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ROLE OF SPORTS VISION AND EYE HAND COORDINATION TRAINING IN PERFORMANCE OF TABLE TENNIS PLAYERS

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PAUL, M.; BISWAS, S. K.; SANDHU, J. S. Role of sports vision and eye hand coordination training in performance of table tennis players. Brazilian Journal of Biomotricity, v. 5, n. 2, p. 106-116, 2011. Successful performance in interceptive tasks depends upon the acquisition of visual information about the approaching object. The present study therefore evaluated the effects of sports vision and eye hand coordination training on sensory and motor performance of table tennis players. 45 University level table tennis players were randomly divided into 3 equal groups of n=15. The experimental group underwent 8 weeks of sports vision and eye hand co-ordination training. The placebo group read articles pertaining to sports performance and watched televised table tennis matches, while the control group followed only routine practice sessions for 8 weeks. Measures of visual function and motor performance were obtained from all participants before and immediately after 8 weeks of training. Statistically significant pre to post training differences were evident by better improvement in visual variables and motor performance for the experimental group as compared to placebo and control. The present study therefore concluded that visual training program improves the basic visual skills, which in turn are transferable into sports specific performance.
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Brazilian Journal of Biomotricity, v. 5, n. 2, p.106-116, 2011 (ISSN 1981-6324)
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ORIGINAL PAPER (ARTIGO ORIGINAL)
ROLE OF SPORTS VISION AND EYE
HAND COORDINATION TRAINING IN
PERFORMANCE OF TABLE TENNIS
PLAYERS
Maman Paul, Sandeep Kumar Biswas, Jaspal Singh Sandhu
Faculty of Sports Medicine & Physiotherapy, Guru Nanak Dev University, Amritsar,
Punjab, India.
Corresponding author:
Maman Paul
Faculty of Sports Medicine & Physiotherapy,
Guru Nanak Dev University,
Amritsar, Punjab, India- 143001.
Email: mamanpaul10@gmail.com
Tel no.: +919815459353
Submitted for publication: Mar 2011
Accepted for publication: May 2011
ABSTRACT
PAUL, M.; BISWAS, S. K.; SANDHU, J. S. Role of sports vision and eye hand coordination training in
performance of table tennis players. Brazilian Journal of Biomotricity, v. 5, n. 2, p. 106-116, 2011. Successful
performance in interceptive tasks depends upon the acquisition of visual information about the approaching
object. The present study therefore evaluated the effects of sports vision and eye hand coordination training
on sensory and motor performance of table tennis players. 45 University level table tennis players were
randomly divided into 3 equal groups of n=15. The experimental group underwent 8 weeks of sports vision
and eye hand co-ordination training. The placebo group read articles pertaining to sports performance and
watched televised table tennis matches, while the control group followed only routine practice sessions for 8
weeks. Measures of visual function and motor performance were obtained from all participants before and
immediately after 8 weeks of training. Statistically significant pre to post training differences were evident by
better improvement in visual variables and motor performance for the experimental group as compared to
placebo and control. The present study therefore concluded that visual training program improves the basic
visual skills, which in turn are transferable into sports specific performance.
Key Words: Table Tennis, Sports Vision, Reaction Time, Movement Time, Saccade, Depth Perception, Eye
Hand Coordination.
INTRODUCTION
Vision is one of the several sensory organs which receive information from the external
environment and for years it has been recognized that many sports place demands on
vision and particular visual skills. The earliest proponent of this concept was Galen, a
Roman Physician who in the second century believed that there is a relationship between
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ball sports, body and visual status (HITZEMAN & BECKERMAN, 1993). Inspite of this
early recognition of visual importance in sports it stood neglected for many years and it
was not before the middle of 20th century that new scientific opinions were developed and
the thought, “sports being a multidisciplinary approach” came into picture
(JAFARZADEHPUR & YARIGHOLI, 2004).
Sports Vision as such includes specific visual determinants which precisely coordinates a
player’s activity during the game. It has been seen that successful athletes generally have
better skill, accuracy and spatio-temporal constraints on visual information acquisition. As
such if two similar athletes meet in competition and one has a better trained visual system,
the athlete with enhanced visual system will perform better (LORAN & GRIFFITHS, 2001).
Sport activities often have a close relationship between perception and action therefore
temporally constrained sport tasks require that players extract the most valuable source of
visual information and use this information to quickly anticipate the opponent's movement
outcome (SHIM et al., 2006).
There are evidences which support the claims of vision playing an important role in the
perceptual ability of an athlete relating proportionately to his/her motor response. Revien &
Gabor (1981) stated that visual abilities affect sports performance and the acquisition of
motor skills, which can be improved with training. Supporting the same Quevedo et al.
(1999); stated that sports vision training is conceived as a group of techniques directed to
preserve and improve the visual function, with the goal of incrementing sports performance
through a process that involves teaching the visual behavior required in the practice of
different sporting activities. West & Bresson (1996) indeed indicated a positive effect on
the performance of cricketers to judge the length of ball after specific visual training
program. Salmela & Fiorito (1980), showed improved performance in hockey players,
when accurate pre shot visual clues were obtained. The results of several other studies
also assert the claim that visual skills training can improve sports performance (KLUKA et
al., 1996; WORRELL, 1996). Therefore it should hold true that if a subject’s visual system
is at higher level, then the overall performance will be at higher level as well (GRIFFITHS,
2002). Vision and reaction to visual stimuli in sport is therefore important in contributing to
performance enhancement and can be seen as a limiting factor in the differentiation
between elite and recreational sports participation (BAHILL & LA RITZ, 1984).
