Benjamin Clarsen

ORCID: 0000-0003-3713-8938
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About
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Research Areas
  • Sports injuries and prevention
  • Injury Epidemiology and Prevention
  • Cardiovascular Effects of Exercise
  • Shoulder Injury and Treatment
  • Sports Performance and Training
  • Trauma and Emergency Care Studies
  • Occupational Health and Performance
  • Musculoskeletal pain and rehabilitation
  • Health disparities and outcomes
  • Winter Sports Injuries and Performance
  • Traffic and Road Safety
  • Knee injuries and reconstruction techniques
  • Survey Methodology and Nonresponse
  • Climate Change and Health Impacts
  • Lower Extremity Biomechanics and Pathologies
  • Shoulder and Clavicle Injuries
  • Body Composition Measurement Techniques
  • Global Health Care Issues
  • Racial and Ethnic Identity Research
  • Cardiac Arrest and Resuscitation
  • Bone health and osteoporosis research
  • Sports Dynamics and Biomechanics
  • Global Public Health Policies and Epidemiology
  • Sport Psychology and Performance
  • Musculoskeletal Disorders and Rehabilitation

Oslo Sports Trauma Research Center
2015-2024

Norwegian School of Sport Sciences
2015-2024

Western Norway University of Applied Sciences
2022-2024

Fédération Internationale de Football Association
2023-2024

Idrettssenteret (Norway)
2024

Norwegian Institute of Public Health
2020-2023

Institute for Musculoskeletal Health
2023

The University of Sydney
2023

Central Queensland University
2023

SINTEF Digital
2023

Deciding when to return sport after injury is complex and multifactorial-an exercise in risk management. Return decisions are made every day by clinicians, athletes coaches, ideally a collaborative way. The purpose of this consensus statement was present synthesise current evidence make recommendations for decision-making, clinical practice future research directions related returning sport. A half meeting held Bern, Switzerland, the First World Congress Sports Physical Therapy. 17 expert...

10.1136/bjsports-2016-096278 article EN British Journal of Sports Medicine 2016-05-25

Injury and illness surveillance, epidemiological studies, are fundamental elements of concerted efforts to protect the health athlete. To encourage consistency in definitions methodology used, enable data across studies be compared, research groups have published 11 sport-specific or setting-specific consensus statements on sports injury (and, eventually, illness) epidemiology date. Our objective was further strengthen collection, reporting through an updated set recommendations for...

10.1136/bjsports-2019-101969 article EN cc-by-nc British Journal of Sports Medicine 2020-02-18

Background Current methods for injury registration in sports epidemiology studies may substantially underestimate the true burden of overuse injuries due to a reliance on time-loss definitions. Objective To develop and validate new method sports. Methods A method, including questionnaire, was developed validated 13-week prospective study among 313 athletes from five different sports, cross-country skiing, floorball, handball, road cycling volleyball. All completed questionnaire by email each...

10.1136/bjsports-2012-091524 article EN British Journal of Sports Medicine 2012-10-04
Manuela L. Ferreira Katie de Luca Teklehaimanot Gereziher Haile Jaimie D Steinmetz Garland T Culbreth and 95 more Marita Cross Jacek A Kopec Paulo H. Ferreira Fiona Blyth Rachelle Buchbinder Jan Hartvigsen Aimin Wu Saeid Safiri Anthony D. Woolf Gary S. Collins Kanyin Liane Ong Dan J. Stein Amanda Smith Jessica A Cruz Kai Fukutaki Semagn Mekonnen Abate Mitra Abbasifard Mohsen Abbasi‐Kangevari Zeinab Abbasi-Kangevari Ahmed Abdelalim Aidin Abedi Hassan Abidi Qorinah Estiningtyas Sakilah Adnani Ali Ahmadi Rufus Akinyemi Abayneh Tadesse Alamer Adugnaw Zeleke Alem Yousef Alimohamadi Mansour Abdullah Alshehri Mohammed M. Alshehri Hosam Alzahrani GK Mini Sohrab Amiri Hubert Amu Cătălina Liliana Andrei Tudorel Andrei Benny Antony Jalal Arabloo Judie Arulappan Ashokan Arumugam Tahira Ashraf Seyyed Shamsadin Athari Nefsu Awoke Sina Azadnajafabad Till Bärnighausen Lope H Barrero Amadou Barrow Akbar Barzegar Lindsay Bearne Isabela M. Benseñor Alemshet Yirga Berhie Bharti Bhandari Vijayalakshmi S Bhojaraja Ali Bijani Belay Boda Abule Bodicha Srinivasa Rao Bolla Javier Brazo‐Sayavera Andrew M. Briggs Chao Cao Periklis Charalampous Vijay Kumar Chattu Flavia Cicuttini Benjamin Clarsen Sarah Cuschieri Omid Dadras Xiaochen Dai Lalit Dandona Rakhi Dandona Azizallah Dehghan Takele Gezahegn Demie Edgar Denova‐Gutiérrez Syed Masudur Rahman Dewan Samath D Dharmaratne Mandira Lamichhane Dhimal Meghnath Dhimal Daniel Díaz Mojtaba Didehdar Lankamo Ena Digesa Mengistie Diress Hoa Do Linh Phuong Doan Michael Ekholuenetale Muhammed Elhadi Sharareh Eskandarieh Shahriar Faghani Jawad Fares Ali Fatehizadeh Getahun Fetensa Irina Filip Florian Fischer Richard C. Franklin Balasankar Ganesan Belete Negese Motuma Erena Getachew Ahmad Ghashghaee

