Implementation of the 2017 Berlin Concussion in Sport Group Consensus Statement in contact and collision sports: a joint position statement from 11 national and international sports organisations

Relationship of athletic and academic identity to concussion reporting intentions

BACKGROUND

Understanding concussed athletes' motivations for reporting concussion symptoms is important for health care professionals who are charged with the care, management, and prevention of future injury.

OBJECTIVES

To examine if athletic and academic identity predict concussion symptom reporting intentions above and beyond traditional socio-cognitive predictors.

DESIGN

Cross-sectional study using self-report measures during the 2016 collegiate football season.

METHOD

In a sample of National Collegiate Athletic Association (NCAA) Division I American football athletes (N = 205) we examined the relationship of athletic and academic identity with three indices of symptom reporting behavior: reporting during a game, reporting 24 h after a game, and reporting on behalf of a teammate. We used descriptive statistical analyses, correlations, and linear regression to examine hypotheses.

RESULTS

Controlling for traditional predictors, athletic identity was associated with a lower likelihood to report symptoms during a game (β = -0.22, t = -3.28, p < .001) or within 24 h (β = -0.28, t = -4.12, p < .001). Academic identity was positively associated with reporting intentions during a game (β = 0.12, t = 1.68, p < .05), 24 h later (β = 0.13, t = 1.85, p < .05), and on behalf of a teammate (β = 0.22, t = -3.36, p < .001).

CONCLUSIONS

Athletic and academic identities offer additional insight into athletes' motivation for concussion symptom reporting intentions, above and beyond traditional socio-cognitive predictors. Discussion focuses on the benefit of incorporating these important self-identities into educational health interventions to improve their impact.

An experimental study of two forms of concussion advice on planned physical activity

Background and aims

Best practice management for medically cleared concussion is to commence a graded return to activity, as tolerated, and within 24–48 h of the injury. Patients may encounter this or other advice if they search the Internet, or when they are discharged from care. It is not yet known how patients would interpret this advice, particularly for specific activities. This study compared the effect of two forms of concussion advice on physical activity plans. It was expected that compared to the advice to gradually return to activity, the advice to ‘rest’ would lead to reduced activity plans.

Methods

Concussion simulators received the generic advice to undertake 1 week of (i) rest (no physical activity [NPA], n = 115) or (ii) graded physical activity (GPA, n = 104). Activity plans were recorded using items from the Mild Traumatic Brain Injury Rest-Activity Questionnaire (MTBI-RAQ).

Results

There was a significant group difference in activity plans (NPA < GPA, total score and for all MTBI-RAQ items, p’s ≤ 0.001, medium-to-large effects). The average NPA response was for a significant reduction from pre-injury for 14 activities, with no planned change for 2 activities (walking, household chores). In the GPA group, there were plans to reduce (nitems = 7), continue (nitems = 5) or increase activities (nitems = 4; e.g., swimming). Both groups proposed to decrease ‘high-risk’ activities (e.g., heavy lifting).

Conclusion

As expected, there was a significant effect of the type of advice on physical activity plans. Compared to the GPA advice, the NPA advice led to a significant reduction of planned physical activity. If concussed patients seek or receive advice that recommends NPA, it may prompt activity plans that are unnecessarily restrictive. If GPA advice is given, it leads to varied plans, with fewer restrictions overall, and avoidance of higher risk physical activities. Generic GPA advice has the potential to facilitate active recovery for concussion; however, patients would still likely benefit from a professional consultation about their plan and support to safely implement it, and this should be investigated in future research.

Sports-related concussion (SRC) assessment in road cycling: a systematic review and call to action

Background

Sports-related concussion (SRC) is a recognised risk in road cycling and can have serious health consequences. Recent high-profile cases of professional road cyclists continuing to participate in races despite suffering obvious SRC have highlighted the difficulties in assessing SRC within road cycling.

Purpose

To undertake a systematic review of the literature on SRC assessment in road cycling.