In regard to racquet sports where players are exposed to multisensory visual constraints,
the participant is required to perform inspite of visual uncertainty thereby tasking his/her
ability to predict the event. This prophecy of events can be seen as an interaction between
two systems namely, ‘software’ system of acquired skill prediction and ‘hardware’ system
of intrinsic visual ability (STARKES & DEAKIN, 1984; ABERNETHY & RUSSELL, 1987;
WILLIAMS et al., 1999). Although “hardware” skills are not the appropriate determinants of
an athlete’s superior ability (ABERNETHY, 1991; WILLIAMS et al., 1999) yet they can set
potential limit to the functioning of software skills (FERREIRA, 2003). The present study
therefore trained and measured both hardware and software visual skills specific to the
sport.
Table tennis as such is characterized by perceptual uncertainty and time pressure. Being a
dynamic sport it involves an incessantly varying visual environment. In order to respond to
such a variable stimulus the player requires a superior acquisition of visual information
about the impending object. As such the ability to hit the ball requires continuous
convergence of eyes, assessing the speed of the ball and predicting its path which moves
rapidly in space without any spatial clue. Further when trying to intercept an approaching
object, the players have to deal with the time latency essential to alter the motor
commands based on sensory visual information. Thus, if the visual system is not receiving
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information accurately or quickly enough, performance may suffer. For example, in table
tennis serve, ball flight time is approximately 800ms, during which the opponent must
select an appropriate trajectory for the racquet based on the information available early in
ball flight (RODRIGUES et al., 2002). It is therefore important for visual systems to be
functioning at advanced levels because player’s performance can be one of the most
rigorous activities for the visual system.
Table tennis has long been practiced to train for visual and coordination activities specific
to other sports but the sport itself was ignored for its training specificity; which is a major
factor determining sports training. Willmore & Costill (2004) in their Principle of Speficity
stated that, “The training program must stress the physiological systems that are critical for
optimum performance in the given sport”. The statement indicates that speficity is anything
that works a body system in conditions similar to the actual sport. Complying to the same
Zupan et al. (2006) stated that training specificity indicates that athletes should train like
they compete, meaning a cyclist will compete better in cycling if he/she trains riding the
bike as compared to practicing running. Therefore it is essential to determine the skills
specific to the sport in order to train them specifically and attain improvement and
excellence in performance. Relating to this concept table tennis being a dynamic sport,
training of sensory and motor system may influence the expert performance (SEVE et al.,
2003).
Although theories state vision as an essential adjunct to motor ability, its training effect on
performance enhancement stands debated. Per se the studies contradicting the positive
effect of sports vision training (ABERNETHY & WOOD, 1997, 2001; COHN & CHAPLIK,
1991) have been sceptic as are the studies supporting (REVIEN & GABOR, 1981; MC
LEOD & HANSEN, 1989; KLUKA et al., 1996) such claims. A reason to this may be that,
the studies claiming to prove a positive relationship between visual training and athletic
performance are lacking in proper scientific design, as is the case with studies that try to
disapprove such a relationship (WOOD & ABERNETHY, 1997). As such to substantiate
the claims of sports vision training augmenting sports performance, and its role in specific
sport of table tennis the present study was designed.
MATERIAL AND METHODS
Participants
Forty Five university level table tennis players both male and female aged between 18-28
years from District Table Tennis Academy, Amritsar participated in the study. The
participants who volunteered for the study completed a screening questionnaire, which
consisted of questions regarding visual examination, ocular abnormalities, eye hand
dominance, years of playing, level of play and prevalence of injury. The subject with 6/6
vision were selected and those with refractive errors or any musculoskeletal injuries were
excluded from the study. After initial screening a written informed consent was obtained
from participants. The study was approved by Institutional Medical Ethics Committee of
Guru Nanak Dev University, Amritsar.
Study design
The study was experimental with different subject design. The subjects were randomly
assigned to three equal groups- experimental (n=15), placebo (n=15), and control (n=15).
Placebo group was taken to exclude possible Hawthorne Effect and to ensure that the
effects had actually occurred because of training.
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Parameters
The present study included visuo-motor parameters that are critical for table tennis play at
any level. Pre and post training data from following parameters were collected. Before
testing procedure the subjects were acquainted to the apparatus and tests, and underwent
one practice session.
Choice Reaction and Movement time: In the present study choice reaction and movement
time was measured using Reaction timer (Moyart, Lafayetee, U.S.A) for dominant side.
Depth Perception: This visual ability was assessed using Electronic Howard-Doloman
Device, (DP-129, Medicaid System, India). In this the subjects were asked to align a
central movable rod to two stationary rods from a distance of 4.5m. Alignment of central
rod which the participants deemed as correct and number of attempts taken to align it was
displayed on LCD panel and impulse counter respectively.
Saccadic eye movement: Ocular motility in the horizontal and vertical planes was
measured using two modified Hart charts (ZUPAN et al., 2006).
Accommodation: Accommodation was measured as the number of letters read in one
minute from a near and far chart kept at a distance of 0.15 m and 6 m respectively
(ZUPAN et al., 2006).