Low back pain is highly prevalent and the main cause of years lived with disability (YLDs). We present most up-to-date global, regional, national data on prevalence YLDs for low from Global Burden Diseases, Injuries, Risk Factors Study 2021.Population-based studies 1980 to 2019 identified in a systematic review, international surveys, US medical claims data, dataset contributions by collaborators were used estimate 1990 2020, 204 countries territories. was defined as between 12th ribs...

10.1016/s2665-9913(23)00098-x article EN cc-by The Lancet Rheumatology 2023-05-22

Background Little information exists on the illness and injury patterns of athletes preparing for Olympic Paralympic Games. Among possible explanations current lack knowledge are methodological challenges faced in conducting prospective studies large, heterogeneous groups athletes, particularly when overuse injuries illnesses concern. Objective To describe a new surveillance method that is capable recording all types health problems to use it study Norwegian 2012 Methods A total 142 were...

10.1136/bjsports-2012-092087 article EN British Journal of Sports Medicine 2013-02-21

Aim To determine whether rotator cuff strength, glenohumeral joint range of motion and scapular control are associated with shoulder injuries among elite male handball players. Methods A total 206 players in the Norwegian league for men were tested prior to 2011–2012 season. Measures included: (1) internal external rotation motion, (2) isometric rotation, abduction strength (3) assessment dyskinesis. Players followed prospectively entire regular season (30 weeks), problems registered...

10.1136/bjsports-2014-093702 article EN British Journal of Sports Medicine 2014-06-19

Background Shoulder problems are highly prevalent among elite handball players. Reduced glenohumeral rotation, external rotation weakness and scapula dyskinesis have been identified as risk factors. Aim Evaluate the effect of an exercise programme designed to reduce prevalence shoulder in handball. Methods 45 teams (22 female teams, 23 male 660 players) were cluster randomised 331 players intervention group, 329 control group) followed for 1 competitive season (7 months). The Oslo Sports...

10.1136/bjsports-2016-096226 article EN British Journal of Sports Medicine 2016-06-16

What constitutes a ‘recordable event’ is arguably the most critical methodological factor affecting results of sports injury and illness surveillance studies. Although numerous consensus statements have attempted to standardise methodology,1–6 there remains considerable variation in current definitions injury. Underlying choice definition are number practical theoretical issues, including duration setting surveillance, available resources, type injuries illnesses interest, how data be...

10.1136/bjsports-2013-093297 article EN British Journal of Sports Medicine 2014-03-11

In 2013, the Oslo Sports Trauma Research Center Overuse Injury Questionnaire (OSTRC-O) was developed to record magnitude, symptoms and consequences of overuse injuries in sport. Shortly afterwards, a modified version OSTRC-O capture all types illnesses—The on Health Problems (OSTRC-H). Since then, users from range research clinical environments have identified areas which these questionnaires may be improved. Therefore, structure content reviewed by an international panel consisting original...

