Symptoms, Health Promotion -- Methods, High School -- Psychosocial Factors, Mental Disorders -- Education, Mental Disorders -- Risk Factors, Mental Health, Patient History Taking, Physical Examination, Privacy and Confidentiality, Professional Role, Referral and Consultation, Sports Organizations, substance abuse, Suicide -- Risk factors},
pubstate = {published},
tppubtype = {article}
}
Andrikopoulos, J; Moines, D; Montenigro, P H; Stern, R A
Clinical presentation of chronic traumatic encephalopathy Journal Article
In: Neurology, vol. 83, no. 21, pp. 1991–1993, 2014.
Links | BibTeX | Tags: behavior, Behavioral Symptoms, Brain Injury, Chronic, Chronic Traumatic Encephalopathy alcohol abuse, clinical feature, Cognition Disorders, cognitive defect, etiology, human, Humans, Male, mood, Note, priority journal, prisoner of war, psychosis, traumatic brain injury
@article{Andrikopoulos2014a,
title = {Clinical presentation of chronic traumatic encephalopathy},
author = {Andrikopoulos, J and Moines, D and Montenigro, P H and Stern, R A},
url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84922482119\&partnerID=40\&md5=57625e87083b405a16dda4c0a62ac42e},
year = {2014},
date = {2014-01-01},
journal = {Neurology},
volume = {83},
number = {21},
pages = {1991--1993},
keywords = {behavior, Behavioral Symptoms, Brain Injury, Chronic, Chronic Traumatic Encephalopathy alcohol abuse, clinical feature, Cognition Disorders, cognitive defect, etiology, human, Humans, Male, mood, Note, priority journal, prisoner of war, psychosis, traumatic brain injury},
pubstate = {published},
tppubtype = {article}
}
Montenigro, P H; Alosco, M L; Martin, B M; Daneshvar, D H; Mez, J; Chaisson, C E; Nowinski, C J; Au, R; McKee, A C; Cantu, R C; McClean, M D; Stern, R A; Tripodis, Y
In: Journal of Neurotrauma, vol. 34, no. 2, pp. 328–340, 2017.
@article{Montenigro2017,
title = {Cumulative Head Impact Exposure Predicts Later-Life Depression, Apathy, Executive Dysfunction, and Cognitive Impairment in Former High School and College Football Players},
author = {Montenigro, P H and Alosco, M L and Martin, B M and Daneshvar, D H and Mez, J and Chaisson, C E and Nowinski, C J and Au, R and McKee, A C and Cantu, R C and McClean, M D and Stern, R A and Tripodis, Y},
doi = {10.1089/neu.2016.4413},
year = {2017},
date = {2017-01-01},
journal = {Journal of Neurotrauma},
volume = {34},
number = {2},
pages = {328--340},
abstract = {The term "repetitive head impacts" (RHI) refers to the cumulative exposure to concussive and subconcussive events. Although RHI are believed to increase risk for later-life neurological consequences (including chronic traumatic encephalopathy), quantitative analysis of this relationship has not yet been examined because of the lack of validated tools to quantify lifetime RHI exposure. The objectives of this study were: 1) to develop a metric to quantify cumulative RHI exposure from football, which we term the "cumulative head impact index" (CHII); 2) to use the CHII to examine the association between RHI exposure and long-term clinical outcomes; and 3) to evaluate its predictive properties relative to other exposure metrics (i.e., duration of play, age of first exposure, concussion history). Participants included 93 former high school and collegiate football players who completed objective cognitive and self-reported behavioral/mood tests as part of a larger ongoing longitudinal study. Using established cutoff scores, we transformed continuous outcomes into dichotomous variables (normal vs. impaired). The CHII was computed for each participant and derived from a combination of self-reported athletic history (i.e., number of seasons, position[s], levels played), and impact frequencies reported in helmet accelerometer studies. A bivariate probit, instrumental variable model revealed a threshold dose-response relationship between the CHII and risk for later-life cognitive impairment (p \< 0.0001), self-reported executive dysfunction (p \< 0.0001), depression (p \< 0.0001), apathy (p = 0.0161), and behavioral dysregulation (p \< 0.0001). Ultimately, the CHII demonstrated greater predictive validity than other individual exposure metrics. Copyright © 2017, Mary Ann Liebert, Inc. 2017.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Vestberg, Torbjörn; Reinebo, Gustaf; Maurex, Liselotte; Ingvar, Martin; Petrovic, Predrag
Core executive functions are associated with success in young elite soccer players Journal Article
In: PLoS ONE, vol. 12, no. 2, pp. 1–13, 2017, ISBN: 19326203.
