Head impacts in semiprofessional male Soccer players: a prospective video analysis over one season of competitive games

Brain Injury ◽  
2020 ◽  
Vol 34 (12) ◽  
pp. 1685-1690
Author(s):  
Hélène Cassoudesalle ◽  
Maxime Bildet ◽  
Hervé Petit ◽  
Patrick Dehail
Keyword(s):  
Video Analysis ◽  
Soccer Players ◽  
Head Impacts ◽  
Competitive Games

Video Analysis of Head Impact Sensor Data From Adolescent Soccer Players

2018 ◽  
Vol 99 (11) ◽  
pp. e152
Author(s):  
Colin Huber ◽  
Declan Patton ◽  
Kayleigh Jenkins ◽  
Kristy Arbogast
Keyword(s):  
Video Analysis ◽  
Head Impact ◽  
Sensor Data ◽  
Soccer Players

scholarly journals The Reliability of Transcranial Magnetic Stimulation-Derived Corticomotor Inhibition as a Brain Health Evaluation Tool in Soccer Players

2022 ◽  
Vol 8 (1) ◽  
Author(s):  
Thomas G. Di Virgilio ◽  
Magdalena Ietswaart ◽  
Ragul Selvamoorthy ◽  
Angus M. Hunter
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Magnetic Stimulation ◽  
Rectus Femoris ◽  
Corticospinal Excitability ◽  
Soccer Players ◽  
Group Differences ◽  
Evaluation Tool ◽  
Brain Health ◽  
Actual Measurement ◽  
Head Impacts

Abstract Background The suitability of corticomotor inhibition and corticospinal excitability to measure brain health outcomes and recovery of sport-related head impact (concussion and subconcussion) depends on good inter-day reliability, which is evaluated in this study. Transcranial magnetic stimulation (TMS) reliability in soccer players is assessed by comparing soccer players, for whom reliability on this measure may be reduced due to exposure to head impacts, to generally active individuals not engaged in contact sport. Methods TMS-derived corticomotor inhibition and corticospinal excitability were recorded from the rectus femoris muscle during two testing sessions, spaced 1–2 weeks apart in 19 soccer players (SOC—age 22 ± 3 years) and 20 generally active (CON—age 24 ± 4 years) healthy volunteers. Inter-day reliability between the two time points was quantified by using intra-class correlation coefficients (ICC). Intra-group reliability and group differences on actual measurement values were also explored. Results Good inter-day reliability was evident for corticomotor inhibition (ICCSOC = 0.61; ICCCON = 0.70) and corticospinal excitability (ICCSOC = 0.59; ICCCON = 0.70) in both generally active individuals and soccer players routinely exposed to sport-related head impacts. Corticomotor inhibition showed lower coefficients of variation than excitability for both groups (InhibSOC = 15.2%; InhibCON = 9.7%; ExcitabSOC = 41.6%; ExcitabCON = 39.5%). No group differences between soccer players and generally active individuals were found on the corticomotor inhibition value (p > 0.05), but levels of corticospinal excitability were significantly lower in soccer players (45.1 ± 20.8 vs 85.4 ± 6.2%Mmax, p < 0.0001). Corticomotor inhibition also showed excellent inter-rater reliability (ICC = 0.87). Conclusions Corticomotor inhibition and corticospinal excitability are stable and maintain good degrees of reliability when assessed over different days in soccer players, despite their routine exposure to head impacts. However, based on intra-group reliability and group differences of the levels of excitability, we conclude that corticomotor inhibition is best suited for the evaluation of neuromuscular alterations associated with head impacts in contact sports.

scholarly journals Video Analysis and Verification of Direct Head Impacts Recorded by Wearable Sensors in Junior Rugby League Players

2020 ◽  
Author(s):  
Lauchlan John Carey ◽  
Douglas P Terry ◽  
Andrew McIntosh ◽  
Peter Stanwell ◽  
Grant L Iverson ◽  
...  
Keyword(s):  
Video Analysis ◽  
Wearable Sensors ◽  
Case Series ◽  
Rugby League ◽  
Secondary Source ◽  
Head Impacts ◽  
Youth Athletes ◽  
Video Review ◽  
Direct Head ◽  
Elite Level

