Preventing injuries in basketball - Purpose

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Preventing injuries in basketball

Purpose                                                            The factsheet has been developed for
                                                                   national basketball federations and local
The purpose of this factsheet is to highlight                      associations and is in particular of interest
the main risks involved in basketball and to                       for coaches, trainers and players. It aims to
give an overview of promising measures and                         assist coaches and players in developing
implementation strategies for reducing                             and implementing safety management
basketball injuries in number and in severity                      schemes in clubs at national and local level
of outcome.                                                        and to promote sustainable compliance of
It also presents preliminary results of a pilot                    coaches as well as athletes to such
project in collaboration with FIBA-Europe,                         schemes. More detailed information as to
the European basketball federation, and the                        the methodology, results and literature used
Swedish and Slovak national Basketball                             can be found in the reports listed on the last
Federations, implementing a set of most                            page, which are accessible at
promising measures adapted to local needs.                         www.safetyinsports.eu

Key messages

· Basketball is characterized by intensive body contact, frequent intermittent
  running and jumping, demanding one-on-one situations, quick direction
  changes in combination with challenging technique and coordination aspects
  like catching, throwing, passing and dribbling.

· The overall incidence of an acute injury in basketball is at around 3-6 inci-
  dents over 1000 hours of exposure. In competition the incidence is at least
  twice as high as during training practice. Within the EU-region it is estimated
  that at least 720,000 basketball-related injuries occur each year, at a direct
  medical cost of about € 500 million a year, among which knee injuries repre-
  sent a cost of around € 100-200 million/year.

· Most of the incidents happen during matches, causing injuries to the lower
  extremities, followed by head and finger injuries. Sprains, strains and contu-
  sions are the predominant injury types. More than one third of all injuries
  affect the ankle joint, mainly as a result from landing on an opponent’s foot
  when coming down from rebounds and from jump shots. Women are in par-
  ticular vulnerable to knee injuries, in particular to ACL-ruptures.

· Centre players seem to be more prone to injuries compared to other players.
  The paint (or key) area is also a clear high-risk zone. Typical movement patterns are running with quick direction
  changes, sharp cutting manoeuvres; and particularly jumping and landing.

· Quite some efforts are invested in preventing injuries in particular by adjusting the training protocols. Enhancing
  athletic condition as well as improvements in balance, coordination and technique skills are typically recommended
  to prevent injuries of the lower extremities. In addition, core stabilisation, flexibility and advanced elementary coordi-
  nation and technique skills are being advised. In addition to these measures, the use of protective equipment is be-
  ing promoted such as high-top shoes, mouth guards, taping, ankle braces and orthoses.

· Despite efforts of trainers to integrate injury prevention measures in the training schemes, the issue still seems to be
  not very popular among basketball players themselves. Fortunately, the importance of the issue is increasingly being
  recognised, in particular by coaches and trainers.

· Athletic training, e.g. muscle strengthening, stabilization and proprioception, contributes to performance enhance-
  ment as well as injury prevention. It is therefore advised that training sessions should be tailored towards the prime
  interest of players in enhancing their athletic performance and thus indirectly helping them to prevent injuries.

