Oshi-zuki, or push punch (think the sequence in Chinto),
is often taught as two oizuki (lunge punches) in a
row. While this the right way to learn it, oshi-zuki
is really much harder than this to do properly, and
has applications that aren’t readily apparent
in the basic execution. In fact, it’s not really
a punch at all, but a building block to something better.
A basic oshi-zuki is performed as two consecutive
First let us examine the punch step by step. In an
article I wrote for Ryushu last year ("Anatomy
of an Oizuki"), I spoke about the need for speed
when executing a lunge punch. Well, this is true for
the first part of the oshi-zuki, too. When the punch
is launched, you have to explode into the step, using
your hip and shime/shibori at the end. However, unlike
oizuki, this is not the end of the technique. Having
impaled your intended target on the end of your fist,
is what you are doing next taking another quick step
and to push your opponent away, setting him up for
a second, finishing punch? This seems kind of awkward.
While you find oshi-zuki in advanced Ryusei kata, at
seems to be weak and ineffective.
do an advanced oshi-zuki, you should explode
into the motion, and the first punch should
flow into the next.
However, I believe that oshi-zuki is a setup for
an entering, throwing or controlling technique. So
that way, you use the first punch to “soften” your
opponent, then you use the next step to control the
counterattack, or to move into a throwing position,
since you are inside your opponent’s space. So
the second punch is not necessarily a punch.
You cannot achieve this more advanced use of oshi-zuki
by merely performing two stepping punches. The second “punch” must
have energy flowing from the first, allowing you to
punch, block, grab, throw or any combination of these.
application. the first punch of an oshi-zuki can
be used to set up a throw, joint lock, block
or other controlling technique. So the second "punch" is
not really a punch.
The footwork also becomes important in how you cover
the distance between you and your opponent. It can
be a full step, half step, reverse step, and
so on, depending on the situation. You need to practise
oshi-zuki many times, linking one technique to the
next, to be able to perform it correctly and know
—Peter Zehr, 4th Dan, Technical Director
of the Grey-Bruce Ryusei Karate Clubs