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Motion Analysis-hockey slap shot

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by

Campbell Messner

on 15 April 2014

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Transcript of Motion Analysis-hockey slap shot

Start
6 phases of a slap shot
Backswing
-The backswing is the first part of a slap shot. This is the "winding" up motion where the player brings his or her stick back with the shoulder and elbow extending. This is also where we see the torso rotating back to eventually achieve the swinging motion.
The hips are slightly flexed primarily by the
psoas
,
iliacus
, and
pectineus
.
The arm is fully extended by the
triceps brachii
and
anconeous
.
Arm is pronated primarily by
pronator teres
and
pronator quadratus
.
The wrist is slightly flexed primarily by
flexor carpi ulnaris
,
flexor carpi radialis
, and
Palmaris longus.
The minor muscles involved with hand flexion are
flexor digitorum profundus, flexor digitorum superficialis
and
, flexor digiti minimi.
The
trapezius, posterior deltoid, rhomboids, pectoralis major,
and
latissimus dorsi
perform the extension and retraction of the shoulder and the shoulder girdle for the backswing.
Lastly, the
external and internal obliques
primarily perform the trunk rotation of the backswing.
Downswing
-Downswing is the motion of the player bringing his or her stick down towards the ice to "slap" the puck. This is essentially where the player is transforming potential energy into kinetic energy to make the puck move.
The power of this motion comes from the primary trunk rotators,
external and internal obliques
, as well as the assisting abdominal synergists,
transverse and rectus abdominis.
In this phase the shoulder is adducted by the
latissimus dorsi, pectoralis major,
and
teres major.
The rest of the arm stays extended as the
anterior
and
lateral deltoid, pectoralis major, coracobrachialis, and the biceps brachii short head
flex the shoulder foward.
Preloading
-This is the portion of the phase where the stick starts to bend. As the player's stick comes through the downswing phase he or she "slams" their stick slightly onto the ice to produce a flex in the stick to produce a greater movement of the puck.
-The same muscles are used in this phase as in the swing phase, they are just more anterior as the shoulder is flexed more and the torso brings the body closer to anatomical position.
Loading
Motion Analysis-hockey slap shot
Campbell Messner
HPEZ 373
4/15/14

A. backswing
B. downswing
C.preloading
D. loading
E. release
F. follow-through
Release & follow-through

-The release and follow-through phases are where the player "releases" the stick from the ice and begins pointing the stick towards the direction he or she wants it to go. This phase is the most important because it dictates accuracy.
These stages are primarily achieved by further flexion, adduction, protraction and even horizontal adduction of the shoulder joint as well as major trunk rotation.
This action is primarily achieved by the
anterior deltoid, latissimus dorsi, pectoralis major and minor, coracobrachialis
and
, serratus anterior
Strength and Injuries
-The primary power and action of the slap shot comes from the torso and its rotational movement. It is important to keep the keep the torso rotators as well as the spine muscles strong to maximize power and reduce injury.
-Injuries with the slap shot usually come without a proper warm-up or even improper technique. A strain in the upper-back from a follow through is a potential result.
POWER
SPEED
STRENGTH
Hockey Slap Shot
The slap shot is dynamic movement that allows the player to put an amazing amount of power, strength, and speed onto the puck. This movement allows for a quick and accurate release to score goals.
-This is the phase where the most stress is placed on the stick to shoot the puck at high velocity. This is where full contact of stick and ice occur.
-Again, the body is primarily using the same muscles as before but just futher in the motion. The trunk rotators are now beginning to bring the torso more anteriorly faced, as the player begins to fully rotate the direction he or she is shooting.
-Something important to note: Sometimes in a slap shot a player will extend their hip during this phase to begin to set up for the follow-through phase. This is achieved by:
Gluteus maximus, semimembranosus, semitendinosus, biceps femoris (long-head),
and
adductor magnus (ischial fibers)
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