10.1136/bjsports-2019-101337 article EN British Journal of Sports Medicine 2020-02-14
Tiffany K. Gill Manasi Murthy Mittinty Lyn March Jaimie D Steinmetz Garland T Culbreth and 95 more Marita Cross Jacek A Kopec Anthony D. Woolf Teklehaimanot Gereziher Haile Hailey Hagins Kanyin Liane Ong Deborah Kopansky-Giles Karsten E Dreinhoefer Neil Betteridge Mohammadreza Abbasian Mitra Abbasifard krishna Abedi Miracle Ayomikun Adesina Janardhana P Aithala Mostafa Akbarzadeh-Khiavi Yazan Al Thaher Tariq A. Alalwan Hosam Alzahrani Sohrab Amiri Benny Antony Jalal Arabloo Aleksandr Y. Aravkin Ashokan Arumugam Krishna Kumar Aryal Seyyed Shamsadin Athari Alok Atreya Soroush Baghdadi Mainak Bardhan Lope H Barrero Lindsay Bearne Alehegn Bekele Bekele Isabela M. Benseñor Pankaj Bhardwaj Rajbir Bhatti Ali Bijani Theresa Bordianu Souad Bouaoud Andrew M. Briggs Huzaifa Ahmad Cheema Steffan Wittrup Christensen Isaac Sunday Chukwu Benjamin Clarsen Xiaochen Dai Katie de Luca Belay Desye Meghnath Dhimal Thanh Chi Adeniyi Francis Fagbamigbe Siamak Farokh Forghani Nuno Ferreira Balasankar Ganesan Mesfin Gebrehiwot Ahmad Ghashghaee Simon Matthew Graham Netanja I. Harlianto Jan Hartvigsen Ahmed I Hasaballah Mohammad Hasanian Mohammed Bheser Hassen Simon I Hay Mohammad Heidari Alexander Kevin Hsiao Irena Ilić Mohammad Jokar Himanshu Khajuria Mohammad Jobair Khan Praval Khanal Sorour Khateri Ali Kiadaliri Min Seo Kim Adnan Kısa Ali‐Asghar Kolahi Kewal Krishan Vijay Krishnamoorthy Iván Landires Bagher Larijani Thao T. Le Yo Han Lee Stephen S Lim Justin Lo Seyedeh Panid Madani Jeadran Malagón-Rojas Iram Malik Hamid Reza Marateb Ashish Jacob Mathew Tuomo J Meretoja Mohamed Kamal Mesregah Tomislav Meštrović Alireza Mirahmadi Nefsu Awoke Sadra Mohaghegh Ali H. Mokdad Kaveh Momenzadeh Sara Momtazmanesh Lorenzo Monasta

Musculoskeletal disorders include more than 150 different conditions affecting joints, muscles, bones, ligaments, tendons, and the spine. To capture all health loss from death disability due to musculoskeletal disorders, Global Burden of Diseases, Injuries, Risk Factors Study (GBD) includes a residual category for other osteoarthritis, rheumatoid arthritis, gout, low back pain, neck pain. This is called includes, example, systemic lupus erythematosus spondylopathies. We provide updated...

10.1016/s2665-9913(23)00232-1 article EN cc-by The Lancet Rheumatology 2023-10-23

Background Little epidemiological information exists on overuse injuries in elite road cyclists. Anecdotal reports indicate anterior knee pain and lower back may be common problems. Purpose This study was conducted to register among professional cyclists with special focus pain. Study Design Descriptive epidemiology study. Methods We attended training camps of 7 teams interviewed 109 116 (94%) they had experienced the previous 12 months. Injuries that required attention from medical...

10.1177/0363546510376816 article EN The American Journal of Sports Medicine 2010-09-16

Little is known about the true extent and severity of overuse injuries in sport, largely because methodological challenges involved recording them. This study assessed prevalence among N orwegian athletes from five sports using a newly developed method designed specifically for this purpose. The O slo S ports T rauma R esearch C enter veruse I njury Q uestionnaire was distributed weekly by e‐mail to 45 cross‐country skiers, 98 cyclists, 50 floorball players, 55 handball 65 volleyball players...

10.1111/sms.12223 article EN Scandinavian Journal of Medicine and Science in Sports 2014-03-30

Background Groin injuries represent a considerable problem in male football. Previous groin-specific prevention programmes have not shown significant reduction groin injury rates. An exercise programme using the Copenhagen Adduction increases hip adduction strength, key risk factor for injuries. However, its preventive effect is yet to be tested. Aim To evaluate of single-exercise approach, based on exercise, prevalence problems football players. Methods 35 semiprofessional Norwegian teams...

10.1136/bjsports-2017-098937 article EN British Journal of Sports Medicine 2018-06-10

The objective of this study was to estimate the incidence and prevalence injury illness among elite junior tennis players. A cohort 73 players (11-14 years) in 2012-2013 Dutch national high-performance program followed for 32 weeks; all participants completed study. OSTRC Questionnaire on Health Problems used record self-reported injuries illnesses training match exposure. Main outcome measures were average overuse density acute injury. On average, practiced 9.1 h/week (SD 0.6; range...

10.1111/sms.12471 article EN Scandinavian Journal of Medicine and Science in Sports 2015-05-05

Background Injury and illness surveillance in the aquatic disciplines has been conducted during FINA World Championships Olympic Games. The development of an aquatic-specific injury system will improve quality data collected preventive measures. Our ultimate objective is to enhance athlete health performance. Objective was refine protocols develop definitions illness; define location causation; better describe overuse injuries; regard pre-existing recurrent more accurately exposures a...