Eye Hand Coordination: Eye hand coordination was tested on Vienna testing system
(Schuhfried, Austria) using Double labyrinthine test. Participants in the test controlled an
onscreen animated ball from contacting a continuously varying path using two hand held
knobs. After the session the results were displayed as number of errors each time the ball
touched the boundary.
Sports Specific Performance Assessment: The evaluation of player’s performance pre and
post training was done using Alternate Push Test (PURASHWANI, DATTA &
PURASHWANI, 2010). For test administration the participants were asked to make
number of rallies of alternate counter (one forehand and one backhand) at the left corner
of the table with the controller for a period of 30 s after sufficient warming up and practice.
Scoring was done as maximum number of returns out of two chances of 30 s each. All
assessment sessions were supervised by district level coach (Certified by Table Tennis
Federation of India).
Training Protocol
Group-I: Experimental Group
Participants in this group underwent visual and eye hand coordination training for 8weeks,
3 days per week along with regular table tennis practice. Each session lasted for
45minutes. The training protocol involved the following procedures:
1) Eye exercises included swinging ball or marsden ball and swinging ball with pointed
finger exercise for eye hand coordination, brock string exercise for training spatial location
and marbles in a carton exercise for peripheral awareness (REVIEN & GABOR, 1981).
2) Hart Chart and Near and Far Chart therapy (ZUPAN et al., 2006).
3) Depth perception training: The participants were trained for depth perception on
Electronic Howard-Doloman Device, (DP-129, Medicaid System, India). The training
procedure involved aligning a central movable along with two stationary rods within an
illuminated box using a hand held electronic control. The participants were encouraged to
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align the rods with minimum number of attempts and increasing distance from 3, 3.5, 4
and finally 4.5 m as the training progressed.
4) Reaction and movement time training: Reaction and movement time for the players was
trained on Reaction timer (Lafayeete, Moyart, U.S.A). To train for afore mentioned
parameters the participants were instructed to respond to visual stimulus following a ‘cue’.
The response by the participant involved pressing the button corresponding to the visual
stimulus represented by green light emitting diodes. The initial ‘cue’ delay was set at 1.2 s
which was progressively reduced to 0.2 s.
5) Eye hand coordination training: Eye hand coordination training was performed on
Vienna Testing System (Schuhfried, Austria). During the training process the participants
held two joysticks in either hand and traced a ball displayed on the screen along a path
without touching the boundaries in minimum possible time and error.
Group II: Placebo group.
Members of this group were given simple reading material and watched televised table
tennis matches for 8 weeks. All participants in this group were given statement about the
positive effect of reading and knowledge on sports performance during the study period
apart from regular table tennis practice.
Group III: Control group.
The participants in this group undertook only regular table tennis practice.
Data Analysis
The data was obtained from the described tests and was analyzed using the Statistical
Package for Social Sciences (SPSS)/17.0 (Copyright © SPSS Inc.). Each of the variables
of visual and motor performance were analyzed to determine if there was significant
difference between pre to post training values and whether these changes were influenced
by the particular training conditions. Statistical tests used to analyze the present study
were paired t-test, one-way ANOVA and multiple range Scheffe’s test.
RESULTS
The pre to post training results of paired t-test for reaction time showed a statistically
significant improvement in experimental group (t=13.068, p<0.001) as compared to
placebo (t=2.049, p>0.05) and control (t=0.014, p>0.05) which presented non-significant
variation. Similarly for movement time the experimental group (t=18.767, p<0.001) showed
significantly better improvement post training as compared to placebo (t=2.016, p>0.05)
and control (t=1.244, p>0.05). One way ANOVA with post hoc (Table 2) also indicated that
the experimental group developed faster reaction and movement time as compared to
placebo and control group post training.
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Table 1 - Descriptive statistics (Mean+ Standard Deviation) of all visual skills & eye hand
coordination.
RT- Reaction time (ms), MT- Movement time (ms), HS- Horizontal saccade, VS- Vertical saccade, AC- Accommodation,
DLT- Double labyrinthine test. (***) Significant p<0.001; (**) Significant p<0.01; (*) Significant p<0.05; NS- Non
Significant.
Comparison of pre to post test findings for variables determining depth perception
predicted statistically significant training variation. Experimental group for both chance
(t=2.739, p<0.05) and impulse (t=7.040, p<0.05) showed a significant change in contrast to
placebo (t=2.092, p>0.05; t=2.210, p>0.05) and control group (t=0.459, p>0.05; t=0.533,
p>0.05) for both chance and impulse respectively. One way ANOVA with post hoc test
(Table 2) revealed similar outcome.
Table 2 - Results of One Way ANOVA and Scheffe’s Post Hoc Comparison for Visual Variables,
Eye Hand Coordination & Performance Evaluation Score.
(***) Significant p<0.001; (**) Significant p<0.01; (*) Significant p<0.05; NS- Non Significant.
Ocular motility defined by horizontal saccade, vertical saccade and accommodation in the
present study delivered a positive post training response for the experimental group.
