Does Public Interest in Specific Injuries Increase When They Occur During Mixed Martial Arts Bouts? A Study of Google Search Patterns

Authors: William B. Roberts, MS; Michael E. Bibens BS; Matt Vassar, PhD.

Institution:Oklahoma State University Center for Health Sciences, Dept. of Institutional Research

Institution Address: 1111 West 17th Street, Tulsa, OK, 74107

Corresponding Author: William Roberts; 1111 West 17th Street, Tulsa, OK, 74107;

Conflicts of Interest: The authors have nothing to disclose.

Does Public Interest in Specific Injuries Increase When They Occur During Mixed Martial Arts Bouts? A Study of Google Search Patterns


Mixed martial arts (MMA) is a combat sport that combines fighting techniques from many disciplines, such as wrestling, boxing, karate, Muay Thai, and Brazilian Jiu Jitsu. Despite this sport’s popularity –  influenced by the internet and social media –  the effect of high-profile MMA injuries on the public’s subsequent online search patterns has yet to be explored. In this study, we examined injuries from popular UFC bouts and observe whether the volume of Google searches for specific injuries increased after the associated fights. Google Trend (GT) searches were conducted in order to evaluate the relationship between fighter search popularity and injury search popularity during the week the fight took place. The percent change in search interest for injuries increased in 9 of 10 cases (Mdn = 446%, IQR: 168.75%-1643.75%). The findings of this study are expected to inform sports medicine personnel regarding specific platforms for sharing their insights and recommendations for the treatment and prevention of MMA injuries and other trauma-related injuries. This study highlights how investigation of public search interest may ultimately have a positive impact on health care outcomes.  Through the use of analyzing MMA injuries and the search patterns associated with them, the results of this study may aid sports medicine personnel in directing patients to online information that they have personally reviewed and approved.

Keywords: Google Trends, Mixed Martial Arts (MMA), Infodemiology, Public Interest, Altmetrics, Twitter


Mixed martial arts (MMA) is a combat sport based on the fighting techniques from many disciplines, such as wrestling, boxing, karate, Muay Thai, and Brazilian Jiu Jitsu. Bouts take place in an octagon-shaped cage and last either 3 or 5 rounds, depending on whether the bout is for a weight class championship. Fighters can defeat their opponent by knockout, referee stoppage, submission, or outscoring an opponent based upon the judges’ decision (21). In the early 1990s MMA made its way to the United States as the Ultimate Fighting Championship (UFC). Over time, the MMA has experienced a global surge in popularity and has attracted widespread media coverage (3,6).        

While the internet and social media have played an important role in advancing MMA popularity, these media outlets have also become a means to publicize fight injuries. For example, MMA fighters have shared radiographic images of their injuries with fans on social media to make these injuries appear more genuine and to stimulate public interest (26). In addition, these outlets may also be used by experts, such as orthopedic surgeons, to teach the public about MMA and other traumatic sports related orthopedic injuries. Approximately 21% of orthopedic surgeons have a Facebook or Twitter account, and they could potentially use these platforms to lower the frequency of these injuries and increase the accuracy of information available regarding their treatment (7).

Previous studies using GT data have examined the effects of awareness campaigns on searches for particular disorders, such as deep vein thrombosis, skin cancer, and breast cancer (15,17,29,30-32) Other studies have focused on the influence celebrities have on public awareness of various disorders. Studies on search interest after Katie Couric’s colon cancer, Angelina Jolie’s breast cancer, and Robin Williams’s depression have found that public interest increased following a celebrity’s statement about a diagnosis or treatment (4,8,12).

Despite previous GT studies, the effect of high-profile MMA injuries on the public’s subsequent online search patterns has yet to be explored. This effect could be assessed by analyzing the frequency of Google keyword searches (5). Here we examine injuries from popular UFC bouts and observe whether the volume of Google searches for specific injuries increases after the associated fights. Results from this study may inform sports medicine physicians, orthopedic surgeons, athletic trainers, and others about public search interest in the UFC and related traumatic sports injuries at the time of occurrence (7,9). In turn, practitioners who diagnose, treat, and manage such injuries may consider creating a list of approved online resources with accurate information for their patients and social media followers.


