🎾 Footwork - Kỹ Thuật - Used - In - Table - Tennis¶
Giới Thiệu¶
Footwork - Kỹ Thuật - Used - In - Table - Tennis — tài liệu 8 trang từ thư viện sách tennis.
Chủ đề chính: Lob, Tâm lý, Bộ pháp
Tóm tắt nội dung (trích từ tài liệu gốc): Footwork techniques used in table tennis: a qualitative analysis Malagoli Lanzoni Ivan, Lobietti Roberto, Merni Franco University of Bologna, Faculty of Exercise and Sport Science, Italy FOOTWORK TECHNIQUES USED IN TABLE TENNIS: A QUALITATIVE ANALYSIS Abstract INTRODUCTION Footwork and steps (one step, side to side, slide step, "turn" step, cross step, and combinations of these steps) are fundamental in table tennis. Players should use the best technique for guarantying the shortest time to arrive in the right position, that gives the possibility to play the best shot. AIM OF THE STUDY This st
Lưu ý: Nội dung dưới đây được trích xuất tự động từ PDF gốc tiếng Anh, giữ nguyên ngôn ngữ để bảo toàn độ chính xác kỹ thuật.
Nội Dung Gốc (Tiếng Anh)¶
Footwork techniques used in table tennis: a qualitative analysis
Malagoli Lanzoni Ivan, Lobietti Roberto, Merni Franco
University of Bologna, Faculty of Exercise and Sport Science, Italy
FOOTWORK TECHNIQUES USED IN TABLE TENNIS: A
QUALITATIVE ANALYSIS
Abstract
INTRODUCTION
Footwork and steps (one step, side to side, slide step, "turn" step, cross step, and
combinations of these steps) are fundamental in table tennis. Players should use the
best technique for guarantying the shortest time to arrive in the right position, that
gives the possibility to play the best shot.
AIM OF THE STUDY
This study aims to define the different footwork techniques used by table tennis
players. To compare different footwork techniques for giving useful suggestions to
coaches and implementing better training for players, from a technical and physical
point of view.
METHODS
1. Analysis of 2 matches of 4 male players from 2006 World Team Table Tennis
Championships (videos recorded from television). During that competition the
players were the n� 1 (Wang Liqin), 2 (Timo Boll), 4 (Ma Lin) and 56 (Christian
Suss) in the world ranking. Analysis of the matches: L. Ma vs T. Boll, and L.Q.
Wang vs C. Suss.
2. To record the 5 different types of steps defined and the 16 types of shots (drive
and back) was used a 16 x 5 table. To carry out this analysis it has always
been taken into account the last step before the shot or before the attempt to
hit the ball.
3. The analysis of the frequencies of the different types of steps were performed
and percentages calculated.
4. The non-parametric Chi Square test were performed to identify significant
differences (=0.01) in the use of footwork techniques by the 4 players
considered.
RESULTS
The results allow a qualitative description of the various step movements.
The most frequent step is the one step with a frequency of 37.3%; the second one is
the turn step with a frequency of 21.1%; they are followed by the chass� 15.2%; the
stroke without stop 11.5 %; the slide step 7.5% and the crossover 7.3%.
Chi Square analysis, by comparing the use of different types of steps by the players,
shows significant differences between them (� (15) = 40.63, p<0.01). A single match
analysis shows that between Boll and Lin there are not significant differences in the
steps used (� (5) = 14.01, p>0.01); while between Wang and Suss the differences in
steps movements are significant (� (5) = 26.62, p<0.01).
DISCUSSION
Analysis of the matches suggests inter individual differences in the characteristics of
the steps movements. The "one step" is especially used to hit the ball in the forehand
and backhand push to return the service. The "turn step" is used to prepare the
forehand top spin. The Timo Boll vs Ma Lin match shows a similar use of steps by
players whereas in the Wang Liqin vs Christian Suss match, the first player (the
winner of the match) uses the "turn step" more frequently than the other player.
Further studies on a larger number of matches, using the same methods, will permit a
better understanding in the use of footwork techniques.
Key words: table tennis, footwork technique
Proceedings book 401
Malagoli Lanzoni Ivan, Lobietti Roberto, Merni Franco
1. Introduction
Table tennis is an extremely complex sport and its development never stops.