Experimental group for horizontal saccade showed a statistically significant improvement
(t=14.983, p<0.001) as compared to placebo (t=2.674, p<0.05) and control (t=2.514,
p<0.05). Similar response was consistent for vertical saccade with experimental group
(t=15.6, p<0.001) having a better pre to post training change than placebo (t=2.750,
p<0.05) and control (t=2.827, p<0.05). Supporting the changes in other visual variables
experimental group’s facility for accommodation post training (t=2.493, p<0.05) also
exhibited improvement as opposed to placebo (t=0.849, p>0.05) and control (t=2.103,
p>0.05). One way ANOVA with post hoc test showed greater increase in saccadic and
accommodative scores for the experimental group (Table 2).
Post training findings for double labyrinthine test featured as the experimental group
(t=9.413, p<0.001) showing better statistically significant improvement in relation to
placebo (t=2.263, p<0.05) and control (t=2.168, p<0.05). One way ANOVA with post hoc
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testing showed statistically significant difference between groups with higher gains in
experimental group (Table 2).
Following trail to improvement in visual variables and eye hand coordination, motor
performance of the players also showed significant change. Pre to post training data
analysis showed statistically significant improvement in performance evaluation scores for
experimental (t=6.313, p<0.001) group as compared to placebo (t=2.358, p<0.05) and
control (t=2.168, p<0.05).
DISCUSSION
Visual sensory input may account for up to 85-90% of the sensory input of an athlete
during an athletic contest (ZUPAN et al., 2006). Being the first step of information
processing vision forms an important component of successful sports performance. As
such an athlete’s ability to vary his visual determinants and coordinated movement in
interceptive task add to his skills. Pertaining to the distinctive role of vision in sports, there
has been claims that the use of visual training programs can be productive in player’s
performance.
Parallel to these claims the results of the present study indicated a significant improvement
in visual variables for the experimental group. These findings are consistent with the
literature reviewed by Cohen (1988), which revealed that a constructive visual training
program improves the visual skills in athletes.
The improvement in visual abilities is in conjunction to human motor learning behavior,
which involve learning of new skills and even refining of existing skills with repetition.
Relating to this principle, the continuous repetition of vision exercises and task lead to
improvement in visual skill variables.
The visual facility of saccadic motility & accommodation, which plays a significant role
during visual challenges in dynamic sport of table tennis showed improvement in the
experimental group post training sessions. These improvements can be in relation to the
hypothesis that frequent training of the visual system should lead to stronger muscle fibers
and more efficient neuronal response (ZUPAN et al., 2006). Also as saccadic eye
movements are used for fixation of vision on ball (RIPOLL & LATIRI, 1997), during play the
player with superior saccadic latencies can pick up the trajectory of the ball early and more
accurately. This advantage was seen in the performance of experimental group.
Adding to the visual ability of saccadic eye movement accommodation also has a role to
play. Accommodation is the perceptual interpretation of the information at a subliminal
level. This is where the processing is done without conscious processing to develop
strategies, react to variation and making good contact between racquet and the ball.
Accommodation acts like a reflex, but can also be consciously controlled and trained.
Jafarzadehpur and Yarigholi (2004) showed significant differences between facility of
accommodation and acuity in champions and normal non players, stating that the
development of these two parameters may improve the efficiency of visual system.
In quick interceptive task of table tennis where the ball moves rapidly in space with a flight
time of approximately 800 ms and without any spatial clue, an advance reaction and
movement time becomes a deciding parameter of performance. In the present study
experimental intervention showed productive results for both reaction and movement time.
The improvement in both the parameters may be in response to enhanced neural linkage
and pathway between sensory perception and motor response. Also vision training can
improve accuracy of the motor response by more precise visual location assessment.
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These visual location assessment can be in regard to perceptual skills, such as detecting
the presence of a ball in briefly presented sport scenes (ALLARD & STARKES, 1980);
making efficient search for relevant, informative parts of the opponent’s body and fields
(ABERNETHY & RUSSELL, 1987; GOULET et al., 1989; WILLIAMS et al., 1994); or
anticipating the ball direction and the opponent’s action from advance information
(ABERNETHY, 1990; JONES & MILES, 1978; WILLIAMS & DAVIDS, 1998). As such a
player with good sensory visual ability has the luxury of increased time to react to the
stimulus before it has occurred thereby reducing the overall reaction and movement time
during the game.
In order to hit the ball at right time a player must also gaze the distance of the ball
precisely. The three dimensional location of the distance is the property of the visual
system for depth perception which again improved with training. Appropriate perception of
depth in players is essential for the motor system to position the body before the hit.
Further to make the proper hit the sensory visual and motor system must be well
coordinated. This is what signifies the eye hand coordination i.e. the ability of the visual
system to guide the motor system (TANIGUCHI, 1999). Good eye hand coordination
increases the player’s ability to perform complex movement, respond effectively to external
stimuli and create fluent movement. In relation to table tennis eye hand coordination helps
the player in proper positioning of the racquet as well as control the arm velocity and
direction of hit (RODRIGUES et al., 2002). The players in the study showed improvement
in accordance to afore mentioned responses for experimental group. This improvement in
eye hand coordination apart from modified neural linkages can also be explained on the
hypothesis of spatial and temporal coupling of eye and hand as long as the motor reaction
relies on visual information (SAILER et al., 1999).
The improvement in various sensory and motor skills post training can be transferable in
performance during actual sports. In the present study a significant improvement in
performance post training for experimental group was seen. The improvement showed 9%
increase in performance evaluation score. According to the fundamental principles of
specificity, this improvement can be attributed to visual training as in the present study
those visual skills that are critical for table tennis performance were trained. It is important
to note that none of the players involved in this study, had any previous experience of
specific visual training thus, those software and hardware visual skills would have been
improved by constructive visual training program and do not just develop automatically.