Study design

Systematic review.

Methods

Literature describing SRC assessment in road cycling was identified by searching MEDLINE, EMBASE, PsycINFO and Web of Science. Two reviewers independently screened titles and abstracts for eligibility and a qualitative analysis was undertaken of included studies.

Results

From 94 studies identified, two were included for review. Gordon et al describe the presentation of a single case of paediatric concussion following a cycling crash. They highlight the utility of SRC evaluation using the Sport Concussion Assessment Tool (SCAT) as well as the importance of a stepwise return-to-play protocol. Greve and Modabber discuss a number of traumatic brain injuries that occurred during the 2011 road cycling season and, as a minimum, call for riders to be withdrawn from competition following loss of consciousness or amnesia. Both studies are at high risk of bias and of low quality.

Conclusion

Road cycling poses unique challenges for the assessment of SRC. This review illustrates the lack of published evidence to advise effective means of SRC assessment within road cycling. The Union Cycliste Internationale (UCI) regulations advise the use of SCAT-5 for concussion assessment but this tool is impractical, requiring modification for use in road cycling. We would like to call on the UCI to hold a consensus meeting to establish an evidence-based SRC assessment protocol and return-to-riding protocol for road cycling.

Proceedings from the Ice Hockey Summit III: Action on Concussion

The Ice Hockey Summit III provided updated scientific evidence on concussions in hockey to inform these five objectives: 1) describe sport-related concussion (SRC) epidemiology, 2) classify prevention strategies, 3) define objective, diagnostic tests, 4) identify treatment, and 5) integrate science and clinical care into prioritized action plans and policy. Our action plan evolved from 40 scientific presentations. The 155 attendees (physicians, athletic trainers, physical therapists, nurses, neuropsychologists, scientists, engineers, coaches, and officials) voted to prioritize these action items in the final Summit session. 1) Establish a national and international hockey data base for SRC at all levels, 2) eliminate body checking in Bantam youth hockey games, 3) expand a behavior modification program (Fair Play) to all youth hockey levels, 4) enforce game ejection penalties for fighting in Junior A and professional hockey leagues, 5) establish objective tests to diagnose concussion at point of care (POC), and 6) mandate baseline testing to improve concussion diagnosis for all age groups. Expedient implementation of the Summit III prioritized action items is necessary to reduce the risk, severity, and consequences of concussion in the sport of ice hockey.

An experimental study of the effect on activity intentions of postconcussion recovery advice

This study tested the effect of issuing return-to-activity advice on activity intentions at Day 2 and Day 10 days post simulated mild traumatic brain injury. One hundred and twenty-eight volunteers were randomly allocated to one of two groups who received ( n =  65) or did not receive standardized post-injury advice ( n =  63). To prime the simulation, the participants read a mild traumatic brain injury vignette about a person who is concussed while playing sport. Then the participants role-played the injured person and reported activity intentions for three activity types (cognitive, physical and restful) twice, once for each time frame (i.e. Day 2 and Day 10). The advice was to rest for the first 24–48 h and then gradually resume normal activities. There was no significant group by activity-type interaction ( p > .05) at Day 2. When both time frames were considered, there was no significant group × time frame interaction for any activity type or any item, except for an increase in non-manual (clerical) work and weight training at Day 10 compared to Day 2 in the group with the advice. In general, the intentions for all activity types were consistent with the recovery advice (i.e., rest then increasing activity), even when the advice was not given. However, at Day 10, cognitive and physical activity levels were still expected to be lower than usual (pre-injury), and many participants were uncertain about the concept of cognitive rest. These factors, along with individual patient circumstances, should be taken into account in rehabilitation planning.