@article{Vestberg2017,
title = {Core executive functions are associated with success in young elite soccer players},
author = {Vestberg, Torbj\"{o}rn and Reinebo, Gustaf and Maurex, Liselotte and Ingvar, Martin and Petrovic, Predrag},
doi = {10.1371/journal.pone.0170845},
isbn = {19326203},
year = {2017},
date = {2017-01-01},
journal = {PLoS ONE},
volume = {12},
number = {2},
pages = {1--13},
publisher = {Public Library of Science},
abstract = {Physical capacity and coordination cannot alone predict success in team sports such as soccer. Instead, more focus has been directed towards the importance of cognitive abilities, and it has been suggested that executive functions (EF) are fundamentally important for success in soccer. However, executive functions are going through a steep development from adolescence to adulthood. Moreover, more complex EF involving manipulation of information (higher level EF) develop later than simple executive functions such as those linked to simple working memory capacity (Core EF). The link between EF and success in young soccer players is therefore not obvious. In the present study we investigated whether EF are associated with success in soccer in young elite soccer players. We performed tests measuring core EF (a demanding working memory task involving a variable n-back task; dWM) and higher level EF (Design Fluency test; DF). Color-Word Interference Test and Trail Making Test were performed on an exploratory level as they contain a linguistic element. The lower level EF test (dWM) was taken from CogStateSport computerized concussion testing and the higher level EF test (DF) was from Delis-Kaplan Executive Function System test battery (D-KEFS). In a group of young elite soccer players (n = 30; aged 12\textendash19 years) we show that they perform better than the norm in both the dWM (+0.49 SD) and DF (+0.86 SD). Moreover, we could show that both dWM and DF correlate with the number of goals the players perform during the season. The effect was more prominent for dWM (r = 0.437) than for DF (r = 0.349), but strongest for a combined measurement (r = 0.550). The effect was still present when we controlled for intelligence, length and age in a partial correlation analysis. Thus, our study suggests that both core and higher level EF may predict success in soccer also in young players. [ABSTRACT FROM AUTHOR]},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Malloch-Brown, K; Mc Fie, S; Brown, J; Viljoen, W; Readhead, C
Concussion return-to-play behaviour of South African Rugby Union (SA Rugby) Youth Week players: a pilot study Journal Article
In: South African Journal of Sports Medicine, vol. 28, no. 2, pp. 43–45, 2016.
@article{Malloch-Brown2016,
title = {Concussion return-to-play behaviour of South African Rugby Union (SA Rugby) Youth Week players: a pilot study},
author = {Malloch-Brown, K and {Mc Fie}, S and Brown, J and Viljoen, W and Readhead, C},
doi = {10.17159/2078-516X/2016/v28i2a1311},
year = {2016},
date = {2016-01-01},
journal = {South African Journal of Sports Medicine},
volume = {28},
number = {2},
pages = {43--45},
abstract = {Introduction: BokSmart has disseminated Graduated Return-to-Play (GRTP) guidelines for concussions management to all, but specifically coaches, in South Africa. Medical clearance before returning to play (RTP) is poorly adhered to in the GRTP steps. This study explored barriers to compliance with medical clearance prior to RTP. Methods: Players who suffered a concussion during the 2014/2015 South African Rugby Youth Week Tournaments were followed-up telephonically until RTP. Semi-structured interviews were conducted to explore enablers/barriers to seeking/not seeking medical clearance before RTP. Results: Of those who did not seek medical clearance (47%), 80% indicated that the player/parent or coach felt this was unnecessary. Of those who did seek medical clearance, 65% reported they were instructed to do so either by the tournament doctor who diagnosed the injury or by the school coach. Conclusion: Besides coaches, parents and medical doctors have an important influence on players' RTP behaviour. The findings of this pilot study need to be repeated in a larger cohort. [ABSTRACT FROM AUTHOR]},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Williams, J M; Langdon, J L; McMillan, J L; Buckley, T A
English professional football players concussion knowledge and attitude Journal Article
In: Journal of Sport and Health Science, vol. 5, no. 2, pp. 197–204, 2016.