Thus the findings of the present study is in contrast to Wood and Abernethy (1997), and
Abernethy and Wood (2001) who in their study attributed the improvement in performance
to acquaintance with the test procedure rather than vision training, however they included
a very small sample. Also familiarity with a piece of equipment can only account for
improvement during the first few tests/practice cycles. Long-term improvements should be
attributed to changes in the body whether mental or physical (RUSSO et al., 2003). It is
also note worthy that placebo and control group also showed some improvement in
performance, this increment can be attributed to the regular supervised table tennis
sessions.
The study therefore concluded a causal relationship between improvement in visual
abilities post training and performance of players. There may be several reasons why the
visual training program used in this study was effective, though several studies by
optometrist showed no such improvements after visual training. One such reason could be
that the frequency and duration of training given in previous studies was insufficient for
improvement to be observed. Secondly researchers also neglected use of suitable tests to
measure the transfer of development to performance in competitive situation.
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Though there being contrasting claims about visual adaptations post training, visual
abilities remain an inseparable part of an athlete’s performance and skill. As such an
individual who can process more visual information in a shorter period and make the
proper response will have an advantage in competition (ADAM & WILBERG, 1992).
PRACTICAL APPLICATION
Athletes and coaches are in continuous search of newer and better techniques to enhance
performance, and vision playing a particular role in athletic ability can form a platform for
this search. The results of the present study indicate that the visual skill and eye hand
coordination training program improves the basic visual and motor skills of the table tennis
players. Also the improved visual skills were transferable into the performance as seen by
improved performance evaluation scores for experimental group. As such a specific visual
training program targeted to a particular sport can be productive for the performance of an
athlete.
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... Performa olahraga atlet dipengaruhi oleh beberapa faktor, yaitu: kondisi fisik (komponen fisik), biomekanik, kognitif, Kesehatan, dan visual faktor (penglihatan) (Laby & Kirschen, 2018;Richard et al., 2014). Sport vision atau penglihatan pada olahraga merupakan sistem yang mempunyai andil penting dalam performa atlet pada semua cabang olahraga (Laby & Kirschen, 2018;Paul et al., 2011;Rodrigues, 2020). Indera penglihatan berperan sekitar 83% bagi atlet untuk melaksanakan kemampuan olahraganya karena 83% informasi yang sampai ke otak dibawa melalui indera penglihatan (Paul et al., 2011). ...
... Sport vision atau penglihatan pada olahraga merupakan sistem yang mempunyai andil penting dalam performa atlet pada semua cabang olahraga (Laby & Kirschen, 2018;Paul et al., 2011;Rodrigues, 2020). Indera penglihatan berperan sekitar 83% bagi atlet untuk melaksanakan kemampuan olahraganya karena 83% informasi yang sampai ke otak dibawa melalui indera penglihatan (Paul et al., 2011). ...
... Atlet elit menghadapi tuntutan visuo-motorik untuk pengambilan keputusan dalam waktu yang sangat singkat (milidetik) untuk mengubah visual menjadi tindakan pada saat berlatih atau bertanding (Paul et al., 2011;Zupan et al., 2006;Zwierko et al., 2015). Oleh karena itu penglihatan merupakan faktor yang sangat penting bagi atlet untuk berprestasi (Kirschen & Laby, 2011). ...
Article
ABSTRAK Skrining gangguan penglihatan dan edukasi Kesehatan mata pada atlet selama masa pandemi Covid-19 merupakan suatu upaya untuk meningkatkan Kesehatan mata atlet. Gangguan Kesehatan mata akan berdampak terhadap aktivitas olahraga sehingga akan mempengaruhi prestasi. Kegiatan pengabdian ini bertujuan untuk melakukan skrining gangguan refraksi dan memberikan edukasi tentang cara menjaga Kesehatan mata selama masa pandemi Covid-19 pada atlet Provinsi Aceh. Kegiatan ini dilakukan bulan Agustus 2021 di SMAKON Banda Aceh terhadap 62 atlet (n=19 Wanita dan n=43 laki-laki). Kegiatan yang dilakukan meliputi: pemeriksaan refraksi menggunakan kartu Snellen dan Trial lens, memberikan edukasi mengenai Kesehatan mata, dan memberikan follow-up bagi atlet dengan gangguan refraksi. Jumlah atlet pria dan wanita dengan visus normal (ametropia) adalah sebanyak 91,94%, sedangkan atlet pria dan wanita dengan visus tidak normal adalah sebanyak 8,06%. Setelah pemberian edukasi atlet mengetahui bagaimana cara menjaga kesehatan mata selama masa pandemi. Atlet dengan gangguan refraksi dirujuk ke fasilitas Kesehatan untuk mendapatkan penganangan lebih lanjut. Terdeteksinya gangguan refraksi (miopia) pada atlet sehingga dapat memberikan intervensi yang sesuai untuk mencegah progresivitas. Atlet dengan masalah gangguan penglihatan mendapatkan penanganan yang tepat oleh dokter spesialis mata. Terjalinnya kerjasama antara Fakultas Kedokteran Universitas Syiah Kuala dengan mitra sehingga kegiatan ini akan berkesinambungan. Kata Kunci: Gangguan Refraksi, Kesehatan Mata, Masa Pandemi Covid-19, Atlet ABSTRACT Screening for visual impairment and education on eye health in athletes during the COVID-19 pandemic is an effort to improve the eye health of athletes. Eye health problems will have an impact on sports activities and affect achievement. This activity aims to screen for refractive disorders and provide education on taking care of eye health during the COVID-19 pandemic in athletes from Aceh Province. This activity was carried out in August 2021 at SMAKON Banda Aceh for 62 athletes (n = 19 women and n = 43 men). Activities carried out include refractive examination using Snellen cards and Trial lenses, providing education about eye health, and providing follow-up for athletes with refractive disorders. The number of male and female athletes with normal vision (ametropia) was 91.94%, while male and female athletes with abnormal vision were 8.06%. After providing education, athletes know how to maintain eye health during a pandemic. Athletes with refractive disorders are referred to health facilities for further treatment. Refraction disorders (myopia) are detected in athletes so that appropriate interventions can be provided to prevent progression. Athletes with visual impairment problems get proper treatment from an ophthalmologist. The establishment of collaboration between the Faculty of Medicine, Syiah Kuala University, and partners so that this activity will be sustainable. Keywords: Refraction Error, Eye Health, Pandemic Covid-19, Athletes