· More efforts should be invested in monitoring injuries in order to be better able to identify particular individual and
  situational risk factors, to monitor injury trends and to evaluate effects of preventive interventions in the specific club
  setting.
Game characteristics                               one-on-one situations with inevitable body
                                                       contact frequently occur, such as in handball
    Basketball is a so-called transition game,         or in football. Research evidence indicates
    continuously switching between defensive           that the overall incidence is at about 3-6 inju-
    and offensive play. The play includes running      ries per 1000 hours of exposure.
    forwards, backwards and sideward, planting,
    cutting, feints, jumps, landings, turns during     Taking into consideration an active population
    repeated one-on-one situations where addi-         of 1.7 million basketball players within the
    tional contact can occur.                          EU-27 with an average 140 hours a year
    Thus, the game action is characterized by          spent in training and competition, one has to
    frequent intermittent running and sprinting.       expect at least 720,000 basketball-related
    Motion analysis has shown that depending           injuries a year, excluding injuries during rec-
    on individual playing-time basketball players      reational basketball. One fifth of these injuries
    cover a distance between 4.6 and 5.8 km per        are severe knee which cause an average of
    game, with mean heart rates between 80             € 2,300 direct medical cost per case, while
    and 90% of individual maximum heart rates.         the average expenses of all other injuries are
    Therefore, players need to dispose of highly-      at around € 700 for treating the injury. A quick
    developed basic endurance and a proper             calculation indicates that basketball injuries
    athletic condition with regard to strength,        cost approximately € 500 million a year,
    agility, acceleration, deceleration and in par-    including knee injuries at a cost of around
    ticular jumping. It also requires a well-trained   € 100-200 million/year.
    anaerobic metabolism: athletes that are in         These estimations are quite conservative and
    bad athletic condition are prone to injury.        the actual costs are probably higher as lei-
                                                       sure time play is not included and chronic
    Modern basketball is a highly dynamic and          injuries are seriously underreported.
    demanding sport, with frequent body contact,
    even though the rules do not allow many            Injuries in competition gain more significance
    forms of body contact with other players.          with advanced age: while in young players
    The game is quite complex as it requires           nearly two third of all injuries occur during
    technical, tactical, athletic and cognitive        training, among adolescents and adults al-
    skills, all at the same time. In most cases, an    most half of all injuries occur in match plays,
    injury in basketball is not caused by one sin-     even though with rising age more time is be-
    gle factor but is often the result of a combina-   ing spent in training compared to time spent
    tion of multiple factors which are finally lead-   in competition. There is no certainty as to
    ing to an unintended result, respectively          possible differences in injury rates between
    causing a physical injury.                         recreational and elite athletes.

    Injury characteristics                             Some studies suggest that the injury rate for
                                                       female players is higher compared to men.
                                                       For instance, WNBA players reported in one
    In general terms we have to make a distinc-
                                                       study more injuries than NBA players, both
    tion between acute and chronic injuries.
                                                       during training practices and in competitive
    Acute injuries result from a specific, identifi-
                                                       games. However, it is absolutely certain that
    able event whereas chronic injuries are
                                                       women are more vulnerable to specific inju-
    caused by repeated micro-traumas without a
                                                       ries, in particular to suffering knee injuries.
    unique identifiable event being responsible
    for the injury.
                                                       Regardless age, gender and performance
    Although chronic injuries, in particular
                                                       level of players, there is a general tendency
    chronic knee pains (jumper's knee), fre-
                                                       that the majority of injuries affect the lower
    quently occur among basketball players,
                                                       limbs with the ankle joint being the most af-
    overuse injuries are not so well recorded yet.
                                                       fected body part: in more than one third of
    Injury incidence rates in basketball are com-
                                                       all cases, ankle joints are injured. Women are
    parable to those in other team sports where

2
Body parts affected by acute injuries
                                                                   among males (left) and females (right)

more prone to non-contact knee injuries pos-        kle sprains typically occur while a player lands
sibly due to deficits in neuromuscular control      on the opponent’s foot after a jump shot or
as well as greater joint laxity and lesser mus-     rebound. The paint (or key) area is also a
cular stiffness.                                    clear high-risk zone.
Younger athletes seem to be more prone to
injuries of the upper body regions, especially      Knee injuries, in particular anterior cruciate
finger injuries, resulting from incorrect ball      ligament (ACL) injuries, often occur in situa-
handling, or head injuries. With advancing          tions while there is no immediate contact with
age there is an increase in injuries of the         another player, typically while running with
lower extremities, in particular in knee inju-      quick direction changes, in cutting manoeu-
ries. Still, throughout all age groups ankle        vres, in dynamic starts and stops, in twisting
injuries are the leading injury cause.              or turning and in single-leg landings.
                                                    Many so-called non-contact injuries may have
Irrespective of age, gender or performance          been provoked by some minor contact shortly
level, sprains (ankle, knee and finger joints)      before the injury event. It has been shown
are the most common type of acute injury            that even a minor contact during jumping
followed by muscle strains, contusions and          phase, pivoting or feinting can make players
fractures. Younger athletes are typically           loose body control.
more vulnerable to fractures than older ath-
letes, in particularly affecting fingers or         Centre players are destined to collect most of
wrists, as well as to facial and dental injuries.   the rebounds. In addition, they normally play
                                                    most of their time in the key area, which is by
Chronic injuries usually result from repetitive     definition a high risk area. Therefore it is not
stress on biological tissues such as cap-           surprising to find that centre players have
sules, ligament or tendons, leading to insta-       higher incidences compared to guards and
bilities of the affected joints. In basketball,     forwards who have more game action around
the most common overuse injury is the so            the three-point-arch.
called jumper’s knee resulting from patellar
inflammation, patellar tendinopathy or ante-        Taking into account all these risk factors, it
rior knee pain.                                     seems appropriate to educate and train play-
                                                    ers in how to successfully manage contact
Circumstances                                       situations, to enhance performance in typical
                                                    basic motor patterns such as jumping, landing
At least half of all injuries occur in contact      and cutting – also in combination with contact
with other players and also in rebounds. An-        (body control) – and to improve the general