10.1136/bjsports-2015-095686 article EN British Journal of Sports Medicine 2015-11-27

Little is known regarding the overall health of youth elite athletes. Our aim was to describe prevalence and severity problems in a cohort athletes representing variety endurance, team, technical sports. Elite sport (N = 260, 16.2 years) from different Sport Academy High Schools Norway, group their teammates 60, 16.4 attending regular high schools, were included study. The Oslo Sports Trauma Research Centre ( OSTRC ) questionnaire on used self‐report injuries illnesses for 26 weeks. At any...

10.1111/sms.13047 article EN Scandinavian Journal of Medicine and Science in Sports 2017-12-27

The IOC made recommendations for recording and reporting epidemiological data on injuries illness in sports 2020, but with little, if any, focus female athletes. Therefore, the aims of this supplement to consensus statement are (i) propose a taxonomy categorisation athlete health problems across lifespan; (ii) make capture inform consistent symptoms, injuries, illnesses other outcomes injury epidemiology (iii) specifications when applying Strengthening Reporting Observational Studies...

10.1136/bjsports-2022-106620 article EN cc-by-nc British Journal of Sports Medicine 2023-06-22

Aim To record overuse injuries among male junior handball players throughout a season. Design Prospective cohort study. Methods Ten Norwegian teams (145 aged 16–18 years) were followed for one 10-month All sent the Oslo Sports Trauma Research Center Overuse Injury Questionaire every second week to located in shoulder, elbow, lower back and knee. The relative burden of was calculated each anatomical area represented, defined as proportion total cumulative severity score. Results average...

10.1136/bmjsem-2018-000391 article EN cc-by-nc BMJ Open Sport & Exercise Medicine 2018-06-01

Shoulder injuries are common among handball players and predominantly characterised by overuse characteristics. Reduced total glenohumeral rotation, external rotation weakness scapular dyskinesis have been identified as risk factors elite male players.To assess whether previously associated with shoulder in a large cohort of female players.329 (168 male, 161 female) from the two upper divisions Norway were included tested prior to 2014-2015 season. Measures internal range motion, isometric...

10.1136/bjsports-2017-097648 article EN British Journal of Sports Medicine 2017-08-07

Background The acute:chronic workload ratio (ACWR) is commonly used to manage training load in sports, particularly reduce injury risk. However, despite its extensive application as a prevention intervention, the effectiveness of management using ACWR has never been evaluated an experimental study. Aim To evaluate intervention designed prevalence health problems among elite youth football players both sexes. Methods We cluster-randomised 34 teams (16 females, 18 males) group (18 teams) and...

10.1136/bjsports-2020-103003 article EN British Journal of Sports Medicine 2020-10-09

Objective To describe the implementation of a health monitoring programme for Norwegian Paralympic and Olympic candidates over five consecutive Games cycles (London 2012, Sochi 2014, Rio de Janeiro 2016, PyeongChang 2018 Tokyo 2020). Methods Athletes were monitored 12–18 months preparing games using weekly online questionnaire (OSTRC-H2) with follow-up by physicians physiotherapists, who provided clinical care classified reported problems. Results Between 2011 2020, 533 95 athletes included...

10.1136/bjsports-2020-103717 article EN British Journal of Sports Medicine 2021-05-26

Geographical differences in health outcomes are reported many countries. Norway has led an active policy aiming for regional balance since the 1970s. Using data from Global Burden of Disease Study (GBD) 2019, we examined development and current state across Norwegian counties.Data life expectancy, healthy expectancy (HALE), years lost (YLLs), lived with disability (YLDs), disability-adjusted life-years (DALYs) its 11 counties 1990 to 2019 were extracted GBD 2019. County-specific contributors...

10.1016/s2468-2667(22)00092-5 article EN cc-by The Lancet Public Health 2022-06-29

Objective A periodic health evaluation (PHE) is a comprehensive and multidisciplinary investigation of athlete widely used in elite sport, but its contents benefits can be questioned. This study aimed to determine the prevalence conditions identified by PHE among Paralympic Olympic athletes over four consecutive Games cycles from Rio de Janeiro 2016 Beijing 2022 assess potential pitfalls programme detecting existing injuries, illnesses other issues. Methods We collected extensive history...

10.1136/bjsports-2023-107942 article EN cc-by-nc British Journal of Sports Medicine 2024-05-14

A thorough knowledge of the epidemiology and severity injuries illness in youth female elite sports is lacking due to methodological challenges involved recording them. In this study, prevalence incidence are assessed among athletes. Instead solely focusing on time-loss injuries, our study included all substantial non-substantial health problems (ie, mental illnesses).Sixty young Dutch athletes (age: 16.6 years (SD: 2.3), weight: 58.3 kg 15.1), height: 154.1 cm 44.2)) participating soccer...

10.1136/bmjsem-2016-000199 article EN cc-by-nc BMJ Open Sport & Exercise Medicine 2017-04-01
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