@article{Williams2016,
title = {English professional football players concussion knowledge and attitude},
author = {Williams, J M and Langdon, J L and McMillan, J L and Buckley, T A},
doi = {10.1016/j.jshs.2015.01.009},
year = {2016},
date = {2016-01-01},
journal = {Journal of Sport and Health Science},
volume = {5},
number = {2},
pages = {197--204},
abstract = {Background: Concussions are a common pathology in football and multiple misconceptions exist amongst the players and managers. To address these misconceptions, and potentially reduce concussion associated sequela, effective educational interventions need to be developed. However, the current knowledge and attitude status must be ascertained to appropriately develop these interventions. The purpose of this study was to assess the concussion knowledge and attitude of English professional footballers. Methods: Twenty-six participants from one English Football League Championship club completed the study. A mixed methods approach included the Rosenbaum Concussion Knowledge and Attitudes Survey (RoCKAS) and a semi-structured interview. The RoCKAS contains separate knowledge (0-25) and attitude (15-75) scores and was followed by a semi-structured interview consisting of concussion knowledge, attitude, and behavior related questions. Results: The mean score on the RoCKAS knowledge was 16.4 ± 2.9 (range 11-22) and the attitude score was 59.6 ± 8.5 (range 41-71). The interview responses identified inconsistencies between the RoCKAS and the intended behaviors, endorsing multiple concussion misconceptions, and revealed barriers to concussion reporting. Conclusion: The results of this study suggest that Championship Level English footballers have moderate concussion knowledge, safe attitudes, and good concussion symptom recognition when assessed with pen and paper questionnaires. However, within the semi-structured interview many respondents reported unsafe concussion behaviors despite accurately identifying the potential risks. Further, multiple barriers to concussion reporting were identified which included perceived severity of the injury, game situations, and the substitution rule. These findings can help form the foundation of educational interventions to potentially improve concussion reporting behaviors amongst professional footballers. © 2016.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Neal, Timothy L; Diamond, Alex B; Goldman, Scott; Liedtka, Karl D; Mathis, Kembra; Morse, Eric D; Putukian, Margot; Quandt, Eric; Ritter, Stacey J; Sullivan, John P; Welzant, Victor
In: Journal of Athletic Training, vol. 50, no. 3, pp. 231–249, 2015, ISBN: 1062-6050.
@article{Neal2015,
title = {Interassociation Recommendations for Developing a Plan to Recognize and Refer Student-Athletes With Psychological Concerns at the Secondary School Level: A Consensus Statement},
author = {Neal, Timothy L and Diamond, Alex B and Goldman, Scott and Liedtka, Karl D and Mathis, Kembra and Morse, Eric D and Putukian, Margot and Quandt, Eric and Ritter, Stacey J and Sullivan, John P and Welzant, Victor},
doi = {10.4085/1062-6050-50.3.03},
isbn = {1062-6050},
year = {2015},
date = {2015-01-01},
journal = {Journal of Athletic Training},
volume = {50},
number = {3},
pages = {231--249},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Andrikopoulos, J; Moines, D; Montenigro, P H; Stern, R A
Clinical presentation of chronic traumatic encephalopathy Journal Article
In: Neurology, vol. 83, no. 21, pp. 1991–1993, 2014.