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fitness level of the athletes. As previous      Experts opinion
    injuries may often lead to recurring injuries
    and therefore sufficient attention should be     It is evident that athletic training, e.g. muscle
    paid to proper rehabilitation and regenera-      strengthening, stabilization and propriocep-
    tion.                                            tion, contributes to performance enhance-
                                                     ment as well as injury prevention. Therefore,
    Prevention approaches                            it is advised by the consulted experts that
                                                     training sessions should be tailored towards
    In general, measures aiming at preventing        the prime interest of players in enhancing
    sport injuries can be roughly divided into       their athletic performance. There are ample
    four more or less distinct categories,           opportunities to integrate into these training
    namely into measures focusing on ‘training       programmes preventive measures that are
    and physical preparation', ‘technical and        addressing high risk injury situations, in par-
    political approaches', ‘equipment and facili-    ticular contact situations with opponents, and
    ties’, and ‘medical and non-medical sup-         the well known injury mechanisms. Also at
    port’.                                           early age, the correct technique should be
                                                     trained in basketball movement patterns, e.g.
    A literature search, carried out in the frame-   jumping, landing and feints, that are fre-
    work of the Safety in Sports project (see        quently associated with increased injury risks.
    acknowledgement section), identified 109
    preventive recommendations in 70 publica-        More specifically the following (mixtures of)
    tions related to preventing injuries in bas-     approaches are recommended by the con-
    ketball. Most of the 70 references originated    sulted experts in developing training and bas-
    from the United States of America. Half of       ketball practicing programmes:
    the published recommendations were
    based on                                         · Very basic exercises focussing on stabilisa-
    strong scientific evidence, all others were at     tion of the core, balancing and coordination
    least based on expert opinion.                     practices and proper jumping and landing
                                                       techniques. These exercises should be in-
    In order to better asses the value of these        tegral parts of the warm-up routine (10-15
    conclusions and recommendations from the           min).
    literature survey, a selected group of ex-       · The use of balance training in general is
    perts in the field was invited to review each      being strongly recommended as a routine
    of the publications on three criteria:             practice with the aim to prevent ankle
    · potential effectiveness of recommended           sprains.
        measure or programme in terms of ex-         · Structured warm-up programme are being
        pected contribution to the reduction of         advised that contain agility, balance,
        injuries in number and/or severity;             strength and playing technique exercises
    · potential applicability of measure in term        and that are designed to improve knee and
        of required efforts for implementation          ankle control during landing and pivoting
        (e.g. time, money, infrastructures, com-        movements with the aim to prevent knee
        petencies); and                                 and ankle injuries among youth athletes.
    · potential chance of acceptance of meas-        · Technique, such as cutting and landing
        ures by athletes, coaches and associa-           movements, and balance training on wob-
        tions and expected level of compliance           ble boards or mats should be trained from
        on the longer term.                              the age of 12 years onwards.
                                                     · Preventive training programmes should
    The feedback from the consulted 20 experts           also include strength and power exercises,
    led to a reduced list of recommended prac-           neuromuscular training, plyometrics and
    tices that are promising as to their actual          agility exercises, and be integrated into
    contribution to injury reduction and the po-         warm-up routine.
    tential of being accepted and applied in a       · Twenty minute training programmes that
    sustainable manner in day to day practices          include warm up, stretching, strengthening,
    and training of basketball players.                 plyometrics, agility drills and cool down can

