Abstract:
AIM/OBJECTIVE:There is ongoing controversy about persistent neurological deficits in active and former football (soccer) players. We reviewed the literature for associations between football activities (including heading/head injuries) and decline in brain structure/function. DESIGN:Systematic literature review. DATA SOURCES:MEDLINE, Embase, PsycINFO, CINAHL, Cochrane-CRCT, SportDiscus, Cochrane-DSR=4 (accessed 2 August 2016). ELIGIBILITY CRITERIA FOR SELECTING STUDIES:Original studies reporting on football-related persistent effects on brain structure/function. Results from neurocognitive testing, neuroimaging and EEG were compared with controls and/or correlated with heading frequency and/or head injuries. Methodological quality was rated for risk-of-bias, including appropriateness of controls, correction for multiple statistical testing and assessment of heading frequency and head injuries. RESULTS:30 studies with 1691 players were included. Those 57% (8/14) of case-control studies reporting persistent neurocognitive impairment had higher odds for inappropriate control of type 1 errors (OR=17.35 (95% CI (10.61 to 28.36)) and for inappropriate selection of controls (OR=1.72 (1.22 to 2.43)) than studies observing no impairment. Studies reporting a correlation between heading frequency and neurocognitive deficits (6/17) had lower quality of heading assessment (OR=14.20 (9.01 to 22.39)) than studies reporting no such correlation. In 7 of 13 studies (54%), the number of head injuries correlated with the degree of neurocognitive impairment. Abnormalities on neuroimaging (6/8 studies) were associated with subclinical neurocognitive deficits in 3 of 4 studies. SUMMARY/CONCLUSIONS:Various methodological shortcomings limit the evidence for persistent effects of football play on brain structure/function. Sources of bias include low-quality assessment of heading frequency, inappropriate control for type 1 errors and inappropriate selection of controls. Combining neuroimaging techniques with neurocognitive testing in prospective studies seems most promising to further clarify on the impact of football on the brain.
journal_name
Br J Sports Medjournal_title
British journal of sports medicineauthors
Tarnutzer AA,Straumann D,Brugger P,Feddermann-Demont Ndoi
10.1136/bjsports-2016-096593subject
Has Abstractpub_date
2017-11-01 00:00:00pages
1592-1604issue
22eissn
0306-3674issn
1473-0480pii
bjsports-2016-096593journal_volume
51pub_type
杂志文章,评审abstract::Acute mood changes occur with various forms of physical activity. Increased levels of endogenous opioids (endorphins) in response to exercise may mediate activity-induced shifts in mood state. Thirteen female and six male aerobics class participants aged 20-46 years received the opiate receptor antagonist naltrexone a...
journal_title:British journal of sports medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1136/bjsm.26.2.111
更新日期:1992-06-01 00:00:00
abstract::Regular physical exercise reduces cardiovascular morbidity and mortality. A small proportion of athletes, however, are at increased risk of exercise-related sudden cardiac death (SCD) as a result of quiescent cardiac anomalies. The preventable nature of such deaths has prompted the medical and sporting governing bodie...
journal_title:British journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1136/bjsm.2008.054874
更新日期:2009-09-01 00:00:00
abstract:OBJECTIVES:To quantify age, sex, sport and training type-specific effects of resistance training on physical performance, and to characterise dose-response relationships of resistance training parameters that could maximise gains in physical performance in youth athletes. DESIGN:Systematic review and meta-analysis of ...
