Jan Ekstrand
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Jan Ekstrandengineering Degrees
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Jan Ekstrandcomputer-science Degrees
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Engineering Computer Science
Jan Ekstrand's Degrees
- PhD Computer Science Stanford University
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(Suggest an Edit or Addition)Jan Ekstrand's Published Works
Number of citations in a given year to any of this author's works
Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author
Published Works
- Consensus statement on injury definitions and data collection procedures in studies of football (soccer) injuries (2006) (1212)
- Injury incidence and injury patterns in professional football: the UEFA injury study (2009) (1115)
- Epidemiology of Muscle Injuries in Professional Football (Soccer) (2011) (1064)
- Soccer injuries and their mechanisms: a prospective study. (1983) (607)
- Previous injury as a risk factor for injury in elite football: a prospective study over two consecutive seasons (2006) (595)
- Injuries affect team performance negatively in professional football: an 11-year follow-up of the UEFA Champions League injury study (2013) (537)
- Methods for epidemiological study of injuries to professional football players: developing the UEFA model (2005) (512)
- Consensus statement on injury definitions and data collection procedures in studies of football (soccer) injuries. (2006) (498)
- Stabilometry in functional instability of the ankle and its value in predicting injury. (1984) (465)
- Hamstring injuries have increased by 4% annually in men's professional football, since 2001: a 13-year longitudinal analysis of the UEFA Elite Club injury study (2016) (463)
- Terminology and classification of muscle injuries in sport: The Munich consensus statement (2012) (428)
- Hamstring muscle injuries in professional football: the correlation of MRI findings with return to play (2011) (419)
- UEFA Champions League study: a prospective study of injuries in professional football during the 2001–2002 season (2005) (416)
- The avoidability of soccer injuries. (1983) (353)
- Doha agreement meeting on terminology and definitions in groin pain in athletes (2015) (338)
- Risk Factors for Lower Extremity Muscle Injury in Professional Soccer (2013) (324)
- The Incidence of Ankle Sprains in Soccer (1990) (315)
- The epidemiology of anterior cruciate ligament injury in football (soccer): a review of the literature from a gender-related perspective (2010) (278)
- Anterior cruciate ligament injury in elite football: a prospective three-cohort study (2010) (276)
- Incidence of soccer injuries and their relation to training and team success (1983) (273)
- Lower extremity goniometric measurements: a study to determine their reliability. (1982) (270)
- Risk of injury in elite football played on artificial turf versus natural grass: a prospective two-cohort study (2006) (269)
- Injuries among male and female elite football players (2009) (265)
- The frequency of muscle tightness and injuries in soccer players (1982) (253)
- Effects of warming up, massage, and stretching on range of motion and muscle strength in the lower extremity (1983) (250)
- UEFA injury study: a prospective study of hip and groin injuries in professional football over seven consecutive seasons (2009) (239)
- Injuries in Swedish elite football—a prospective study on injury definitions, risk for injury and injury pattern during 2001 (2005) (237)
- Prevention of soccer injuries (1983) (231)
- Injury incidence and distribution in elite football—a prospective study of the Danish and the Swedish top divisions (2005) (231)
- ACL injuries in men's professional football: a 15-year prospective study on time trends and return-to-play rates reveals only 65% of players still play at the top level 3 years after ACL rupture (2016) (226)
- Factors affecting stabilometry recordings of single limb stance (1984) (202)
- A congested football calendar and the wellbeing of players: correlation between match exposure of European footballers before the World Cup 2002 and their injuries and performances during that World Cup (2004) (201)
- Fewer ligament injuries but no preventive effect on muscle injuries and severe injuries: an 11-year follow-up of the UEFA Champions League injury study (2013) (200)
- Consensus statement on injury definitions and data collection procedures in studies of football (soccer) injuries (2006) (200)
- Muscle injury rates in professional football increase with fixture congestion: an 11-year follow-up of the UEFA Champions League injury study (2013) (189)
- Evidence-based hamstring injury prevention is not adopted by the majority of Champions League or Norwegian Premier League football teams: the Nordic Hamstring survey (2015) (188)
- Surface-Related Injuries in Soccer (1989) (188)
- High risk of new knee injury in elite footballers with previous anterior cruciate ligament injury (2006) (168)