Analyzing table tennis is immediately possible to notice that it includes the most
important characteristics of sports in general: techniques, game plan, physical and
psychological skills.
These are fundamental skills and it should be underlined the importance of studying,
developing and training them in order to reach high agonistic degrees.
This paper is based on already done studies [Leach J., 1971] [Trupkovic J., 1978],
and aims to get deeper in technique's development.
A good technique, considered as carrying out in the best way a specific movement,
is the main base for building up a good player. Moreover, its development is affected
by lot of factors: scientific knowledge, rules, tools, experience. This is the reason why
lot of studies aim to develop its teaching and learning.
The training aims to get closer to a pattern considering the player's personal skills,
for building up a specific personal technique, or a personal style.
This process starts from a basic level technique, it goes through a standard pattern
built up on the best player's analysis and finally it should fit on the player personal
style and become as close as possible to a pattern.
The table tennis technique is based on different types of strokes and movements or
steps.
Regarding the strokes' technique, different studies have been carried out: on the
ITTF "Level 1 coaching manual" [2003] Tepper G. clearly defined a standard
classification of the different types of strokes, describing the execution technique.
Moreover, Ripoll H. [1989-1990] considered the strokes' psycho-motor aspects and
Rodano R. [1991] the biomechanics ones.
The most important thing, considering the best players technique, is the best
execution of movements and steps, for reaching in the shortest time the right
position, and playing the best stroke.
This is the reason why movements and steps are considered the most important
technical aspects for table tennis [Deniso P., 1992] and it is fundamental to get
deeper in their analysis.
2. Aims of the study
This study has three main aims:
1. create a clear and overall standard definition of the different types of steps and
movements used in table tennis
2. construct the best standard technique pattern of steps and movements,
analysing some high level players' matches
3. suggest a good method for studying and analysing different players' techniques
in order to improve training and obtain better high agonistic results
3. Methods
1. Analysis of two "2006 World Team Table tennis Championships" semifinal matches
,Bremen, Germany (videos recorded from television)
2. The players analysed were the n� 1 (Wang Liqin), n� 2 (Timo Boll), n�4 (Ma Lin)
and n� 56 (Christian Suss) in the world ranking
3. The analysis is based on two matches: Ma Lin vs Timo Boll and Wang Liqin vs
Christian Suss
4. Data have been recorded in a 16x5 table in which different types of steps and
strokes have been taken into account
402 Proceedings book
Footwork techniques used in table tennis: a qualitative analysis
Footwork
One of the main characteristics of "modern" high level table tennis is high speed.
A good moving technique is the starting point for reaching in the shortest time the
right position and playing the best stroke.
The different steps' classification below is based on a right hand player but it could
be referred also to a left hand one in a perfectly symmetric way. This classification has
been mainly based on the moving technique independently from the step's direction.
Before going through the steps' description is necessary to give a definition of the
ready position.
3.1.1. Ready position
The ready position is an important base stance as all possible strokes must be easily
reached. The feet should be shoulder width apart or slightly wider, knees bent, body
leaning slightly forward and the weight on the front part of the foot to provide balance
and readiness for movement. Variations of the ready position exist according to the
style of play of the player [Tepper G., 2003].
The four players considered are all forehand attackers, Ma Lin is the only one playing
with the Chinese style pengrip.
So that their ready position can be described as follows: standing close to backhand
corner with the left leg forward for right-handers, so that the majority of balls can be
played with the forehand.
3.1.2. Steps' classification
1. One step
2. Short and medium steps
a. side to side or "chass�"
b. slide step
c. turn step
3. Crossover
1. One step is a small step played starting from the ready position or during other
game phases, keeping one foot still and moving the other one towards the ball. The
foot that plays the movement should immediately come back into the ready position.
One step footwork is used when the ball is played very quickly by the opponent and
there is insufficient time to get into the right position for playing the stroke. This type
of step is mainly played to return short services or balls played very close to the net.