Data source    

Our sample of injuries was gathered from “Sherdog’s Top 10 Worst UFC Injuries” available at (31). In addition to recording injury information, we recorded the name of the fighter sustaining the injury, the date of injury occurrence, and the fighter’s popularity (measured by the number of Twitter followers).

Google Trends evaluation

Google Trends (GT) was used to evaluate search interest in these injuries before and after the bouts in question. GT is a free, publicly accessible online platform that captures temporal and geospatial internet search patterns for user-specified keywords (26). GT searches were conducted on June 4, 2018, by one of us (WR). GT can be searched using topics (i.e., a group of terms that share the same concept, in any language) or terms (i.e., search terms that show matches for all search terms in the query, in only the language searched). Searching by topic may be thought of as being more specific, while searching by term is more sensitive. For example, if one searches for the sport “Mixed Martial Arts” as a topic, users will see GT data for all searches related to MMA (e.g., UFC fighters, UFC bouts), but no search returns unrelated to MMA. In contrast, if one searches for “mixed martial arts” as a term, search returns related to mixed (e.g., mixed drinks), martial (e.g., dictionary definition of martial), and arts (e.g., local art museums). There is not a topic for everything, so in our study we used a combination of searches by topic and term.

Google Trends fighter-injury search

Each fighter was searched as a topic, and their injury was searched as a term. To illustrate this difference more clearly, when Leslie Smith was entered into GT, a drop-down menu provided a list of suggestions. The first suggestion was to search Leslie Smith as a term, and all other suggestions enabled searching Leslie Smith as a topic. We chose the topic Leslie Smith with the correct description (i.e., American mixed martial artist). The second part of each GT search included the injury that was sustained during the fight, searched as a term. For example, a complete search from this study included Leslie Smith (American mixed martial artist) and “cauliflower ear” as a term, and it yielded 2 sets of search data. Using this search combination allowed us to visualize spikes in the fighter and the injury occurring simultaneously. All our searches and their search filter settings are included in Table 1.

Table 1: Fighters and their characteristics.

Injured Fighter Google Trends Description Injury Searched Twitter followers Percent change in Injury Search Interest Number of Weeks to Return to Baseline Time Range Searched
Anderson SilvaBrazilian mixed martial artistBroken Leg8.08M26003 weeksJune 30, 2013-2014
Tim SylviaAmerican mixed martial arts fighterDislocated Elbow18.1K24004 weeksJan 25th, 2004-2005
Jon JonesAmerican mixed martial artistBroken Toe2.03M18003 weeksOct. 28th, 2012-2013
Rory MacDonaldCanadian mixed martial artistBroken Nose229K11756 weeksJan. 11th, 2015-2016
Antonia Rodrigo NogueiraBrazilian mixed martial artistBroken Arm1.33M5255 weeksJun. 12th, 2011-2012
Corey HillAmerican mixed martial artistBroken LegNo Twitter Account3676 weeksJun. 15th, 2008-2009
Leslie SmithAmerican mixed martial artistCauliflower Ear21.9K2252 weeksMay. 18th, 2014-2015
Rich FranklinAmerican mixed martial artistBroken Nose200K1502 weeksApr. 16th, 2006-2007
Mark HominickCanadian mixed martial artistHematoma56.3K1123 weeksOct. 31st 2010-2011
Brandon VeraMixed martial artistBroken Jaw101K0No change in interestSept. 27th, 2009-2010

Google Trends filter application

To narrow the scope of each search we applied 4 filters: location, time range, category, and search type. The location filter was set to “worldwide.” The time range filter for each fighter included data points 6 months before and 6 months after each fight. The category filter was “health,” thus allowing us to compare search volumes of each fighter and injury to all searches in the health category (5,28) The search type filter was set to “web search.”