- Sports-related concussion increases the risk of subsequent injury by about 50% in elite male football players (2014) (167)
- Return to play following muscle injuries in professional footballers (2014) (162)
- Keeping your top players on the pitch: the key to football medicine at a professional level (2013) (162)
- Three-dimensional measurement of rearfoot motion during running. (1990) (160)
- Why we should focus on the burden of injuries and illnesses, not just their incidence (2017) (157)
- The incidence and differential diagnosis of acute groin injuries in male soccer players (1999) (155)
- UEFA injury study—an injury audit of European Championships 2006 to 2008 (2009) (151)
- Exposure and injury risk in Swedish elite football: a comparison between seasons 1982 and 2001 (2003) (147)
- Comparison of injuries sustained on artificial turf and grass by male and female elite football players (2011) (131)
- Return to play after thigh muscle injury in elite football players: implementation and validation of the Munich muscle injury classification (2013) (124)
- Recurrence of Achilles tendon injuries in elite male football players is more common after early return to play: an 11-year follow-up of the UEFA Champions League injury study (2013) (116)
- Time before return to play for the most common injuries in professional football: a 16-year follow-up of the UEFA Elite Club Injury Study (2019) (116)
- Risk for injury when playing in a national football team (2004) (113)
- Time-trends and circumstances surrounding ankle injuries in men's professional football: an 11-year follow-up of the UEFA Champions League injury study (2013) (110)
- Injury prevention strategies, coach compliance and player adherence of 33 of the UEFA Elite Club Injury Study teams: a survey of teams’ head medical officers (2016) (109)
- The epidemiology of groin injury in senior football: a systematic review of prospective studies (2015) (109)
- Football injuries during European Championships 2004–2005 (2007) (105)
- Diagnosis and prognosis of acute hamstring injuries in athletes (2012) (100)
- Epidemiology of Patellar Tendinopathy in Elite Male Soccer Players (2011) (97)
- Isokinetic torque levels for knee extensors and knee flexors in soccer players. (1986) (96)
- Stress fractures in elite male football players (2012) (95)
- Regional differences in injury incidence in European professional football (2013) (92)
- Is there a correlation between coaches’ leadership styles and injuries in elite football teams? A study of 36 elite teams in 17 countries (2017) (92)
- Communication quality between the medical team and the head coach/manager is associated with injury burden and player availability in elite football clubs (2018) (84)
- Fifth metatarsal fractures among male professional footballers: a potential career-ending disease (2013) (84)
- Injury recurrence is lower at the highest professional football level than at national and amateur levels: does sports medicine and sports physiotherapy deliver? (2016) (83)
- From Sports Injury Prevention to Safety Promotion in Sports (2006) (80)
- The UEFA injury study: 11-year data concerning 346 MCL injuries and time to return to play (2013) (74)
- MRI findings and return to play in football: a prospective analysis of 255 hamstring injuries in the UEFA Elite Club Injury Study (2016) (71)
- Surgery versus conservative treatment in soccer players with chronic groin pain: A prospective randomised study in soccer players (2001) (70)
- Internal workload and non-contact injury: a one-season study of five teams from the UEFA Elite Club Injury Study (2018) (69)
- Duration of stretching effect on range of motion in lower extremities. (1985) (68)
- Muscle strength and flexibility in different positions of soccer players. (1984) (65)
- Epidemiology of football injuries (2008) (65)
- Significance of heel pad confinement for the shock absorption at heel strike. (1988) (64)
- Muscle injury rate in professional football is higher in matches played within 5 days since the previous match: a 14-year prospective study with more than 130 000 match observations (2017) (63)
- Epidemiological and clinical outcome comparison of indirect (‘strain’) versus direct (‘contusion’) anterior and posterior thigh muscle injuries in male elite football players: UEFA Elite League study of 2287 thigh injuries (2001–2013) (2015) (62)
- If overuse injury is a ‘training load error’, should undertraining be viewed the same way? (2016) (62)
- Previous injuries and persisting symptoms in female soccer players. (1990) (60)
- The effect of a patella brace on performance in a knee extension strength test in patients with patellar pain (1984) (58)
- Are severe musculoskeletal injuries associated with symptoms of common mental disorders among male European professional footballers? (2015) (55)
- Lower Reinjury Rate with a Coach-Controlled Rehabilitation Program in Amateur Male Soccer (2007) (55)
- Injury rates decreased in men’s professional football: an 18-year prospective cohort study of almost 12 000 injuries sustained during 1.8 million hours of play (2021) (54)