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improve flexibility, strength and biome-        In the framework of the Safety in Sports-
    chanical aspects that are associated with       project (see acknowledgement section), col-
    ACL injuries.                                   laborations could be established with the Slo-
·   Neuromuscular training may help to re-          vak and Swedish basketball federations.
    duce ACL injuries in females athletes,          These federations were invited to have
    under the condition that it includes plyo-      coaches and officials participating in surveys
    metrics, balance, and strengthening exer-       that aimed to better understand their views
    cises and that the training sessions are        and support needs. Many coaches positively
    performed more than once in a week and          responded to that invitation, more than one
    over a period of at least 6 weeks in a row.     hundred in each of the two countries. These
·   Athletes playing basketball can also bene-      coaches were also involved in developing
    fit from a supervised athletic conditioning     tailor made set of promising prevention strate-
    programme that includes dynamic warm-           gies and measures ('national toolkits') and in
    up, agility/quickness drills, sport-specific    pilot testing these toolkits within their respec-
    plyometrics, functional weight training,        tive clubs.
    core training and an appropriate cool
    down with static stretching.                    Awareness and consumer practices
·   It is recommended to have young female          The majority of Slovak coaches recognized
    basketball athletes participating in pre-       injuries as a (very) important issue, while the
    season jump training programmes that            Swedish coaches seemed to be less aware of
    include progressive resistance weight           the urgency. In both countries, coaches be-
    training for the lower extremities.             lieved that injuries can be reduced through
·   Prophylactic neuromuscular and proprio-         better athletic preparation and by allowing
    ceptive training programme may also             longer regeneration and rehabilitation peri-
    have direct effect in decreasing the num-       ods.
    ber of ACL injuries in female athletes
    when emphasizing proper landing tech-           Stretching seemed to be the most preferred
    nique.                                          preventive measure among the Slovak
·   Individualized season-attending athletic        coaches, while the Swedish coaches are
    conditioning and technique training with        more focusing on muscle strengthening exer-
    particular regard to basic basketball-          cises. Coaches from both federations recog-
    specific movement patterns that com-            nised the moderate or even low level of inter-
    monly lead to injuries. Ligament sprains        est among players to increase training efforts
    and knee internal derangements may be           in view of preventing injuries. Nevertheless,
    at least partially preventable with interven-   simple measures such as taping and use of
    tions such as taping, bracing and neuro-        orthoses and protectors, appear to be more
    muscular training. External ankle support,      widely accepted.
    e.g. orthoses, tape and/or high- top
    shoes, may in particular help to prevent        Both national groups of experts underlined
    injuries to re-occur.                           the importance of educating coaches, as in
                                                    team sports particularly coaches play a deci-
                                                    sive role in translating the prevention evi-
How to get the right mix of inter-                  dence into practice. Therefore, coaches are
ventions                                            the best advocates and change managers for
                                                    implementing effective, applicable and ac-
In team sports, coaches play a decisive role        ceptable injury prevention.
in implementing prevention evidence into            Both federations are already active in educat-
practice and to integrate injury control meas-      ing coaches. In Sweden, the “Basketsmart”
ures into current training and practices.           knee prevention programme is being pro-
Therefore, it is essential to understand the        moted through coaching clinics and a website
perception and knowledge of these practitio-        for clubs, coaches and athletes. In Slovakia,
ners as to the injury problem itself as well as     there is a strong university-based tradition in
their views on how to tackle the issue within       educating basketball coaches, however, the
existing training practices, organisational         curriculum of these courses are addressing
structures and capacities.