Google Trends data scaling

GT data are not displayed as the total number of searches over time. Rather, GT accounts for search volume and population density in a certain region (13). Therefore, equal search volume will be charted differently for countries with different populations. This adjustment ensures that large populations, with higher raw numbers of search volumes, will not be perceived as always having the greatest interest in a search. Google Trends’ data are scaled from 0 to 100 where 0 indicates no search data are available and 100 indicates the greatest search interest for a topic or search term (19). When multiple items are searched simultaneously on GT, only the item with the highest search interest peaks at 100. For example, if we search Leslie Smith and “cauliflower ear,” only one of the plots of GT data will peak at 100. All other points in time for each plot will be scaled proportionally relative to the peak. When a spike in search interest for the fighter and injury occurred at the same time, we called this pattern of co-occurrence an “alignment.”

Data analysis

To enhance the reproducibility of our search we applied recommendations from the Checklist for Documentation of Google Trends by Nuti et al (24). Because of the small sample size, we used nonparametric statistics to analyze our data. Non parametric tests are distribution independent tests which are useful while using medians for analysis (25). Thus, median (IQRs) were used to summarize the data. Spearman’s rho was used to evaluate the association between the number of Twitter followers and the percent change in search behavior from baseline to peak. All statistical analyses were conducted using Stata 15.1.


Our sample size consisted of 10 injured fighters. The characteristics of these 10 fighters are shown in Table 1. The number of Twitter followers for each fighter ranged from 18.1K to 8.08 million. A co-occurring pattern was observed between searches for the fighter and for the injury (i.e., an alignment) in 9 of 10 cases (Figure 1). The percent change in search interest for injuries increased in 9 of 10 cases (median = 446%, IQR: 168.75%-1643.75%). Anderson Silva’s broken leg and Tim Silvia’s dislocated shoulder accounted for the greatest changes in search interest from baseline. Search interest for injuries returned to baseline in the ensuing weeks following each fight (median = 3weeks, IQR: 2.25-4.75 weeks). A moderate correlation was found between the number of Twitter followers and the percent change in search interest from baseline to peak (rs=.40)

Figure 1


Results from our study indicate that public interest in particular injuries increased following high-profile UFC fights. This finding may encourage timely dissemination of evidence-based information about particular injuries since search interest appears to increase shortly after injury occurrence. Here, we first discuss the roles of YouTube and social media in disseminating health information to large audiences in a timely manner. These two platforms are commonly used by the public to become familiar with recently occurring athletic injuries as well as sports medicine personnel when directing patients to online information that they have personally reviewed and approved. We then discuss potential avenues to maximize the accurate dissemination about sports-related injuries following bouts.

YouTube video accuracy

When the public seeks out health information on the internet, many options are available, and YouTube may be among the most popular of alternatives. An impressive body of literature is focused on the quality of health information presented to the public on YouTube. A systematic review on the use of YouTube to disseminate health information found that YouTube videos contain misleading information—mostly anecdotal—and the information often contradicts reference standards (23). Gonzalez-Estrada et al. (16) reported that the majority of YouTube videos on asthma management contained alternative approaches, such as live-fish ingestion and reflexology, as opposed to evidence-based treatments. In orthopedics, MacLeod et al. (22) found that information about femoroacetabular impingement on YouTube was of low overall quality, and a study on the X-stop device for lumbar spinal stenosis found that YouTube videos about the device contained a high degree of misinformation and failed to describe the controversy surrounding its use (2). Further, some studies have noted that reputable organizations (e.g., professional medical societies, disease-specific societies and organizations) are not producing videos on YouTube to combat the large volume of misinformation, and even when high-quality videos are available, they may not be prominently ranked by YouTube’s search algorithm (1,18). Collectively, these studies call for the dissemination of better evidence-based information to the public. This current deficit in accurate health information is best addressed by the physicians with expertise on the topic. Lander et al. (20) reported that one-third of orthopedic surgeons in their sample had posted at least 1 YouTube video, and this platform may be important for knowledge dissemination, given its fairly high use by orthopedic surgeons and the public.