- The risk for injury in football. There is a need for a consensus about definition of the injury and the design of studies (2003) (52)
- Hip and groin time-loss injuries decreased slightly but injury burden remained constant in men’s professional football: the 15-year prospective UEFA Elite Club Injury Study (2018) (51)
- Head and Neck Injuries in Professional Soccer (2013) (51)
- The Nordic Football Injury Audit: higher injury rates for professional football clubs with third-generation artificial turf at their home venue (2013) (50)
- Results of reconstruction of acute ruptures of the anterior cruciate ligament with an iliotibial band autograft (1999) (46)
- Reconstruction of the anterior cruciate ligament with the iliotibial band autograft in patients with chronic knee instability (2001) (44)
- Comparison of injury incidences between football teams playing in different climatic regions (2013) (39)
- Lower Injury Rates for Newcomers to Professional Soccer (2013) (38)
- Upper extremity injuries in male elite football players (2013) (38)
- Are Elite Soccer Teams’ Preseason Training Sessions Associated With Fewer In-Season Injuries? A 15-Year Analysis From the Union of European Football Associations (UEFA) Elite Club Injury Study (2020) (38)
- High rate of second ACL injury following ACL reconstruction in male professional footballers: an updated longitudinal analysis from 118 players in the UEFA Elite Club Injury Study (2021) (37)
- Medial collateral ligament injuries of the knee in male professional football players: a prospective three-season study of 130 cases from the UEFA Elite Club Injury Study (2019) (36)
- Return to play after surgery for isolated unstable syndesmotic ankle injuries (West Point grade IIB and III) in 110 male professional football players: a retrospective cohort study (2019) (36)
- Reconstruction of anterior cruciate ligament deficient knees in soccer players with an iliotibial band autograft (2001) (36)
- Normal course of events amongst Swedish soccer players: an 8-year follow-up study. (1990) (32)
- Epidemiology and return to play following isolated syndesmotic injuries of the ankle: a prospective cohort study of 3677 male professional footballers in the UEFA Elite Club Injury Study (2017) (32)
- A 94% return to elite level football after ACL surgery: a proof of possibilities with optimal caretaking or a sign of knee abuse? (2010) (31)
- Match Injury Rates in Professional Soccer Vary With Match Result, Match Venue, and Type of Competition (2013) (31)
- Preventing injuries in professional football: thinking bigger and working together (2016) (30)
- Terminology and classification of muscle injuries in sport: a consensus statement (2012) (25)
- Torsional injuries of the lower limb: an analysis of the frictional torque between different types of football turf and the shoe outsole (2012) (24)
- Muscle rehabilitation after arthroscopic meniscectomy with or without tourniquet control (1985) (24)
- Fracture epidemiology in male elite football players from 2001 to 2013: ‘How long will this fracture keep me out?’ (2016) (24)
- Elite football teams that do not have a winter break lose on average 303 player-days more per season to injuries than those teams that do: a comparison among 35 professional European teams (2018) (23)
- Role of illness in male professional football: not a major contributor to time loss (2016) (23)
- Reconstruction of the anterior cruciate ligament in athletes, using a fascia lata graft: a review with preliminary results of a new concept. (1989) (22)
- Impact of social standing on sports injury prevention in a WHO safe community: intervention outcome by household employment contract and type of sport (2005) (18)
- Playing too Many Matches is Negative for both Performance and Player Availability – Results from the On-Going UEFA Injury Study (2013) (18)
- Hamstring injury rates have increased during recent seasons and now constitute 24% of all injuries in men’s professional football: the UEFA Elite Club Injury Study from 2001/02 to 2021/22 (2022) (15)
- Does player unavailability affect football teams' match physical outputs? A two-season study of the UEFA champions league. (2017) (14)
- Few training sessions between return to play and first match appearance are associated with an increased propensity for injury: a prospective cohort study of male professional football players during 16 consecutive seasons (2019) (14)
- Injury and illness epidemiology in professional Asian football: lower general incidence and burden but higher ACL and hamstring injury burden compared with Europe (2021) (13)
- No Association Between Return to Play After Injury and Increased Rate of Anterior Cruciate Ligament Injury in Men’s Professional Soccer (2016) (13)
- Perspectives in football medicine (2018) (13)
- Sport medicine research needs funding: the International football federations are leading the way (2013) (12)
- No association between surface shifts and time-loss overuse injury risk in male professional football. (2016) (11)