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injury prevention not always in a consistent       agement programme for basketball players,
    manner.                                            to be implemented at national and club level,
                                                       can be specified as follows:
    Pilots
    Both groups of experts were involved in criti-     Training and physical preparation
    cally reviewing the evidence based recom-
    mended practices and in assessing the appli-       - Basic physical preparation
    cability and acceptability of these practices      Basketball is a highly demanding team sport.
    within their federation. Based on the results      To meet the demands of the game, players
    of that review, a draft toolkit of promising in-   at all levels and ages need a proper basic
    jury prevention measures was made for each         athletic condition as to endurance, strength,
    of the two groups for integration in current       flexibility and speed. Athletes in bad athletic
    programmes offered by the national federa-         condition are significantly more vulnerable for
    tions to their coaches and into the training       acute injuries and in particular for developing
    practices of the involved coaches. This proc-      overuse symptoms like jumper’s knee or low
    ess included a couple of consultation meet-        back pain.
    ings with the respective national basketball
    associations, consultations with national ex-      Structured and supervised athletic condition-
    perts and the organisation of coaching clinics     ing programmes should be offered to sports-
    and training seminars in the respective two        men and women at all ages and at all levels
    countries. A baseline and follow up survey         of performance, as part of pre-season physi-
    was carried out to assess the impact of the        cal preparation and condition training during
    pilot programme on the attitude of coaches         seasons. Such programmes should include
    as well as their training practices.               individually adapted endurance training,
                                                       functional weight training, dynamic mobiliza-
    The results of these pilot-projects are en-        tion and agility drills.
    couraging:
    · Through the pilots, coaches became more          - Structured warm-up routines
      aware of the necessity to invest in injury       General cardiovascular activation for 10-20
      prevention;                                      minutes prior to basketball sessions is
    · Owing to the pilots, coaches became more         essential and should include basic running
      willing and able to direct their training        drills but also neuromuscular, proprioceptive
      practices towards training contents that         and balance exercises, and core stabilization
      are more effective in reducing injuries, in      and coordination practices. Plyometrics and
      particular muscle strengthening and co-          agility drills should be included at the end of
      ordination exercises;                            warming up.
    · Through the programme, coaches seem to           All these highly effective training elements
      have found better opportunities to motivate      can be easily included in routine training and
      their team members in appreciating and           warming up practices and do not require ex-
      accepting the training practices offered;        tra time and efforts.
    · The information provided, including web-
      pages, reached the target audiences very         - Basic and advanced technique training
      well; and                                        Technique training is not only most helpful in
    · The pilots led to injury prevention injury       enhancing the game performance of athletes
      prevention being more strongly anchored          but also to reduce the risks related to crucial
      into the education and training curricula of     movement patterns and game situations.
      these federations.                               Proper jumping and landing technique in
                                                       terms of knee and ankle control help athletes
    What needs to be done                              to sustain crucial situations like single-leg
                                                       landings. Correct ball handling is an impor-
                                                       tant factor to prevent numerous finger
    While taking into consideration the results of
                                                       sprains and quick and controlled feet assist
    the expert consultations as well as the pilot
                                                       in coping pivoting movements.
    testing of recommended measures, the four
    components of a comprehensive safety man-
                                                       Technique training, should start at young