... 4 Not surprisingly, therefore, athletes and coaches are in continuous search for new and better ways to enhance sports performance, with vision often forming the basis for this search. 5 The term 'sports vision' is used to describe vision care services provided to athletes. 2 As early as the second century, Claudius Galen, the most famous Greek physician during the Roman period (129-200 AD), as well as a brilliant anatomist and pioneer of experimental physiology, 6 believed that ball sports, body and visual status were interconnected. ...
... In their study, Paul et al. 5 found that eye-hand coordination training improves the basic visual and motor skills of table tennis players; the improved performance was noticeable in the improved performance evaluation scores of the experimental group. The noticed improvements are in agreement with Du Toit et al., 32 who maintained that sports vision is an integral part of the holistic approach to improve performance on the field and should not be taken for granted. ...
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Background: Visual skills and their components are thought to be responsible for much of the manner whereby athletes obtain information about the sporting environment. The field of sports vision deals with the vision care services that are provided to athletes. If visual skills of athletes are not assumed as natural attributes, they should be assessed and be subjected to training according to need. Studies have shown that the visual abilities of the athletes can be divided into software and hardware visual skills, and it is the software visual skills that separate expert athletes from non-experts. Aim: The study aims to collate (1) studies that show the importance of visual skills in sports performance, (2) studies that show that visual skills are trainable and (3) studies that show the effect of training on the visual skills and performance in sports. Method: An extensive search of literature was performed on studies that supported the importance of vision in sports performance. Also included were studies that supported the transfer of improved visual skills to improved performance on the field of play. Results: There is literature that supports the significance of visual skills in sport. There is also literature that attempts to show evidence that improved visual skills can improve performance on the field of play. Conclusion: Sports vision practitioners need to develop standardised testing and training protocols for visual skills. Standard protocols will harmonise the development of visual skills norms. Contribution: Literature has shown the importance of vision in sports performance. Literature has also shown that improved visual skills can improve performance on the field of play. The current paper is an attempt at calling for the development of standardised protocols and norms for sports vision training.
... Chang [18] compares normal vision, corrected vision and uncorrected vision in junior soft tennis players and the result shows that the normal vision group was better than the corrected vision group in terms of depth vision and dynamic vision. Mazyn et al. [19] , Biswas et al. [20] , Tate et al. [21] , Smith [22] , Mitroff [23] , and Appelbaum et al. [24] , all used experimental methods to study the effects of sports vision training on the relevant sport skills of tennis, table tennis, cricket and hockey players. Through experimental intervention, athletes in the experimental group demonstrate better sports performance and visual skills than the control group. ...
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Background Motor coordination plays a crucial role in the overall physical development of primary school students. However, targeted training for motor coordination skills in this age group is often lacking in physical education programs. This study aims to investigate the impact of sports vision training on primary school students' motor coordination. Methods The study involved primary school students at three different grade levels. Sports vision training was implemented in the experimental group during their physical education classes, while the control group received standard physical education instruction. Various aspects of sports vision, including static visual acuity, dynamic visual acuity, visual focus, visual tracking, peripheral vision, image fusion flexibility, depth perception, visualisation, hand (foot) eye coordination, instant vision, and visual concentration, were assessed before and after the training period. Motor coordination skills, spatial orientation ability, balance ability, and cognitive ability were also measured. Results The results indicate that scientific sports vision training methods effectively improved key motor visual abilities in primary school students. These improvements were closely linked to body movement-related nerves. Specifically, students showed enhancements in static and dynamic visual acuity, visual focus, peripheral vision, hand (foot) eye coordination, and other sports vision skills. These improvements positively impacted their spatial orientation ability, balance ability, and cognitive ability, contributing to the development of motor coordination. Conclusions Sports vision training can be an effective method to enhance primary school students' motor coordination. By improving their visual skills and coordination, students can better navigate physical activities and develop a strong foundation for their overall physical development. This study highlights the importance of integrating sports vision training into primary school physical education programs to promote healthier and more coordinated young athletes.