R
L
R
Figure 1 One step
2. Short and medium steps: all those movements played from the ready position
or during other game phases and involving the movement of both feet. These steps
Proceedings book 403
Malagoli Lanzoni Ivan, Lobietti Roberto, Merni Franco
allow players to cover short or medium distances, towards the ball for playing the
strokes, with very high speed
a. Side to side or "chass�": if the movement is on the right side, the left foot
moves first and has to get close to the right one, which will move on the right
side. So that, at the end of the movement the player will get back on the ready
position.
1
L
LR 2
R
Figure 2 Chass�
b. Slide step: if the movement is on the right side the right foot moves first,
followed by the left one which will slide in the same direction. So that, at the end
of the movement the player will get back on the ready position.
2
L
LR 1
R
Figure 3 Slide step
c. Turn step: is the movement played by a player who wants to play a
forehand stroke from the backhand corner. This step could be done following the
chass� or slide step technique. It is especially useful for playing the forehand
topspin from the backhand corner.
R L
L R
Figure 4 Turn step Proceedings book
404
Footwork techniques used in table tennis: a qualitative analysis
3. Crossover: is used when the player has to cover a long distance in a short time.
Crossover footwork should not be used for short distances. The player is in the
backhand corner waiting to cover most of the table with the forehand. The player
initiates movement to the right by tacking a step with the right leg into a wide stance.
The left leg crosses over in front of the right leg as contact is made. As the follow-
through is completed the right leg is brought forward. At the end the right leg finishes
in a wide position ready to push back to the left [Tepper G., 2003].
1
L L
R R
2
Figure 5 Crossover
3.2. Strokes
Regarding the strokes, it follows a list without description:
1. Forehand Topspin
2. Backhand Topspin
3. Forehand Push
4. Backhand Push
5. Forehand Block
6. Backhand Block
7. Forehand Topspin counter Topspin
8. Backhand Topspin counter Topspin
9. Forehand flick
10. Backhand flick
11. Forehand smash
12. Backhand smash
13. Forehand drive
14. Backhand drive
15. Forehand lob
16. Backhand lob
3.3. Methodological aspects
Into the following table have been also considered, together with steps, the services,
distinguishing between the forehand ones and the backhand ones. Moreover have
been collected data referred to "steps without stroke" and "strokes without step".
Covering a long distance, more than one step could be involved into the movement,
it is important to underlie that for carrying out this analysis it has always been taken
into account the last step before the stroke, or before the attempt to hit the ball.
Data have been collected looking at matches with the slow motion and looking at
one player each time.
Proceedings book 405
Malagoli Lanzoni Ivan, Lobietti Roberto, Merni Franco
4. Results
One table for each player has been created and then data have been collected all
together in the following table.
Table 1 Data collected for the four players considered
Forehand 144 Short and medium
service step
Backhand
service 0 One Chass� Slide Turn Crossover Stroke N Forehand
step step step without row plus
Topspin
F 17 10 15 53 16 step 114 Backhand
Push 3 53 167
(back) B 20 8 10 - 0 145
15 112 72
Block F 89 7 0 15 1 0 33
1 4 94
Topspin B 32 0 0 - 0 1 68
counter 84 45
Topspin F 0 1 0 1 1 30 1
Flick 9 10 9
B 10 16 12 - 0 26 2
Smash 3 19
F 5 20 2 36 12 0 38
Drive 0 1 573
B 1 5 0 - 1 0 0
Lob 0 0
F 19 2 1 4 0 0 9
Step 4 1
without B 18 1 0 - 0 0 1
stroke 0
N column F 0 0 0 1 0 38
0
B 0 0 0 - 0 573
66
F 0 0 0 0 0
B 1 4 0 - 0
F 0 0 0 0 1
B 0 1 0 - 0
2 12 3 11 10
214 87 43 121 42
In the following figure different steps' frequencies have been calculated in
percentages:
Stroke without step One step
11,5% 37,3%
Crossover
7,3%
Turn step
21,1%
Slide step Chass�
7,5% 15,2%
Figure 6 Different steps' percentage frequencies
The results allow a qualitative description of the various step movements.
406 Proceedings book
Footwork techniques used in table tennis: a qualitative analysis
The most frequent step is the one step with a frequency of 37.3%; the second one is
the turn step with a frequency of 21.1%; they are followed by the chass� 15.2%; the
stroke without step 11.5 %; the slide step 7.5% and the crossover 7.3%.