Social media for dissemination

Social media presents another popular option for the dissemination of health care information. It has been estimated that only 21% of United States-based orthopedic surgeons have Facebook pages and 14% have Twitter accounts (7). However, given that 50% of orthopedic patients use social media, and of these, sports medicine patients use these platforms more than patients in all other orthopedic subspecialties (9), it seems prudent for the sports medicine community to use these platforms for disseminating accurate health information. Social media outlets are efficient mechanisms for releasing information in real time, and they could easily be used to provide accurate information about particular injuries that occur during sporting events, such as UFC fights. Djuricich (10) introduced the concept of evidence-based tweeting as one approach to quickly making research evidence available to large audiences.

Strengths and weaknesses

Our study has several strengths. We used the checklist by Nuti et al. (24) when developing the search strategies for this study to make our searches reproducible. We made careful use of the search functionality of GT and gave thorough consideration to each search term. Our study also had limitations. For one, the fights we selected were based on a ranking provided by Sherdog. While this site is widely used in the MMA community, there is a possibility of bias in these rankings. There are also limitations inherent in using GT data. For example, all data associated with GT are anonymous, which limits the ability of researchers to make assertions regarding the search patterns of different patient groups. Also, data are normalized, which limited our ability to examine the true magnitude of search volumes that could be obtained from raw search data. Furthermore, not all internet searches are conducted using the Google search engine.


Understanding the ways in which the public prefers to search for information on injuries may aid sports medicine personnel in directing patients to online information that they have personally reviewed and approved. Thus, sports medicine personnel may play a contributing role in increasing the accuracy of online health by decreasing the amount of inaccurate information that is accessible by the public (11,14).

The findings of this study are expected to inform orthopedic surgeons, sports medicine doctors, and athletic trainers on the specific electronically based platforms of which to disseminate their insights and recommendations for treatment and prevention of MMA injuries and other trauma-related injuries. This use of social media and online websites could lead to increased accuracy of online health information and ultimately improve treatment and prevention of these associated injuries. More broadly, this study highlights how investigation of public search interest may have a positive impact on health care outcomes.


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Figure 1. Google search volumes for the injured UFC fighter and the particular injury. Searches were conducted 6 months pre- and post injury. Dotted blue lines represent the fighter. Solid orange lines represent the injury.

2019-08-14T15:25:54-05:00August 15th, 2019|Research, Sports Medicine|Comments Off on Does Public Interest in Specific Injuries Increase When They Occur During Mixed Martial Arts Bouts? A Study of Google Search Patterns

Kinetic Chain Injuries and Their Relationship to Subsequent ACL Tears

Authors: Jefferson Brand, MD, Richard Hardy, Ed.D., LAT, CSCS, Christopher Butler, Ph.D., Emily Monroe, MD

Corresponding Author:
Richard Hardy Ed.D., LAT, CSCS
111 17th Ave E #101, Alexandria, MN 56308
Fax: 320-589-6428
Office number: 320-589-6443
Cell number: 320-760-2031

Richard Hardy is a certified athletic trainer and coordinator of research at Heartland Orthopedic Specialists in Alexandria, MN. He is also contracted to the University of Minnesota Morris where he serves as an instructor and provides athletic training services.

Kinetic chain injuries and their relationship to subsequent ACL tears

Purpose: The relationship between previous kinetic chain injuries and the likelihood of anterior cruciate ligament (ACL) injuries remains under-explored. We compared the number of ankle injuries between subjects that had a surgically treated ACL tear to subjects that had a surgically treated shoulder injury (e.g., labral tear). We evaluated if a previous disruption of the lower kinetic chain (e.g., ankle injury) is a predisposing factor for ACL injuries. Our hypothesis was that ACL reconstruction patients will have a higher rate of previous ankle injuries than the control group (surgically treated labral tear).

Methods: Overall, 108 patients have undergone either ACL reconstruction or labral repair surgery. To insure similarity, we assessed Tegner activity level, knee alignment, and Beighton scale. Patients completed a questionnaire about demographics, ankle injury history, and the AOFAS Ankle-Hindfoot scale. ANOVA statistically tested demographic data. Fisher’s exact test was used to determine if differences in previous ankle injury rates existed between groups.