... Grigore et al. [2] show that systematically practising sports where there is direct contact with an opponent is an effective way of developing abilities associated with increased efficiency and eye-hand coordination at low and high speeds. There is a close relationship between perception and activity in people actively practising sports; in the foretime, limited tasks sports require players to extract the most valuable source of visual information and use this information to quickly predict the outcome of an opponent's move [8]. The ability to anticipate the movement of the opponent and ball, reaction to pitch situation, decision-making, speed of perception, and a high level of sensory efficiency and motor abilities have an impact on the achievement of sports success [3,9,10]. ...
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Background One of the most popular varieties of rugby is Rugby Union, in which a team consists of 15 players. Rugby Union is a full-contact sport, and players must demonstrate strength, endurance, speed and agility. During the match, players participate in multiple physical collisions and tackles, short-duration and high-intensity sprinting efforts. In addition, one of the elements affecting the effectiveness of the player’s game can be the reaction time of the rugby player to the visual stimulus and the ability to read the game and react to the situations on the pitch. The level of psychomotor abilities of a person or a player practising sports can be influenced by various factors, including age, body height, body weight, type of sport practised or level of training. The study aimed to analyse the psychomotor abilities of professional rugby union players, investigate the relationship between the selected anthropometric characteristics and psychomotor abilities, and compare obtained results with the control group. Methods The study covered 22 players of the Polish National Team (age: 29.3 ± 5.4) and 27 students in the control group (age: 24.3 ± 3.9). The tests were carried out using the Test2Drive computer system of tests. For psychomotor abilities analysis, four tests were used: Simple Reaction Test, Choice Reaction Time Test, Hand-Eye Coordination Test and Spatial Orientation Test. The statistical analysis compares groups using basic statistical measures, and statistically significant differences between groups were checked. In addition, multiple linear regression was used. Results The analysis showed statistically significant differences between the groups in the simple reaction time test and the movement time for the test assessing reaction time with choice and eye-hand coordination. Multiple regression analysis conducted for both groups showed a statistically significant influence of some anthropometric parameters on the examined psychomotor abilities. The calculated multiple regression models had a high fit. Conclusions The analysis showed that professional Rugby Union players have shorter movement time than the control group. For reaction time, statistically significant differences were observed only for simple reaction time. Moreover, linear regression analysis showed that body height and weight affect the selected psychomotor abilities.
... Millard et al. reported that first-division rugby players have superior hand-eye coordination compared to non-athletes [51]. Paul et al. demonstrated that players' eye-hand coordination and sports skills improved after the training [52]. The phenomenon of heightened hand-eye coordination and the cultivation of adaptable visual attention, decision-making, and action execution in athletes is common in open-skill sports like rugby and soccer. ...
... This is the ability to combine hand movements with the eyes, thereby activating the eyes to send important signals to the brain to make hand movements [38]. Previous studies have also reported that hand-eye coordination can improve players' skills to perform complex movements and respond to external stimuli efficiently [39]. ...
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Physical condition is an important factor affecting dribbling skills in field hockeys. In this regard, agility, hand-eye coordination, and waist flexibility have not been investigated simultaneously in field hockey players. Therefore, the purpose of this study was to evaluate the effects of agility, hand-eye coordination, and waist flexibility on dribbling skills in senior high school female field hockey players. Thirty female senior high school students in Indonesia were recruited as the research sample. The participants were female students involved in coaching field hockey extracurricular activities at school, average age 17.90 ± 0.80 yrs, height 159.17 ± 1.82 cm, body weight 53.60 ± 3.51 kg, and BMI 21.16 ± 2.89. Data were collected using the agility t-test, throw catch test tennis ball, sit and reach test, and Schmithals-French hockey test. They were then analyzed using correlation and regression. The results showed that agility, hand-eye coordination, and waist flexibility had a significant effect on dribbling skills (p < 0.05). Partially, the effects of agility, hand-eye coordination is 37.40%, and waist flexibility were 76.30 %, 37.40 %, 46.20%, and 84.00%, respectively. Of these three components, agility is the most influential component of dribbling skills, without neglecting hand-eye coordination or waist flexibility. In conclusion, the level of agility, hand-eye coordination, and waist flexibility have a significant impact on dribbling skills in senior high school female field hockey players. Coaches should prepare and develop appropriate training programs for these three components to improve hockey dribbling skills. Future studies are needed to incorporate the physical component and other factors related to field hockey dribbling skills, as well as diversity, and a wider sample size.
... Visual training has the potential to develop the visual system (10,11) so it is critical to understand the impact of visual training on the game of netball. Knowledge of the demands placed on the visual system by netball, as well as the effect of visual training, may influence the management and coaching of these athletes in general (11). ...
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Background. Many sports place demands on vision and certain visual skills, and this has long been acknowledged. Among all activities, athletic performance places some of the highest demands on the visual system. Sports vision's fundamental component is the growth and improvement of an athlete's visual ability. Objectives. To identify a variety of visual skills essential to netball players. Methods. Studies were obtained from the following databases: EBM international e-catalogues. A keyword search yielded MeSH headings; "visual skills, "hand-eye coordination", "peripheral vision", "eye movements", "netball vision", "netball rules", "reaction time", "speed of recognition", "accommodation facility," "visual memory", "discriminating efficiency", "visual endurance", "motor learning" and "cognitive function" which were combined and exploded. Results. This study used 65 full-text English-language papers from 90 citations found through electronic searches. 40 Articles remained after removing duplicates and reviewing the full-text versions. Conclusion. The evidence in this study reveals that, although current research still frequently concentrates on visual skills, there is a need to narrow this attention to the requirements of a certain sport. Additionally, identifying the visual abilities necessary for netball, enables talent identification, effective training, and testing of these abilities.