journal_title:British journal of sports medicine
pub_type: 杂志文章,meta分析,评审
doi:10.1136/bjsports-2015-095497
更新日期:2016-07-01 00:00:00
abstract::Posterior dislocation of the shoulder is an uncommon injury, accounting for between 2% and 4% of all shoulder dislocations. It occurs most frequently in patients following convulsions or direct anterior force to the shoulder. It is a particularly uncommon injury in sport. This paper reports an unusual case of bilateal...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.31.1.74
更新日期:1997-03-01 00:00:00
abstract:OBJECTIVE:To assess the incidence, severity and nature of injuries, to determine risk factors for injury and to identify potential injury prevention strategies in men's international Rugby-7s tournaments. DESIGN:A prospective cohort study. PARTICIPANTS:Players from core teams competing in matches at 6 Sevens World Se...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2016-096043
更新日期:2016-06-01 00:00:00
abstract::The objectives of this study were to evaluate the effect of exercise on knee joint laxity. If exercise induced laxity is physiological, incorporation of this quality into a ligament replacement material would be indicated. Twenty recreational long distance runners average age 41 (range 24 to 50 yr) were tested before ...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.23.3.165
更新日期:1989-09-01 00:00:00
abstract:BACKGROUND:Some snowboarders listen to music on a personal music player and the objective was to determine if listening to music was associated with injury in a terrain park. METHODS:A case-control study was conducted at a terrain park in Alberta, Canada during the 2008-2009 and 2009-2010 winter seasons. Cases were sn...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2014-093487
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:ECG is recommended for preparticipation health examination in athletes. Owing to a lack of consensus on how to read and interpret athletes' ECGs, different criteria for abnormality are used. AIMS:To compare the prevalence of abnormal ECGs and test the correlation between visual and computer-based measuremen...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2014-093412
更新日期:2014-05-01 00:00:00
abstract:OBJECTIVES:To show how epidemiological data can be presented and analysed in frequency based and risk based formats and how risk based information can simplify management decisions on injury prevention strategies in professional football. METHODS:The club physiotherapists at four English professional football clubs pr...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.36.6.446
更新日期:2002-12-01 00:00:00
abstract:OBJECTIVE:Regular physical activity is associated with a reduction of cardiovascular morbidity and mortality; however, evidence of unfortunate cardiovascular events accompanying elite sport involvement continues to accumulate. To date, no information is available on possible peculiarities of the cardiovascular risk pro...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2007.045021
更新日期:2008-11-01 00:00:00
abstract:OBJECTIVE:Describe the self-reported prevalence and nature of Olympic-career injury and general health and current residual symptoms in a self-selected sample of retired Olympians. METHODS:3357 retired Olympians from 131 countries completed a cross-sectional online survey, distributed by direct email through World Oly...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2019-101772
更新日期:2021-01-01 00:00:00
abstract::Cold-water immersion (CWI) is a popular recovery intervention after exercise. The scientific rationale is not clear, and there are no clear guidelines for its use. The aim of this review was to study the physiological and biochemical effect of short periods of CWI. A computer-based literature search, citation tracking...
journal_title:British journal of sports medicine
pub_type: 杂志文章,meta分析,评审
doi:10.1136/bjsm.2009.065565
更新日期:2010-02-01 00:00:00
abstract::The exon-1 of the androgen receptor (AR) gene contains two repeat length polymorphisms which modify either the amount of AR protein inside the cell (GGN(n), polyglycine) or its transcriptional activity (CAG(n), polyglutamine). Shorter CAG and/or GGN repeats provide stronger androgen signalling and vice versa. To test ...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2009.060285
更新日期:2011-02-01 00:00:00
abstract:BACKGROUND:No previous study on adult football involving several different countries has investigated the incidence and pattern of injuries at the highest club competitive level. OBJECTIVE:To investigate the risk exposure, risk of injury, and injury pattern of footballers involved in UEFA Champions League and internat...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2004.014571
更新日期:2005-08-01 00:00:00
abstract::Jogging is a form of physical exercise that has stimulated the imagination of the public as shown by recent appearance of its own journal (Jogging Magazine, Editor J. Bryant). We wish to report the unusual complication of an acute stroke sustained during jogging. ...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.14.4.229
更新日期:1980-12-01 00:00:00
abstract:OBJECTIVE:To evaluate the efficacy of ultrasound guided dry needling and autologous blood injection for the treatment of patellar tendinosis. DESIGN:Prospective cohort study. SETTING:Hospital/clinic based. PATIENTS:47 knees in 44 patients (40 men, 7 women, mean age 34.5 years, age range 17 to 54 years) with refracto...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2006.034686
更新日期:2007-08-01 00:00:00
abstract::Groin pain is a difficult clinical problem because of the variety of conditions that are potentially responsible. Much of the "theory" of groin pain is just that, theory, and much needs to be done to document the pathomechanics and symptomatology of this anatomical region. Notwithstanding the above, clinicians should ...
journal_title:British journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1136/bjsm.31.2.97
更新日期:1997-06-01 00:00:00
abstract:BACKGROUND:Over the last few years, changes in cutaneous homoeostasis resulting from sports activities have been reported. In particular, alterations in sweating mechanisms, the hydrolipid barrier, and surface bacterial flora, together with exposure to atmospheric conditions and the need to use medicaments, detergents,...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.35.2.100
更新日期:2001-04-01 00:00:00
abstract::Team sports are increasingly popular, with millions of participants worldwide. Athletes engaged in these sports are required to repeatedly produce skilful actions and maximal or near-maximal efforts (eg, accelerations, changes in pace and direction, sprints, jumps and kicks), interspersed with brief recovery intervals...