Abstract Background: Rugby League is a high-intensity collision sport that carries a risk of concussion. Youth athletes are considered to be more vulnerable and take longer to recover from concussion than adult athletes. Purpose: To review head impact events in elite level junior representative rugby league and to verify and analyze x-patchTM recorded impacts via video analysis.Study Design: Observational case series.Methods: The x-patchTM was used on twenty-one adolescent players (thirteen forwards and eight backs) during a 2017 junior representative rugby league competition. Game day footage, recorded by a trained videographer from a single camera, was synchronized with accelerometer timestamps. Impacts were double verified by video review. Impact rates, playing characteristics, and game play situations were described.Results: The x-patchTM recorded 624 impacts 20g between game start and finish, of which 564 (90.4%) were verified on video. Upon video review, 413 (73.2%) of all verified impacts 20g where determined to be direct head impacts. Direct head impacts 20g occurred at a rate of 5.2 impacts per game hour; 7.6 for forwards and 3.0 for backs (range=0-18.2). A defender’s arm directly impacting the head of the ball carrier was the most common event, accounting for 21.3% (n=120) of all impacts, and 46.7% of all “hit-up” impacts. There were no medically diagnosed concussions during the competition.Conclusion: The majority (90.4%) of impacts 20g recorded by the x-patchTM sensor were verified by video. Double verification of direct head impacts in addition to cross-verification of sensor recorded impacts using a secondary source such as synchronized video review can be used to ensure accuracy and validation of data.

scholarly journals Player-Driven Video Analysis to Enhance Reflective Soccer Practice in Talent Development

2018 ◽  
Vol 8 (2) ◽  
pp. 29-43 ◽  
Author(s):  
Anders Hjort ◽  
Kristoffer Henriksen ◽  
Lars Elbæk
Keyword(s):  
Video Analysis ◽  
Role Models ◽  
Deliberate Practice ◽  
Reflective Learning ◽  
Soccer Players ◽  
Youth Soccer ◽  
Analysis Process ◽  
Analysis Platform ◽  
Analytical Platforms ◽  
Game Performance

In the present article, we investigate the introduction of a cloud-based video analysis platform called Player Universe (PU). Video analysis is not a new performance-enhancing element in sports, but PU is innovative in how it facilitates reflective learning. Video analysis is executed in the PU platform by involving the players in the analysis process, in the sense that they are encouraged to tag game actions in video-documented soccer matches. Following this, players can get virtual feedback from their coach. Findings show that PU can improve youth soccer players' reflection skills through consistent video analyses and tagging; coaches are important as role models and providers of feedback; and that the use of the platform primarily stimulated deliberate practice activities. PU can be seen as a source of inspiration for soccer players and clubs as to how analytical platforms can motivate and enhance reflective learning for better in-game performance.

Collegiate women's soccer players suffer greater cumulative head impacts than their high school counterparts

2015 ◽  
Vol 48 (13) ◽  
pp. 3720-3723 ◽  
Author(s):  
Emily McCuen ◽  
Diana Svaldi ◽  
Katherine Breedlove ◽  
Nicole Kraz ◽  
Brian Cummiskey ◽  
...  
Keyword(s):  
High School ◽  
Soccer Players ◽  
Head Impacts ◽  
Women's Soccer

scholarly journals Heading Frequency Is More Strongly Related to Cognitive Performance Than Unintentional Head Impacts in Amateur Soccer Players

2018 ◽  
Vol 9 ◽  
Author(s):  
Walter F. Stewart ◽  
Namhee Kim ◽  
Chloe Ifrah ◽  
Martin Sliwinski ◽  
Molly E. Zimmerman ◽  
...  
Keyword(s):  
Cognitive Performance ◽  
Soccer Players ◽  
Head Impacts

scholarly journals Video Analysis and Verification of Direct Head Impacts Recorded by Wearable Sensors in Junior Rugby League Players

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Lauchlan Carey ◽  
Douglas P. Terry ◽  
Andrew S. McIntosh ◽  
Peter Stanwell ◽  
Grant L. Iverson ◽  
...  
Keyword(s):  
Video Analysis ◽  
Wearable Sensors ◽  
Case Series ◽  
Rugby League ◽  
Secondary Source ◽  
Head Impacts ◽  
Youth Athletes ◽  
Video Review ◽  
Direct Head ◽  
Elite Level

Abstract Background Rugby league is a high-intensity collision sport that carries a risk of concussion. Youth athletes are considered to be more vulnerable and take longer to recover from concussion than adult athletes. Purpose To review head impact events in elite-level junior representative rugby league and to verify and describe characteristics of X-patchTM-recorded impacts via video analysis. Study Design Observational case series. Methods The X-patchTM was used on twenty-one adolescent players (thirteen forwards and eight backs) during a 2017 junior representative rugby league competition. Game-day footage, recorded by a trained videographer from a single camera, was synchronised with X-patchTM-recorded timestamped events. Impacts were double verified by video review. Impact rates, playing characteristics, and gameplay situations were described. Results The X-patchTM-recorded 624 impacts ≥ 20g between game start and finish, of which 564 (90.4%) were verified on video. Upon video review, 413 (73.2%) of all verified impacts ≥ 20g where determined to be direct head impacts. Direct head impacts ≥ 20g occurred at a rate of 5.2 impacts per game hour; 7.6 for forwards and 3.0 for backs (range = 0–18.2). A defender’s arm directly impacting the head of the ball carrier was the most common event, accounting for 21.3% (n = 120) of all impacts, and 46.7% of all “hit-up” impacts. There were no medically diagnosed concussions during the competition. Conclusion The majority (90.4%) of head impacts ≥ 20g recorded by the X-patchTM sensor were verified by video. Double verification of direct head impacts in addition to cross-verification of sensor-recorded impacts using a secondary source such as synchronised video review can be used to ensure accuracy and validation of data.

