🎾 Nick Kyrgio Debunk Topspin Serve¶
Giới Thiệu¶
Nick Kyrgio Debunk Topspin Serve — tài liệu 8 trang từ thư viện sách tennis.
Chủ đề chính: Topspin, Giao bóng, Strength
Tóm tắt nội dung (trích từ tài liệu gốc): Nick Kyrgios Helps Debunk Top Five Serve Myths | FM Tennis about:reader?url=https://fm-tennis.com/2020/01/10/nick-kyrgios-helps-d... fm-tennis.com Nick Kyrgios Helps Debunk Top Five Serve Myths | FM Tennis 8-10 minutes Nick's size and strength add to his serve's potency, but his technique is the differentiating factor. Specific characteristics of his technique contradict many common beliefs about the serve. Using images and video of King Kyrgios himself, we'll debunk the top five serving myths and help improve your serve in the process: SCRATCH YOUR BACK 1 of 8 3/28/2021, 12:35 PM Nick Kyrgios
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Nick Kyrgios Helps Debunk Top Five Serve Myths | FM Tennis about:reader?url=https://fm-tennis.com/2020/01/10/nick-kyrgios-helps-d...
fm-tennis.com
Nick Kyrgios Helps Debunk Top Five
Serve Myths | FM Tennis
8-10 minutes
Nick's size and strength add to his serve's potency, but his
technique is the differentiating factor. Specific characteristics
of his technique contradict many common beliefs about the serve.
Using images and video of King Kyrgios himself, we'll debunk the
top five serving myths and help improve your serve in the process:
SCRATCH YOUR BACK
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Nick Kyrgios Helps Debunk Top Five Serve Myths | FM Tennis about:reader?url=https://fm-tennis.com/2020/01/10/nick-kyrgios-helps-d...
As illustrated in the above photo, Kyrgios' racquet is nowhere near
his back. Scratching the back is one of the the most harmful myths
for two reasons: it reduces racquet head speed and puts you at
greater risk for injury. When you try to scratch your back with the
racquet, it places the elbow in a more elevated position, which
tightens the shoulder muscles. The elbow should only go higher
than the shoulder once--upon making contact.
The anatomical action associated with the "back scratch position"
is external rotation of the shoulder. When serving, the muscles
responsible for external rotation should go into an eccentric--or
lengthening--phase. A tense muscle reduces our range of motion,
therefore reduces our racquet head speed. Greater range of
motion = greater racquet head speed.
To increase external rotation on your serve, it is best to think about
combing your hair back with the strings--or scratching someone
else's back behind you--rather than scratching your own back.
Consistently tight muscles are more susceptible to overuse
injuries, therefore this concept will not only improve your serve's
power, but also reduce the likelihood of getting injured.
SNAP YOUR WRIST
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The wrist is a radial joint that can perform several anatomical
movements, but pronation is not one of them.
Pronation occurs when the radius turns over the ulna.
In the above photo, you can see Kyrgios's wrist is neither
extended, flexed, abdubcted, or adducted. The outward twist of the
hand is a combination of forearm pronation and internal rotation of
the shoulder. Trying to feel or visualize the wrist
snapping targets the wrong joint entirely. This verbiage is also
detrimental because wrist flexion brings the racquet down,
when we ideally want to swing up and out.
Pronation occurs during overhead actions in other sports as well.
For instance, major league baseball pitchers (even when throwing
a curve ball), quarterbacks in football, and freestyle swimmers. So,
you should consider saving the "slam dunk the basketball" wrist
action for two-on-two in the driveway.
A better alternative to the phrase, "snap your wrist," is "twist your
palm out." In addition to this phrase being more factual, your brain
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relates best to the palm, so this will help you begin to feel the
correct action. Understanding the role--or lack thereof--of the
wrist should help you start serving more like the pros.
TOSS HIGHER
If I had a nickel for every time a new student exclaimed, "I've got
to toss higher," after a low-ish contact point, I might be able
to afford a few pairs of the new Airs (really, Nike...$150?!?!).