@article{Andrikopoulos2014a,
title = {Clinical presentation of chronic traumatic encephalopathy},
author = {Andrikopoulos, J and Moines, D and Montenigro, P H and Stern, R A},
url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84922482119\&partnerID=40\&md5=57625e87083b405a16dda4c0a62ac42e},
year = {2014},
date = {2014-01-01},
journal = {Neurology},
volume = {83},
number = {21},
pages = {1991--1993},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Montenigro, P H; Alosco, M L; Martin, B M; Daneshvar, D H; Mez, J; Chaisson, C E; Nowinski, C J; Au, R; McKee, A C; Cantu, R C; McClean, M D; Stern, R A; Tripodis, Y
In: Journal of Neurotrauma, vol. 34, no. 2, pp. 328–340, 2017.
Abstract | Links | BibTeX | Tags: behavior, cognition, Concussion, football, long-term impairment, subconcussive impacts
@article{Montenigro2017,
title = {Cumulative Head Impact Exposure Predicts Later-Life Depression, Apathy, Executive Dysfunction, and Cognitive Impairment in Former High School and College Football Players},
author = {Montenigro, P H and Alosco, M L and Martin, B M and Daneshvar, D H and Mez, J and Chaisson, C E and Nowinski, C J and Au, R and McKee, A C and Cantu, R C and McClean, M D and Stern, R A and Tripodis, Y},
doi = {10.1089/neu.2016.4413},
year = {2017},
date = {2017-01-01},
journal = {Journal of Neurotrauma},
volume = {34},
number = {2},
pages = {328--340},
abstract = {The term "repetitive head impacts" (RHI) refers to the cumulative exposure to concussive and subconcussive events. Although RHI are believed to increase risk for later-life neurological consequences (including chronic traumatic encephalopathy), quantitative analysis of this relationship has not yet been examined because of the lack of validated tools to quantify lifetime RHI exposure. The objectives of this study were: 1) to develop a metric to quantify cumulative RHI exposure from football, which we term the "cumulative head impact index" (CHII); 2) to use the CHII to examine the association between RHI exposure and long-term clinical outcomes; and 3) to evaluate its predictive properties relative to other exposure metrics (i.e., duration of play, age of first exposure, concussion history). Participants included 93 former high school and collegiate football players who completed objective cognitive and self-reported behavioral/mood tests as part of a larger ongoing longitudinal study. Using established cutoff scores, we transformed continuous outcomes into dichotomous variables (normal vs. impaired). The CHII was computed for each participant and derived from a combination of self-reported athletic history (i.e., number of seasons, position[s], levels played), and impact frequencies reported in helmet accelerometer studies. A bivariate probit, instrumental variable model revealed a threshold dose-response relationship between the CHII and risk for later-life cognitive impairment (p \< 0.0001), self-reported executive dysfunction (p \< 0.0001), depression (p \< 0.0001), apathy (p = 0.0161), and behavioral dysregulation (p \< 0.0001). Ultimately, the CHII demonstrated greater predictive validity than other individual exposure metrics. Copyright © 2017, Mary Ann Liebert, Inc. 2017.},
keywords = {behavior, cognition, Concussion, football, long-term impairment, subconcussive impacts},
pubstate = {published},
tppubtype = {article}
}
Vestberg, Torbjörn; Reinebo, Gustaf; Maurex, Liselotte; Ingvar, Martin; Petrovic, Predrag
Core executive functions are associated with success in young elite soccer players Journal Article
In: PLoS ONE, vol. 12, no. 2, pp. 1–13, 2017, ISBN: 19326203.