Anger Weakens Behavioral Inhibition Selectively in Contact Athletes

Studies have increasingly found that the aggression level of contact athletes is higher than that of non-athletes. Given that higher aggression levels are associated with worse behavioral inhibition and that athletes show better behavioral inhibition than non-athletes, it is unclear why contact athletes would exhibit higher aggression levels. Emotion, especially anger, is an important factor in the generation of aggressive behavior, and anger has been shown to affect behavioral inhibition. Thus, the present study examined the influence of anger on behavioral inhibition in contact athletes. An implicit emotional Go/No-go task was used that contained 50 anger-associated words and 50 neutral words as stimuli. Participants were asked to execute a key press depending on the explicit color of word and to ignore any (implicit) emotional information associated with the word. The results showed a significant interaction in performance accuracy on the No-go task between emotion (i.e., anger-associated words versus neutral words) and group (athlete versus non-athlete). The performance accuracy of the contact athletes on anger-associated stimuli was significantly lower than that for neutral stimuli. Evoked delta and theta oscillations were analyzed at the time windows 200–600 and 200–400 ms respectively in both groups. A time-frequency analysis indicated a significant interaction between group, emotion and task for both evoked delta and theta oscillations. Post hoc analyses showed that stronger evoked delta and theta oscillations were evoked during the presentation of anger-associated stimuli compared with neutral stimuli on the No-go task in athletes. By contrast, no other significant effect was found in the control group or between the control and athlete groups. These results indicate that time-frequency analysis can effectively distinguish conventional ERP components and that implicit anger significantly weakens behavioral inhibition in contact athletes but not in non-athletes.

Imaging findings after acute sport-related concussion in American football players: A systematic review

Sport-related concussion (SRC) has emerged as a major public health problem. The results of brain imaging studies following SRC have raised questions about long-term neurologic health, but the clinical implications of these findings remain unknown. A systematic review of brain imaging findings after SRC was performed utilizing the following inclusion criteria: football players, brain imaging within 6 months of SRC, and sample size >5. Studies were assessed for: 1) methodology, 2) imaging outcomes, and 3) number of positive statistical comparisons. Imaging was classified as immediate (≤1 week post-injury) or subacute (>1 week to 6 months post-injury). Eleven studies met inclusion criteria. Eight of the 11 studies conducted a total of 809 comparisons of brain function, of which 149 (18%) were statistically significant. Nine of the 11 studies (82%) reported positive immediate findings, but were more likely to be subject to recall bias (86% vs. 0%) and to lack baseline advanced brain imaging (78% vs. 50%) than negative studies. Only 3 of 9 studies that reported subacute findings (33%) reported positive results, and these positive studies were also more likely to be subject to recall bias (100% vs. 40%) and to lack baseline advanced brain imaging (100% vs. 67%) than negative studies. The results of the study demonstrate the transitory nature of positive imaging findings and methodological limitations that complicate study interpretation. Further research is required to correlate imaging findings with clinical outcomes.

2018 International Consensus Statement on Golf and Health to guide action by people, policymakers and the golf industry

Scientific and public interest relating to golf and health has increased recently. Players, potential players, the golf industry and facilities, and decision makers will benefit from a better understanding of how to realise potential health benefits and minimise health issues related to golf. We outline an International Consensus on Golf and Health. A systematic literature review informed the development of a survey. Utilising modified Delphi methods, an expert panel of 25 persons including public health and golf industry leaders, took part in serial surveys providing feedback on suggested items, and proposing new items. Predefined criteria for agreement determined whether each item was included within each survey round and in the final consensus. The working group identified 79 scientifically supportable statement items from literature review and discussions. Twenty-five experts (100%) completed all three rounds of surveys, rating each item, and suggesting modifications and/or new items for inclusion in subsequent surveys. After three rounds, 83 items achieved consensus with each with >75% agreement and <10% disagreement. These items are included in the final International Consensus on Golf and Health. The final consensus presented here can inform scientific knowledge, and action plans for (1) golfers and potential golfers, (2) golf facilities and the golf industry, and (3) policy and decision makers external to golf. These outputs, if widely adopted, will contribute to an improved understanding of golf and health, and aid these groups in making evidence-informed decisions to improve health and well-being.