In reality, the toss is usually not the culprit. A low--or collapsed
--contact point often stems from having an open racquet face at
some point during the swing. A simple axiom to remember is,
"when the strings point up, the racquet must pull down," and vice
versa. Trying to toss higher distracts from the root cause and
actually exacerbates the problem. When the toss is significantly
higher than your peak reach, the body and racquet match the
falling ball--and the higher you toss, the faster the ball falls with
gravity.
Watch Kyrgios' serve from the side view. You can see the toss
barely falls a couple of inches before he makes the hit:
Nick's low toss helps him--not hurts him--with extension and
posture at the hit, while also never giving him the chance to pause
or decelerate the racquet. Here's an easy way to make sure
your toss isn't too high: hold your racquet up for contact, then toss
the ball to its usual height. If the ball is significantly higher than
your reach, you are most likely hurting your chance for an efficient
and consistent contact point.
POSE LIKE A TROPHY
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If you have always accepted the tennis trophy as the gold standard
of serve technique, you have been deceived--albeit not as bad as
the Trojan's were deceived by a large wooden horse, but deceived
nonetheless. Of course, there are elements of this pose that are
correct, but three major flaws have created mass confusion over
the years:
The angle of the racquet face doesn't allow for sufficient forearm
supination, which greatly decreases torque upon pronating. Also,
because the racquet face is open, it's harder to create spin. When
players emulate this position, they regress to a "palm-up"
serve. Essentially, as the shoulder moves forward, the racquet will
swing back with the strings--and palm of the hand--pointing to the
sky. The old axiom, "when the strings point up, the racquet must
pull down," applies here yet again.
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Nick Kyrgios Helps Debunk Top Five Serve Myths | FM Tennis about:reader?url=https://fm-tennis.com/2020/01/10/nick-kyrgios-helps-d...
The angle of his knees, hips, and shoulders, demonstrate a lack of
body rotation. With body rotation being the primary source of
power on the serve, this is a significant issue.
Lastly, the ball has yet to be tossed while the racquet is above his
head. This means he will have to wait in this position for the ball to
be released. Rather than stopping your momentum, it is best to
keep the racquet accelerating during this phase.
The irony is, that with serve technique like this, trophy man
probably isn't winning too many trophies himself...of himself.
Now let's compare Kyrgios during the same phase:
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Notice how the racquet face is closed--or angled more downward.
This will allow Nick's racquet to stay closed as
he accelerates forward. His back is turned towards the net, which
shows good body rotation. And while the racquet is above his
head, the ball has already left his hand, which will allow him to
keep accelerating throughout this phase.
These key differences make the Nick Kyrgios serve a
powerful cannon, while the poor trophy dude is left armed with a
bee-bee gun.
To help improve our most prominent visual aid for the serve--the
tennis trophy--we have started a petition on change.org. If you
feel so inclined, you can sign it here: Trophy Petition
JUMP FOR MORE POWER
If, when working on your serve, your tennis coach oddly reminds
you of David Lee Roth, then you might want to pack up your
racquets and go Runnin' with the Devil.
Having a Doctorate in Physics is not a prerequisite to become
a tennis coach (thank God it isn't), but it certainly helps to have a
basic understanding of some Newtonian principles. For example,
normal force--the foundational concept that allows us to generate
power using the kinetic chain--states that when we push down on
the ground, the ground pushes back on us. The jump doesn't
necessarily correlate with your ability to produce force, as
evidenced in the video below:
As you can see, Kyrgios is absolutely annihilating the serve while
staying grounded. How does he crush the ball without a jump, you
ask? Two words--body coil. As he uncoils from the ground up, he
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accelerates each link and subsequently decelerates the previous
link, all the way up the chain.
When top players like Kyrgios get airborne, it's a reaction--not an
action. Leaving the court, is a byproduct of a properly
sequenced kinetic chain. In other words, great servers are not
trying to achieve a max vertical leap when they serve.
If you can't break a pane of glass with your serve when grounded,
trying to jump higher or farther will most likely not help one iota. In
fact, jumping can cause you to lose power--if your feet leave the
ground before your racquet reaches peak velocity.
Thanks for stopping in to read our blog! Big thanks to Nick for
helping us debunk these serving myths. Good luck at the
Australian Open, mate! If you have any questions or comments,
leave a comment below, or find us on Instagram, Facebook, and
Twitter @fmtennisfl.
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