Article
En las últimas décadas, se ha incrementado la atención sobre la relación de las habilidades visuales y el deporte. No obstante, son pocas las investigaciones realizadas sobre este tema en deportes paralímpicos y, en particular, aquellas que indaguen sobre la percepción de la influencia del sistema visual en el desempeño deportivo de los atletas. El objetivo de este estudio fue determinar la percepción de los jugadores de rugby en silla de ruedas sobre la influencia del sistema visual en el deporte. Se incluyeron quince deportistas pertenecientes a la selección paralímpica de rugby de Bogotá y Cundinamarca, a quienes se les realizó una entrevista semiestructurada. Dentro de los resultados analizados se encontró que para los participantes el sistema visual brinda diferentes beneficios en su desempeño deportivo, pues ofrece información general y específica del juego como la localización de la pelota, de los jugadores y de los rivales en la cancha. Desde su perspectiva, permite la discriminación de distancias y ayuda en la correcta ejecución de las acciones motrices. En conclusión, los jugadores destacan el aporte del sistema visual en la ejecución adecuada del rugby, gracias a la interpretación de la información que reciben del medio; resaltan la importancia de las habilidades físicas como la resistencia, la fuerza y la velocidad, al igual que las habilidades mentales, como la lógica y la concentración.
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The monitoring of coordinative abilities in sports applications is often carried out by trainers that adopt subjective protocols and evaluations not supported by repeatable and reproducible measurement setups. This often leads to unreliable evaluations that do not allow us to quantify the positive or negative effect of some training in a simple way. In this scenario, the rapid spreading of wearable devices able to capture human movements providing data to the users could be a useful instrument to face the problem of simplifying the development of automated, repeatable, and reproducible measurement procedures easily adoptable by a community of athletes or coaches. Following this path, the paper proposes an automatic measurement protocol for the assessment of coordinative abilities based on the use of IMUs embedded in wearable devices. A new protocol based on the ruler and tapping tests and a set of objective key performance indicators, derived from IMU measurements, to evaluate the outcome of the test is then developed. In detail, the protocol is based on the sequence 1) ruler test; 2) tapping test; 3) ruler test. The tapping test is performed until energy exhaustion to try and identify, from inertial data, features that can describe possible fatigue effects and correlations with reaction time. Ruler tests are adopted to evaluate the reaction time. The first ruler test provides reaction time information in rest conditions, while the last one considers it after a repeated movement. The comparison of these two times will show whether the reaction time changes after a fatigue condition. An algorithm capable of calculating the number of tapping and the reaction time of each subject is implemented to evaluate the accelerometric data acquired during the tests. Therefore, the impact of the work is twofold: from an engineering point of view, the automation and performance evaluation of the proposed algorithm is provided; from a sport-medical perspective, the main finding is a general reduction of the reaction time after the energy-exhausting tapping test, as if this last could be considered as a powerful warm-up exercise for sports people. Two are the main results achieved: i) the proposed protocol allows a reduction of the reactions time in about the 83% of cases; ii) the proposed measurement system allows obtaining, regarding the tapping test, additional very useful quantities as the tap intertemps, frequency spectra, and acceleration excursions, which typically are not provided in state-of-the-art tapping test execution.
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A table tennis player should fixate at different distances; track the objects with different speed, and in different visual environment. Their visual skills must be well developed for these capabilities. Therefore, visual acuity in reduced lumination and facility of ocular accommodation those are two criteria for visual skills have been compared in table tennis players and normal non-players. Twenty-nine young table tennis champions and 29 normal matched non-players (did not take part in any racket sports game) were evaluated. Basic visual and eye examinations were done for both of them. Normal results in basic examination were fundamental requirement for all the subjects. +/-2.00 sphere lenses for accommodation facility are used. An electrical current regulator changed the output light intensity of a conventional chart projector (Topcon). Light intensity decreased to 10 cd·m -2 and visual acuity tested. In comparison of visual acuity in reduced lumination and facility of ocular accommodation in table tennis champions and non-players there are significant differences (p < 0.001). In the preliminary visual tests there was not any significant different in the two groups but the results in the top level table tennis player was very uniform and in every test and the standard deviation was lesser in tennis player group than non-players. These results show that motor and sensorial functions of expert players are well developed. That is consistent with other researchers. This result was interpreted as reflecting a better perceptual system of experts to the constraints encountered during table tennis and its use in practical settings for evaluating athletes or detecting sport talents. However some visual and perceptual training that usually used in orthoptics can be used for novice table tennis player to improve their abilities.
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10 male and 10 female students in physical education aged 19 to 23 yr. were each randomly assigned to both the experimental and control groups. Experimental subjects were given the 4-wk. Eyerobics visual skills training to assess its effects on static balance performance as measured on a balance stabilometer. Analysis indicated that the women performed significantly better than the men over-all. Balance performance by the trained group improved significantly.