The following graph considers the analysis of the different steps used by the four
players considered:
50,0%
45,0%
40,0%
35,0%
30,0% Ma Lin
25,0% Boll
20,0% Wang Liqin
Suss
15,0%
10,0%
5,0%
0,0%
One step Chass� Slide step Turn step Crossover Stroke without
Figure 7 Rates between total number of steps and differestenpt types of steps for each
player
5. Conclusions
In order to define all the technical features of table tennis it is necessary to develop
a comprehensive and standard language at international level.
This enables setting and developing a method for studying and analysing the
different movements. They are very important but they are not recognised as much as
strokes.
To this purpose a best pattern should be taken as a reference, which is composed by
the best players on the world ranking. The different players' games have been
watched in slow motion in order to permit an accurate data collection.
The major problems emerged regard in particular the difficulty in recognising and
discerning: "steps without stroke", "stroke without step", and "the last step before the
attempt to hit the ball" especially if it is considered a situation in which lot of different
quick steps' combinations are involved.
The statistical results, of the analysis carried out on the four world players, allow a
quantitative description of the various step movements.
The most frequent step is the "one step" with a frequency of 37,3%; the second one
is the "turn step" with a frequency of 21,1%; they are followed by the "chasse"
15,2%; the "stroke without step" 11,5 %; the "slide step" 7,5% and the "crossover"
7,3%.
Through these results it has been possible, for example, to deny the "chass�" as the
most used step.
Moreover the analysis of the matches suggests inter individual differences in the
characteristics of the steps movements. For example the "one step" is especially used
to stroke the ball in the forehand and backhand push to return the service. The "turn
step" is used to prepare the forehand top spin or to make a counter topspin.
While block often doesn't need any step.
Proceedings book 407
Malagoli Lanzoni Ivan, Lobietti Roberto, Merni Franco
Lot of similar conclusions can be drawn from this analysis and they permit to
underline differences in the use of steps and to find out which are the most useful
steps in order to improve the training and the basic technique.
Finally the non-parametric Chi Square test were performed to identify significant
differences (=0.01) in the use of footwork techniques by the 4 players considered.
Chi Square analysis, by comparing the use of different types of steps by the players,
shows significant differences between them (� (15) = 40.63, p<0.01). A single match
analysis shows that between Boll and Lin there are not significant differences in the
steps used (� (5) = 14.01, p>0.01); while between Wang and Suss the differences in
steps movements are significant (� (5) = 26.62, p<0.01).The Timo Boll vs Ma Lin
match shows a similar use of steps by players whereas in the Wang Liqin vs Christian
Suss match, the first player (the winner of the match) uses the "turn step" more
frequently than the other player.
Comparing different players' technique can also allow a deep analysis of the game
plan and further studies on a larger number of matches, using the same methods, will
permit a better understanding in the use of footwork techniques.
6. REFERENCES
Deniso P., Fruscione P., Quintiliani M., "Tennistavolo. Preparazione fisica, tecnica e
didattica", Societ� stampa sportiva. Roma, 1992.
Leach J., ("Better table tennis"), Manuale pratico di Tennistavolo, Il Castello, Milano,
1971.
Lobietti R, Merni F., "Blocking footwork techniques used by male and female volleyball
players are different", Journal of Human Movement Studies, 2006, 51 (5), p.307-
320.
Rodano R., Del Rossi D., Manoni A., De Leva P., Mallozzi L., Carvelli E., "Cinematica
nel tennistavolo: applicazione di un sistema di elaborazione automatica
dell'immagine televisiva ELITE allo studio della cinematica del tennistavolo",
Scuola dello sport, 1991, n� 21, p. 50-56.
Ripoll H., "Comprendere ed agire: la soluzione del conflitto semantico-sensomotorio
nello sport", Scuola dello sport. Parte prima: 1989, n� 17, p. 23-28. Parte
seconda: 1990, n� 18, p. 38-43.
Tepper G., "ITTF Level 1 Coaching manual" 2003. www.ittf.com
Trupkovic J., "Wege zum leinstungtischtennis", Druckhaus Gebh, 1978.
408 Proceedings book