Abstract | Links | BibTeX | Tags: adolescents, Age groups, attention, behavior, Biology and life sciences, cognition, Cognitive neuroscience, Cognitive psychology, Cognitive science, Creativity, Inhibitions, Learning and memory, Memory, Neuroscience, People and places, Population groupings, psychology, recreation, Research Article, Social sciences, Sports, Sports science, working memory
@article{Vestberg2017,
title = {Core executive functions are associated with success in young elite soccer players},
author = {Vestberg, Torbj\"{o}rn and Reinebo, Gustaf and Maurex, Liselotte and Ingvar, Martin and Petrovic, Predrag},
doi = {10.1371/journal.pone.0170845},
isbn = {19326203},
year = {2017},
date = {2017-01-01},
journal = {PLoS ONE},
volume = {12},
number = {2},
pages = {1--13},
publisher = {Public Library of Science},
abstract = {Physical capacity and coordination cannot alone predict success in team sports such as soccer. Instead, more focus has been directed towards the importance of cognitive abilities, and it has been suggested that executive functions (EF) are fundamentally important for success in soccer. However, executive functions are going through a steep development from adolescence to adulthood. Moreover, more complex EF involving manipulation of information (higher level EF) develop later than simple executive functions such as those linked to simple working memory capacity (Core EF). The link between EF and success in young soccer players is therefore not obvious. In the present study we investigated whether EF are associated with success in soccer in young elite soccer players. We performed tests measuring core EF (a demanding working memory task involving a variable n-back task; dWM) and higher level EF (Design Fluency test; DF). Color-Word Interference Test and Trail Making Test were performed on an exploratory level as they contain a linguistic element. The lower level EF test (dWM) was taken from CogStateSport computerized concussion testing and the higher level EF test (DF) was from Delis-Kaplan Executive Function System test battery (D-KEFS). In a group of young elite soccer players (n = 30; aged 12\textendash19 years) we show that they perform better than the norm in both the dWM (+0.49 SD) and DF (+0.86 SD). Moreover, we could show that both dWM and DF correlate with the number of goals the players perform during the season. The effect was more prominent for dWM (r = 0.437) than for DF (r = 0.349), but strongest for a combined measurement (r = 0.550). The effect was still present when we controlled for intelligence, length and age in a partial correlation analysis. Thus, our study suggests that both core and higher level EF may predict success in soccer also in young players. [ABSTRACT FROM AUTHOR]},
keywords = {adolescents, Age groups, attention, behavior, Biology and life sciences, cognition, Cognitive neuroscience, Cognitive psychology, Cognitive science, Creativity, Inhibitions, Learning and memory, Memory, Neuroscience, People and places, Population groupings, psychology, recreation, Research Article, Social sciences, Sports, Sports science, working memory},
pubstate = {published},
tppubtype = {article}
}
Malloch-Brown, K; Mc Fie, S; Brown, J; Viljoen, W; Readhead, C
Concussion return-to-play behaviour of South African Rugby Union (SA Rugby) Youth Week players: a pilot study Journal Article
In: South African Journal of Sports Medicine, vol. 28, no. 2, pp. 43–45, 2016.