Results: Overall, 63 patients (34 males/29 females) had ACL reconstruction and 45 patients (36 males/9 females) in the control group had surgery for labral lesions. No statistical differences occurred (P>0.05) for demographic data (age, BMI), Tegner activity scale, knee alignment, Beighton scale, or AOFAS Ankle-Hindfoot scores for each ankle. This suggests that the groups were comparable. Previous ankle injuries were common in both groups but not statistically significant.

Conclusions: Comparing surgically ACL injured knees to surgically treated labral tears, there was no significant difference in the rate of previous ankle injury. Therefore, previous ankle injuries may not predispose nor protect against future anterior cruciate ligament injuries.

Applications in sport: The knee is a link in the kinetic chain between the hip and ankle joints. Due to this, dysfunction of the ankle or hip joints could negatively affect the function of the knee joint. Therefore, we set out to see if ankle injury history is a predisposing factor for tears of the ACL of the knee. Through our research, we found that this was not the case; ACL tears occur independently to the kinetic chain. (more…)

2018-11-19T08:47:25-05:00December 6th, 2018|Research, Sports Medicine|Comments Off on Kinetic Chain Injuries and Their Relationship to Subsequent ACL Tears

Influencing Factors and Rationale for the Use of Athletic Trainers in Secondary School Athletic Programs

Stephanie H. Clines, PhD, LAT, ATC
Sacred Heart University, Fairfield, CT.

Cailee E. Welch Bacon, PhD, ATC
A.T. Still University, Mesa, AZ.

Christianne M. Eason, PhD, ATC
Lasell College, Newton, MA.

Kelly D. Pagnotta, PhD, LAT, ATC, PES
Jefferson University, Philadelphia, PA.

Robert A. Huggins, PhD, LAT, ATC
Korey Stringer Institute, University of Connecticut, Storrs, CT.

Bonnie L. Van Lunen, PhD, ATC, FNATA
Old Dominion University, Norfolk, VA.

Corresponding author:
Stephanie H. Clines, PhD, LAT, ATC
Sacred Heart University
5151 Park Ave
Fairfield, CT 06825
Phone: 203-365-4475

Stephanie Clines, PhD, ATC is a Clinical Assistant Professor in the College of Health Professions at Sacred Heart University in Fairfield, CT. She also serves as the Clinical Education Coordinator for both the Bachelor of Science and Master of Science in Athletic Training programs at the University.

Influencing Factors and Rationale for the Use of Athletic Trainers in Secondary School Athletic Programs

Purpose: Secondary school student-athletes often lack appropriate medical care during school sponsored sport participation. Athletic trainers (ATs) are qualified healthcare professionals that can fill this need. Barriers to hiring ATs have been identified, however the rationale regarding the use of ATs in schools remains unexplored. Understanding this phenomenon has the potential to guide strategies to improve access to ATs, thus improving athlete safety. Our objective was to explore high school athletic directors’ perceptions of the roles and services provided by ATs working in the secondary school setting and to understand the needs of the athletic program and school regarding the use of athletic training services.

Methods: Following a qualitative methodology, ten high school athletic directors employed by schools with full-time ATs completed telephone interviews. All interviews were recorded and transcribed verbatim. Data analysis followed the consensual qualitative research (CQR) approach.

Results: Procurement of athletic training positions was influenced by various personnel, community organizations, and policy. Rationale for requiring ATs within athletic programs included specialized training by ATs which was perceived to enhance safety and decrease liability. Participants viewed ATs as ideal athletic healthcare providers. Coaches were not supported as appropriate staff to fulfill this role. Financial and logistical challenges to the initiation and maintenance of AT positions were also discussed. Conclusions: The decision to utilize ATs is complex and influenced by multiple factors. Applications in Sport: Consideration of these factors may improve the success of athletic director’s efforts to initiate or maintain athletic training positions to support the safety and well-being of student-athletes within secondary school athletic programs.