scholarly journals Reduced cognitive resiliency ofattention-deficit/hyperactivity disorder against subconcussive head impacts

Neurology ◽  
2019 ◽  
Vol 93 (14 Supplement 1) ◽  
pp. S29.1-S29
Author(s):  
Madeleine Nowak ◽  
Patrick Quinn ◽  
Keisuke Ejima ◽  
Timothy Mickelborough ◽  
Sharlene Newman ◽  
...  
Keyword(s):  
Verbal Memory ◽  
Visual Memory ◽  
Neurocognitive Function ◽  
Significant Decline ◽  
Cognitive Testing ◽  
Soccer Players ◽  
Post Intervention ◽  
Significant Group ◽  
Head Impacts ◽  
Hyperactivity Disorder

ObjectiveThe purpose of this study was to determine the subconcussive head impacts (SHI) effects on neurocognitive function in individuals diagnosed with attention-deficit/hyperactivity disorder (ADHD).BackgroundAthletes diagnosed with ADHD have a heightened risk (2 to 4-fold) for sustaining concussion. However, their response to repetitive SHI remain unclear.Design/MethodsIn this case-control intervention study, 17 soccer players clinically diagnosed with ADHD who take their prescribed medication daily, were assigned a heading intervention (ADHD-Heading group),individuals who met the ADHD criteria but were non-soccer players, were assigned into a kicking group, (ADHD-Kicking group, n = 15). Whereas 34 soccer players without ADHD diagnosis were randomized into either a heading or kicking intervention, yielding Non-ADHD-Heading group (n = 17) or Non-ADHD-Kicking group (n = 17). To implement SHI, the heading groups executed 10 headers with a standard soccer ball projected at a velocity of 25 mph (equivalent to a long throw-in) over 10 minutes by a JUGS soccer machine, while the kicking groups performed 10 kicks. Neurocognitive function was measured via the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) at pre-intervention baseline, 0h, 2h, and 24h post-intervention.ResultsThe vulnerability to SHI was notable in subjects diagnosed with ADHD particularly in memory, as illustrated by a significant group × time interaction, F(6,96) = 3.796, p = 0.002. Both Kicking groups improved verbal memory over time indicating the brain’s ability to learn, whereas the Non-ADHD-Heading group showed no improvement. The ADHD-Heading group showed a significant decline at 0h and 2h post-heading compared to other groups. As for visual memory, the ADHD-Heading group showed a significant decline at 24h post; however, all other groups displayed improvement. There were no group differences in remaining domains.ConclusionsData suggests neurocognitive vulnerability in athletes diagnosed with ADHD after experiencing SHI, specifically in memory performance. These outcomes can better inform clinicians; overall, promoting a better personalized care in athletes diagnosed with ADHD.

Characterization of On-Field Head Impact Exposure in Youth Soccer

2020 ◽  
pp. 1-7
Author(s):  
Brian T. Tomblin ◽  
N. Stewart Pritchard ◽  
Tanner M. Filben ◽  
Logan E. Miller ◽  
Christopher M. Miles ◽  
...  
Keyword(s):  
Linear Acceleration ◽  
Head Impact ◽  
Video Data ◽  
Soccer Players ◽  
Youth Soccer ◽  
Head Impacts ◽  
Head Kinematics ◽  
Frequency Of Contact ◽  
Ball Contact

The objective of this research was to characterize head impacts with a validated mouthpiece sensor in competitive youth female soccer players during a single season with a validated mouthpiece sensor. Participants included 14 youth female soccer athletes across 2 club-level teams at different age levels (team 1, ages 12–13 y; team 2, ages 14–15 y). Head impact and time-synchronized video data were collected for 66 practices and games. Video data were reviewed to characterize the type and frequency of contact experienced by each athlete. A total of 2216 contact scenarios were observed; heading the ball (n = 681, 30.7%) was most common. Other observed contact scenarios included collisions, dives, falls, and unintentional ball contact. Team 1 experienced a higher rate of headers per player per hour of play than team 2, while team 2 experienced a higher rate of collisions and dives. A total of 935 video-verified contact scenarios were concurrent with recorded head kinematics. While headers resulted in a maximum linear acceleration of 56.1g, the less frequent head-to-head collisions (n = 6) resulted in a maximum of 113.5g. The results of this study improve the understanding of head impact exposure in youth female soccer players and inform head impact exposure reduction in youth soccer.

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