Abstract | Links | BibTeX | Tags: behavior, CONCUSSION policies, football, head injury, Injury management, Medical clearance, Rugby football players, SOUTH Africa, Youth
@article{Malloch-Brown2016,
title = {Concussion return-to-play behaviour of South African Rugby Union (SA Rugby) Youth Week players: a pilot study},
author = {Malloch-Brown, K and {Mc Fie}, S and Brown, J and Viljoen, W and Readhead, C},
doi = {10.17159/2078-516X/2016/v28i2a1311},
year = {2016},
date = {2016-01-01},
journal = {South African Journal of Sports Medicine},
volume = {28},
number = {2},
pages = {43--45},
abstract = {Introduction: BokSmart has disseminated Graduated Return-to-Play (GRTP) guidelines for concussions management to all, but specifically coaches, in South Africa. Medical clearance before returning to play (RTP) is poorly adhered to in the GRTP steps. This study explored barriers to compliance with medical clearance prior to RTP. Methods: Players who suffered a concussion during the 2014/2015 South African Rugby Youth Week Tournaments were followed-up telephonically until RTP. Semi-structured interviews were conducted to explore enablers/barriers to seeking/not seeking medical clearance before RTP. Results: Of those who did not seek medical clearance (47%), 80% indicated that the player/parent or coach felt this was unnecessary. Of those who did seek medical clearance, 65% reported they were instructed to do so either by the tournament doctor who diagnosed the injury or by the school coach. Conclusion: Besides coaches, parents and medical doctors have an important influence on players' RTP behaviour. The findings of this pilot study need to be repeated in a larger cohort. [ABSTRACT FROM AUTHOR]},
keywords = {behavior, CONCUSSION policies, football, head injury, Injury management, Medical clearance, Rugby football players, SOUTH Africa, Youth},
pubstate = {published},
tppubtype = {article}
}
Williams, J M; Langdon, J L; McMillan, J L; Buckley, T A
English professional football players concussion knowledge and attitude Journal Article
In: Journal of Sport and Health Science, vol. 5, no. 2, pp. 197–204, 2016.
Abstract | Links | BibTeX | Tags: accuracy, adult, Article, attitude, behavior, Concussion, Concussion recovery, Concussion reporting, controlled study, education program, follow up, football, human, human experiment, injury severity, knowledge, mild traumatic brain injury, normal human, priority journal, psychometry, questionnaire, RISK assessment, RoCKAS, Rosenbaum Concussion Knowledge and Attitudes Surve, scoring system, semi structured interview, Young Adult
@article{Williams2016,
title = {English professional football players concussion knowledge and attitude},
author = {Williams, J M and Langdon, J L and McMillan, J L and Buckley, T A},
doi = {10.1016/j.jshs.2015.01.009},
year = {2016},
date = {2016-01-01},
journal = {Journal of Sport and Health Science},
volume = {5},
number = {2},
pages = {197--204},
abstract = {Background: Concussions are a common pathology in football and multiple misconceptions exist amongst the players and managers. To address these misconceptions, and potentially reduce concussion associated sequela, effective educational interventions need to be developed. However, the current knowledge and attitude status must be ascertained to appropriately develop these interventions. The purpose of this study was to assess the concussion knowledge and attitude of English professional footballers. Methods: Twenty-six participants from one English Football League Championship club completed the study. A mixed methods approach included the Rosenbaum Concussion Knowledge and Attitudes Survey (RoCKAS) and a semi-structured interview. The RoCKAS contains separate knowledge (0-25) and attitude (15-75) scores and was followed by a semi-structured interview consisting of concussion knowledge, attitude, and behavior related questions. Results: The mean score on the RoCKAS knowledge was 16.4 ± 2.9 (range 11-22) and the attitude score was 59.6 ± 8.5 (range 41-71). The interview responses identified inconsistencies between the RoCKAS and the intended behaviors, endorsing multiple concussion misconceptions, and revealed barriers to concussion reporting. Conclusion: The results of this study suggest that Championship Level English footballers have moderate concussion knowledge, safe attitudes, and good concussion symptom recognition when assessed with pen and paper questionnaires. However, within the semi-structured interview many respondents reported unsafe concussion behaviors despite accurately identifying the potential risks. Further, multiple barriers to concussion reporting were identified which included perceived severity of the injury, game situations, and the substitution rule. These findings can help form the foundation of educational interventions to potentially improve concussion reporting behaviors amongst professional footballers. © 2016.},
keywords = {accuracy, adult, Article, attitude, behavior, Concussion, Concussion recovery, Concussion reporting, controlled study, education program, follow up, football, human, human experiment, injury severity, knowledge, mild traumatic brain injury, normal human, priority journal, psychometry, questionnaire, RISK assessment, RoCKAS, Rosenbaum Concussion Knowledge and Attitudes Surve, scoring system, semi structured interview, Young Adult},
pubstate = {published},
tppubtype = {article}
}
Neal, Timothy L; Diamond, Alex B; Goldman, Scott; Liedtka, Karl D; Mathis, Kembra; Morse, Eric D; Putukian, Margot; Quandt, Eric; Ritter, Stacey J; Sullivan, John P; Welzant, Victor
In: Journal of Athletic Training, vol. 50, no. 3, pp. 231–249, 2015, ISBN: 1062-6050.