6
age. With increasing age and performance         for professional players but also for lower
level technique training should be adapted to    level players, a revision of the competition
the advanced demands of the athletes. This       schedule can help to shrink the dramatic
means for example, progressively adding          number of injuries during and immediately
controlled perturbations during exercising       after (inter-) national competitions.
these movement patterns. Intense physical
contact is inherent element of modern bas-       Equipment and facilities
ketball and players should be trained to cope
with intense body contacts in match plays.       - Mouth Guards
Basically, this also helps athletes performing   Dental injuries are rather severe and are of-
better e.g. better scoring efficiency in con-    ten leaving long-lasting scars. Custom-made
tested jump shots.                               mouth guards have shown to prevent dental
                                                 and orofacial injuries as well. It is therefore
- Neuromuscular training                         strongly recommended that basketball play-
There is sufficient scientific evidence that     ers, in particular centre players wear custom-
exercises on unstable devices such as wob-       made mouth guards.
ble boards, slings or mats in combination
with core stabilization and plyometrics are      - Ankle Support
helpful when conducted                           It is evident that ankle sprains are at least
regularly (at least 1-2 times per week) during   partially preventable when athletes use ankle
preseason and season. These training com-        braces, orthoses or taping as means of ex-
ponents can be easily integrated into warm-      ternal protection. Especially, players with a
up routines and have even stronger positive      history of ankle injuries should be advised to
effects while athletes are not yet tired out.    use external ankle support to prevent
                                                 recurring injuries.
Technical and political measures
                                                 Medical and non-medical support
- Awareness raising
Continuous awareness of the positive contri-     - Pre-Season Screenings
bution of injury prevention measures to          At least for professional athletes it is recom-
sports performance is essential. Individual      mended to have a pre-season screening to
athletes and coaches and the responsible         detect potential risk factors for injuries, e.g.
staff in clubs and federations need to sys-      cardiovascular problems, muscular imbal-
tematically share information on basketball-     ances, athletic and neuromuscular deficits.
specific injuries, risk factors,                 Moreover performance diagnostics will help
injury mechanisms as well as available           to identify better the athlete’s individual
knowledge on effective, applicable               needs for a training programme to enhance
and acceptable countermeasures.                  his/ her physical condition. If this is carried
                                                 out under close supervision of coach and/ or
- Adaptation of the education programmes         physiotherapist this will contribute to in-
Athletes and in particular coaches should        crease overall performance and to reduce
receive at least a basic education in            acute and chronic injuries.
basketball injury prevention. The develop-
ment and implementation of a safety man-         To conclude
agement scheme at club level and at national
level should be one of the core learning ob-     Basketball associations and clubs should
jectives within current curriculums for con-     follow a pro-active strategy as to the risk of
tinuous education of coaches and club man-       injury and communicate with members and
agers.                                           the general public openly about risks in-
                                                 volved and necessary measures to be taken
- Restriction on number of matches               by clubs and individuals. Players should be
Sufficient regeneration will reduce overuse      provided with educational materials, such as
symptoms and acute injuries due to fatigue       brochures and video productions presenting
or inadequately cured disorders. Therefore,      basic exercises, which should be for instance
                                                 downloadable from the FIBA’s Coaching

                                                                                                    7
Website and national websites.                               University in Bochum and published under
                       Such a pro-active approach will also contrib-                the titles:
                       ute to the positive image of the game and the
                       organisations involved, and will help to at-                 · P. Luig & T. Henke, Inventory of the bur-
                       tract new members.                                             den of basketball injuries, existing preven-
                                                                                      tion measures and safety promotion strate-
                       It is recommended to have all national asso-                   gies, Ruhr University, Bochum, March
                       ciations to include an injury prevention mod-                  2010
                       ule in their trainer education curriculums and               · P. Luig & T. Henke, Best injury prevention
                       to designate an official staff member as                       measures and implementation of strate-
                       'safety promotion ambassador' of the federa-                   gies in handball and basketball, Ruhr Uni-
                       tion. And last but not least, all sustained inju-              versity, Bochum, November 2010
                       ries should be reported to trainers and                      · P. Luig & T. Henke, Safety in Sports,
                       coaches and should be systematically re-                       Safety management schemes in Basket-
                       corded at club an national level, in order to                  ball, implementation and testing, Ruhr Uni-
                       identify individual and situational risk factors,              versity, Bochum, August 2011
                       to monitor injury trends and to evaluate ef-
                       fects of measures taken.                                     For references to sources of information pre-
                                                                                    sented in this fact sheet and for further refer-
                       References                                                   ences, readers are advised to consult the
                                                                                    above mentioned reports which will be also
                       All information presented in this Factsheet                  accessible through the websites: http://
                       are based on studies carried out by the Ruhr                 www.safetyinsports.eu and http://
                                                                                    www.eurosafe.eu.com/

    Acknowledgements   This factsheet has been produced in the framework of the Safety in Sports project, initiated by the consortium
                       Kuratorium für Verkehrssicherheit (KfV), Ruhr University Bochum (RUB), European Association for Injury Prevention
                       and Safety Promotion (EuroSafe) and Consumer Safety Institute (CSI).

                       Co-sponsored by the European Commission under the Public Health Programme 2003-2008, and by ARAG Sports
                       Insurance Germany.

                       The research and piloting activities related to basketball have been carried out in close collaboration with the
                       European Basketball Federation (FIBA-Europe), which is the governing body for basketball in Europe, and the
                       Slovak- (SBA) and Swedish basketball federations.

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