2018-11-19T08:24:55-05:00November 29th, 2018|Research, Sports Medicine|Comments Off on Influencing Factors and Rationale for the Use of Athletic Trainers in Secondary School Athletic Programs

Playing with Pain: Social Class and Pain Reporting among College Student-Athletes

Author: James N. Druckman

Corresponding Author:
Department of Political Science
Northwestern University
601 University Place
Evanston, IL 60208
Phone: 847-491-7450
Fax: 847-491-8985

Jacob E. Rothschild
Department of Political Science
Northwestern University
601 University Place
Evanston, IL 60208
Phone: 847-491-7450
Fax: 847-491-8985

Playing with Pain: Social Class and Pain Reporting among College Student-Athletes

Socio-economic class affects a variety of health outcomes – this includes the experience of pain. Little work, however, explores how class affects pain experiences of college student-athletes. This gap is notable given injuries frequently occur in this population. We argue that lower class student-athletes will ironically be more likely to experience pain but less likely to report it. We find evidence for this claim with a large survey of student-athletes from a major National College Athletic Association conference. We further present evidence that class may influence pain reporting via identity, experiential, and social pathways. Our results highlight how potentially vulnerable student-athletes may “play with pain.” The findings also suggest that practitioners should pay particular attention to self-reports of pain by lower class student-athletes.

2018-08-30T16:40:58-05:00October 11th, 2018|Sports Medicine|Comments Off on Playing with Pain: Social Class and Pain Reporting among College Student-Athletes

Academic Accommodations for a Countywide Concussion High School Program

Authors: Ashley D. Lopez, M.S.; Michelle Shnayder; Bryan Pomares, M.H.S.; Jonathan Siegel; Kester Nedd, D.O.; Gillian Hotz, Ph.D.

Corresponding Author:
Gillian Hotz, Ph.D.
1095 NW 14th Ter
Miami, FL 33136

Gillian A. Hotz, PhD is a research professor at the University Of Miami Miller School Of Medicine and a nationally recognized behavioral neuroscientist and expert in pediatric and adult neurotrauma, concussion management, and neurorehabilitation. Dr. Hotz is the director of the KiDZ Neuroscience Center, WalkSafe and BikeSafe programs, and has been co-director of the Miller School of Medicine’s Concussion Program since 1995. She continues to assess and treat many athletes from Miami-Dade County public and private high schools, University of Miami, and from other colleges and the community.
Academic Accommodations for a Countywide Concussion High School Program


To describe a symptom-based distribution of Return to Learn school academic accommodations for adolescent student-athletes recovering from sports-related concussions that can be facilitated as part of their post-injury clinical care. The aim was also to explore demographic and recovery differences between those patients who received and did not receive accommodations.

Adolescent student-athletes from 35 public high schools were eligible for this study. Data collected included their demographics, clinical assessment, and ImPACT (ImPACT Applications, Inc.) testing performance prior to and following a concussion. Student-athletes receiving accommodations were compared with an age-matched comparison group that did not receive accommodations.

Between January 2014 and January 2017, 308 Miami-Dade County public high school student-athletes were seen at the University of Miami’s UConcussion Clinic. Of these, 72 received school accommodations and 236 did not. The first clinical visit for these athletes was a mean of 14 days post injury with mean recovery time and return to play of 25 days. Significant differences were found among female student-athletes as well as patients reporting more initial symptoms despite similar demographics and baseline ImPACT scores.

Concussed adolescent student-athletes, particularly females, reporting greater symptom complaints during their first clinical encounter, may benefit most from a collaborative treatment approach including school accommodations that are individualized and specifically targeted. Future research should continue to investigate accommodation adherence and long-term concussion recovery.

Applications In Sports
Student-athletes receiving academic accommodations may return to play sooner, as academic accommodations allow them to recover from injuries at a quicker pace.

2017-12-26T08:43:37-05:00December 28th, 2017|Research, Sports Medicine|Comments Off on Academic Accommodations for a Countywide Concussion High School Program