Links | BibTeX | Tags: alcohol abuse, Anxiety Disorders -- Symptoms, Athletes, ATHLETIC trainers, Attention Deficit Hyperactivity Disorder -- Diagno, Attention Deficit Hyperactivity Disorder -- Sympto, behavior, brain concussion, Bullying, Collaboration, Crisis Intervention, Depression -- Symptoms, Eating Disorders -- Symptoms, Health Promotion -- Methods, High School -- Psychosocial Factors, Mental Disorders -- Education, Mental Disorders -- Risk Factors, Mental Health, Patient History Taking, Physical Examination, Privacy and Confidentiality, Professional Role, Referral and Consultation, Sports Organizations, substance abuse, Suicide -- Risk factors
@article{Neal2015,
title = {Interassociation Recommendations for Developing a Plan to Recognize and Refer Student-Athletes With Psychological Concerns at the Secondary School Level: A Consensus Statement},
author = {Neal, Timothy L and Diamond, Alex B and Goldman, Scott and Liedtka, Karl D and Mathis, Kembra and Morse, Eric D and Putukian, Margot and Quandt, Eric and Ritter, Stacey J and Sullivan, John P and Welzant, Victor},
doi = {10.4085/1062-6050-50.3.03},
isbn = {1062-6050},
year = {2015},
date = {2015-01-01},
journal = {Journal of Athletic Training},
volume = {50},
number = {3},
pages = {231--249},
keywords = {alcohol abuse, Anxiety Disorders -- Symptoms, Athletes, ATHLETIC trainers, Attention Deficit Hyperactivity Disorder -- Diagno, Attention Deficit Hyperactivity Disorder -- Sympto, behavior, brain concussion, Bullying, Collaboration, Crisis Intervention, Depression -- Symptoms, Eating Disorders -- Symptoms, Health Promotion -- Methods, High School -- Psychosocial Factors, Mental Disorders -- Education, Mental Disorders -- Risk Factors, Mental Health, Patient History Taking, Physical Examination, Privacy and Confidentiality, Professional Role, Referral and Consultation, Sports Organizations, substance abuse, Suicide -- Risk factors},
pubstate = {published},
tppubtype = {article}
}
Andrikopoulos, J; Moines, D; Montenigro, P H; Stern, R A
Clinical presentation of chronic traumatic encephalopathy Journal Article
In: Neurology, vol. 83, no. 21, pp. 1991–1993, 2014.
Links | BibTeX | Tags: behavior, Behavioral Symptoms, Brain Injury, Chronic, Chronic Traumatic Encephalopathy alcohol abuse, clinical feature, Cognition Disorders, cognitive defect, etiology, human, Humans, Male, mood, Note, priority journal, prisoner of war, psychosis, traumatic brain injury
@article{Andrikopoulos2014a,
title = {Clinical presentation of chronic traumatic encephalopathy},
author = {Andrikopoulos, J and Moines, D and Montenigro, P H and Stern, R A},
url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84922482119\&partnerID=40\&md5=57625e87083b405a16dda4c0a62ac42e},
year = {2014},
date = {2014-01-01},
journal = {Neurology},
volume = {83},
number = {21},
pages = {1991--1993},
keywords = {behavior, Behavioral Symptoms, Brain Injury, Chronic, Chronic Traumatic Encephalopathy alcohol abuse, clinical feature, Cognition Disorders, cognitive defect, etiology, human, Humans, Male, mood, Note, priority journal, prisoner of war, psychosis, traumatic brain injury},
pubstate = {published},
tppubtype = {article}
}