biomechanical analysis of a badminton jump smash
TRANSCRIPT
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SPEAR 202 Biomechanics in Physical
Education and SportsPresented by:
NORALIE B. MORALES
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Badminton is a game played by either two players (singles) or four players (two pairs in
doubles), who take positions on opposite halves of a rectangular court with a net in the
middle line.Badminton has been internationally recognized as an athletic sport requiring fast
reactions and skilled movements.Badminton offers a wide variety of basic
strokes, and players require a high level of skill to perform all of them effectively.
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With the exception of serving, there are six basic strokes in badminton: defensive clear, attacking clear, drive/flick, smash, drop and
net play.Among these strokes, the smash is the most
typical and powerful offensive badminton technique to defeat the opponent.
The smash has been described as a shot toward the opponent’s court with a downward
power and speed wherein the angle of the shuttlecock’s trajectory is very steep.
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In the forehand overhead smash, it can either be performed through a smash (standing
smash) and a jump smash.
The jump smash has more vertical jump with a short aerial suspension compared to the
standing smash.In a jump smash, a jump is performed during
the second and third phase of the sequence to generate more power and a steeper angle for the shot therefore giving the opponent less
time to react.
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Preparation Phase Body should
be sideways with non-
racket shoulder
towards the net in line with the
oncoming shuttle.
Legs should be spread
apart to widen the base of
support with bent knees to
lower the athlete’s center of gravity.
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Preparation Phase
Having a supported center of
gravity allows all the
particles of the body to be
evenly distributed to
maximize control of technique.
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Preparation Phase If an athlete
attempts the smash with a poor center of gravity then
most likely will become off
balance which can reduce the
power and accuracy of the
shot and disrupt the
overall sequence of
the skill.
Line of Gravity
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Preparation Phase
Muscles involved:
QuadricepsHamstrings
Calves
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Back Swing Phase
1 2
3 4
As weight is transferred to
the back (weight on
rear foot), the body is
pushed with the racket
foot into the air moving the
center of gravity into
position.
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Back Swing Phase
1 2
3 4
The legs are brought at the
back to generate
more force while
suspended in the air at the highest point
possible.
Racket arm is stretched as far back as possible to
provide optimal
momentum for forward
swing.
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Back Swing Phase
1 2
3 4
Newton’s 3rd Law:
“for every action there is an equal and
opposite reaction”. For the
forehand smash,
applying a downward
force before jumping can
accelerate the body forward and upwards overcoming
inertia.
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Back Swing Phase
1 2
3 4
Reaching optimal height when jumping
provides a greater
trajectory angle when
making contact at the highest point
with the racket.
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Back Swing Phase
1 2
3 4
The more flexible the racket arm
can pull back creates the
optimal distance for generating
greater force.
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Forward Swing Phase
The further the racket arm is behind the athlete the more momentum can be generated increasing the power when making contact with the shuttle. Once the forward swing is
in motion, legs should begin to straighten out to return to the optimal line
of gravity, while also transferring the power
from the legs to the forward swing’s
momentum, increasing power.
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Forward Swing Phase
Force summation – using the largest
muscles first, followed by the smallest muscles while sequentially
accelerating each body part to maximize
momentum.
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Forward Swing Phase
Muscles involved:
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Forward Swing Phase
Muscles involved:
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Impact Phase
Straightening the elbow when
connecting with the shuttle. Flexion of the wrist
in a downward motion at the point of impact increases the power and angle
towards the opponent’s court.
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Impact Phase
For optimal performance, the
shuttle should make point of contact with
the racket at the highest possible
point to provide the best possible shot
that consists of power and downward
trajectory.
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Impact Phase
The angle of release of the shuttle
determines how long it will stay airborne and considers how far (horizontally) it
will move with gravity as a constant
effect.
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Impact Phase
The angle of release is important as a downward angle
creates less time for the opponent to
react and difficulty to return, which is why the height of release can be considered to
maximize the success of the shot.
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Follow Through Phase
Racket should follow through after making contact with the shuttle to put maximum
force in the shot.
1 2 3
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Follow Through Phase
Follow through should lead the racket towards the non-racket leg by crossing
the body.
1 2 3
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Follow Through Phase
For optimal performance, it is critical that once the racket has made contact with the shuttle it is then swung down and crosses the body to ensure no momentum is lost
during the hit.
1 2 3
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IMPLICATIONS
The badminton forehand overhead jump smash applies a great amount of pressure
towards the opponent in attempting to return the shuttle. If its optimal
performance is executed considering the biomechanical principles, with proper training which involves muscular and
cardiovascular exercises, then the shot is almost impossible to return.
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