journal_title:British journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1136/bjsports-2013-092950
更新日期:2013-12-01 00:00:00
abstract:BACKGROUND:Screening to prevent sudden cardiac death remains a contentious topic in sport and exercise medicine. The aim of this study was to assess whether the use of a standardised criteria tool improves the accuracy of ECG interpretation by physicians screening athletes. METHODS:Design: Randomised control trial. St...
journal_title:British journal of sports medicine
pub_type: 杂志文章,随机对照试验
doi:10.1136/bjsports-2013-093360
更新日期:2014-08-01 00:00:00
abstract:OBJECTIVES:To determine in this pilot study whether aerobic exercise affects phenylacetic acid concentration in the urine. METHODS:Twenty healthy men provided 24 hour urine samples on two consecutive days for the determination of phenylacetic acid levels. Before and during day 1, subjects refrained from physical activ...
journal_title:British journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1136/bjsm.35.5.342
更新日期:2001-10-01 00:00:00
abstract:BACKGROUND:The current methods measuring sports activity after anterior cruciate ligament (ACL) injury are commonly restricted to the most knee-demanding sports, and do not consider participation in multiple sports. We therefore developed an online activity survey to prospectively record the monthly participation in al...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2012-092075
更新日期:2014-05-01 00:00:00
abstract:BACKGROUND:Participation in regular exercise and athletic activities across the lifespan is encouraged to maintain the cardiovascular and musculoskeletal systems and general wellbeing. Before the menopause there is an increased risk of anterior cruciate ligament (ACL) injuries in female athletes, whereas there is an in...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2008.054296
更新日期:2010-09-01 00:00:00
abstract:OBJECTIVE:To systematically review evidence of primary outcomes from randomised controlled trials (RCTs) examining the effect of treatment strategies on quality of life (QoL) or psychosocial factors in individuals with knee osteoarthritis (OA). DESIGN:Systematic review with meta-analysis. DATA SOURCES:Medline, Embase...
journal_title:British journal of sports medicine
pub_type: 杂志文章,meta分析,评审
doi:10.1136/bjsports-2017-098099
更新日期:2018-08-01 00:00:00
abstract::To determine the consequences of two different stride frequencies on ventilation (VE) at similar levels of carbon dioxide production (VCO2), eleven male subjects performed two work tests on the treadmill. One test involved walking at a speed of 5 km/hr on a 15% grade while the other consisted of running on the treadmi...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.19.4.210
更新日期:1985-12-01 00:00:00
abstract::The purpose of this study was to formulate a simplistic method of assessing human structural dysplasia and to validate a classification system that would objectively categorize the type and extent of such dysplasia through the use of indices. Anthropometric measurements were taken from a sample of 222 male college stu...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.18.1.22
更新日期:1984-03-01 00:00:00
abstract:PURPOSE:Physical fitness may confer protection from thrombosis; however, exercise-induced platelet activation may be involved in the triggering of acute vascular events. This study aimed to assess haemostatic responses to acute exercise in trained and sedentary middle-aged subjects. METHODS:21 first class Scottish foo...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2008.053306
更新日期:2010-06-01 00:00:00
abstract:BACKGROUND:Musculotendinous overuse injuries are prevalent in people with type 2 diabetes. Non-enzymatic glycosylation of collagen resulting in tendon stiffening may play a role. In this case-control study we determined whether patients with diabetes had poorer ultrasonographic structure in their Achilles tendons compa...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2014-093696
更新日期:2015-08-01 00:00:00
abstract::Six men performed a total of 23 modified Wingate power tests against 5.5 kp (53.9 N) resistance on a Monark 864 ergometer. Breath-by-breath VO2 was measured using a SensorMedics 4400 metabolic cart. Peak anaerobic power (highest 5 s; mean(s.e.m.)) was 819(16) W (11.1(0.6) W kg-1) and anaerobic capacity (work in 30 s; ...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.25.4.196
更新日期:1991-12-01 00:00:00
abstract:BACKGROUND:In professional soccer, a significant amount of training time is used to improve players' aerobic capacity. However, it is not known whether soccer specific training fulfils the criterion of effective endurance training to improve maximal oxygen uptake, namely an exercise intensity of 90-95% of maximal heart...
journal_title:British journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1136/bjsm.36.3.218
更新日期:2002-06-01 00:00:00