- MUSCLE INJURY RATES IN PROFESSIONAL FOOTBALL INCREASE WITH FIXTURE CONGESTION: AN 11-YEAR FOLLOW-UP OF THE UEFA CHAMPIONS LEAGUE INJURY STUDY (2014) (10)
- The Incidence of Ankle Sprains in Orienteering. (1990) (10)
- Overuse and distorsion soccer injuries related to the player's estimated maximal aerobic work capacity. (1986) (10)
- 3D measurement of rearfoot motion during running (1989) (10)
- Influence of the COVID-19 Lockdown and Restart on the Injury Incidence and Injury Burden in Men’s Professional Football Leagues in 2020: The UEFA Elite Club Injury Study (2022) (9)
- Exercises for knee flexors and extensors in uninjured soccer players: effects of two different programs. (1985) (7)
- Epidemiology of patellar tendon injury in elite male soccer players (2011) (6)
- Infographic. High rate of second ACL injury following ACL reconstruction in male professional footballers: an updated longitudinal analysis from 118 players in the UEFA Elite Club Injury Study (2021) (6)
- Hand, Wrist, and Forearm Injuries in Male Professional Soccer Players: A Prospective Cohort Study of 558 Team-Seasons From 2001-2002 to 2018-2019 (2021) (5)
- Portfolio of qualifications: a tool for evaluating academic productivity at the Karolinska Institutet. (1999) (5)
- Epidemiological Data on LCL and PCL Injuries Over 17 Seasons in Men’s Professional Soccer: The UEFA Elite Club Injury Study (2020) (5)
- Still poorly adopted in male professional football: but teams that used the Nordic Hamstring Exercise in team training had fewer hamstring injuries – a retrospective survey of 17 teams of the UEFA Elite Club Injury Study during the 2020–2021 season (2022) (5)
- Injuries in male professional football: A prospective comparison between individual and team‐based exposure registration (2016) (5)
- modelfootball players: developing the UEFA Methods for epidemiological study of injuries to (2005) (4)
- [Considerably decreased amount of soccer injuries after introduction of a preventive program]. (1983) (4)
- Re-injuries in Professional Football: The UEFA Elite Club Injury Study (2018) (4)
- [A training program for the prevention of injuries to reduce soccer injuries by 75 per cent]. (1982) (4)
- Male field hockey prospective injury study. Comparison with soccer [Estudio lesional prospectivo en hockey hierba. Comparacin con el ftbol] (2009) (4)
- The influence of climate type on injury epidemiology in european professional football (2011) (3)
- Analysis models for the prevention of sports injuries. Epidemiological study of injuries: The UEFA model in football (2010) (3)
- Stress fractures in football (2016) (3)
- The Female Player: Special Considerations (2018) (2)
- Risk factors for hamstring muscle injury in male elite football: medical expert experience and conclusions from 15 European Champions League clubs (2023) (2)
- Editorial (2003) (2)
- Occurrence of athletic injuries in voluntary participants in a 1-year extensive newspaper exercise campaign. (1986) (2)
- NO DIFFERENCE IN MUSCLE INJURY RATES DURING PROFESSIONAL FOOTBALL MATCHES PRECEDED BY THREE TO FIVE DAYS OF RECOVERY (2017) (2)
- Does player unavailability affect football teams’ match physical outputs in the UEFA champions league? (2017) (1)
- Anterior ankle impingment syndrome is less frequent, but associated with a longer absence and higher re-injury rate compared to posterior syndrome: a prospective cohort study of 6754 male professional soccer players (2022) (1)
- Injury epidemiology in professional football in South America compared with Europe (2021) (1)
- THE UEFA INJURY STUDY: 11-YEAR DATA CONCERNING 346 MCL INJURIES IN PROFESSIONAL FOOTBALL (2014) (1)
- [Treatment of meniscus lesions in athletes]. (1984) (1)
- The Young Player: Special Considerations (2018) (1)
- 1511 Isokinetic Concentric Quadriceps and Hamstring Strength Variables From the NFL Scouting Combine Are Not Predictive of Hamstring Injury in First-Year Professional Football Players (2013) (0)
- OAJSM_A_237997 105..112 (2020) (0)
- Terminology and Classification of Athletic Muscle Injuries (2014) (0)
- THE NORDIC FOOTBALL INJURY AUDIT: HIGHER INJURY RATES FOR PROFESSIONAL FOOTBALL CLUBS WITH THIRD-GENERATION ARTIFICIAL TURF AT THEIR HOME VENUE (2014) (0)
- Normal courseofevents amongst Swedishsoccer players:an8-year follow-upstudy (2017) (0)
- Low adoption in women’s professional football: teams that used the Nordic Hamstring Exercise in the team training had fewer match hamstring injuries (2023) (0)
- Thigh Muscle Injuries in Professional Football Players: A Seven Year Follow-Up of the UEFA Injury Study (2012) (0)
- Most modifiable risk factors for hamstring muscle injury in women's elite football are extrinsic and associated with the club, the team, and the coaching staff and not the players themselves: the UEFA Women's Elite Club Injury Study. (2023) (0)
- [The merit profile--an instrument for the evaluation of academic achievement]. (1998) (0)
- Awards at SCMSS 2012 (2012) (0)
- Towards removing performance barriers : Prediction of burnout in female elite soccer players (2013) (0)
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