Download KIN 481 Movement Analysis

KIN 481
Movement Analysis
What do you need to know in order
to analyze an action?
• Joint movements involved
• Joints involved
• Agonists
You must be able to observe the movement
or be aware of its execution
Joint movements
• Establish starting position for the
movement.
• Determine the joint action at each joint
involved
Agonists:
Creating vs. Controlling for
Movements
• Creating the concentric phase of a
movement
• Controlling for the eccentric phase
Creating vs. controlling
• Agonist: muscle that provides force during
a movement.
• The same muscle will provide force during
the concentric and eccentric phase.
• Create = concentric = against resistance
(moving action)
• Control = eccentric = with resistance
(braking action)
So…the same muscles that are
active during the control
(eccentric) phase are also
active during the create
(concentric) phase. Why is this
often confusing?
Look at the arm curl. It begins
with the barbell in the down
position.
The move up to the chest
involves flexion of the elbow.
The active (concentric) muscles
are the elbow flexors
(eg:brachialis, biceps).
The next movement in the arm
curl is down to the starting
position. This is elbow
extension…but the active
muscles are the elbow flexors!
During the eccentric (control)
phase, when the muscles are
used as brakes to slow down
movement, the active muscles
will still be the agonists.
Exercises to Analyze
• Each exercise listed includes the joint and
movements.
• You should be able to list the muscles
active at each joint during this exercise
(minimum 3 if there are that many).
• This list is the concentric phase…during
the eccentric phase the movement would
be opposite, but the agonist muscles
would remain the same.
Upper Body Exercises
• Arm curl
– Elbow flexion, wrist and hand flexion
• Triceps extension
– Elbow extension, wrist and hand flexion.
• Military press
– Shoulder flexion (or abduction), elbow extension,
wrist and hand flexion.
• Bench press
– Shoulder horizontal adduction, elbow extension, wrist
and hand flexion
Upper Body Exercises (cont.)
• Pull up
– Shoulder extension (or adduction), elbow flexion,
wrist and hand flexion
• Lat pull down
– Shoulder adduction, elbow flexion,wrist and hand
flexion.
• Push up
– Shoulder horiz adduction (or flexion), elbow
extension, wrist and hand flexion.
• Bent row
– Shoulder horizontal abduction, elbow flexion, wrist
and hand flexion
Lower Extremity and Trunk
Exercises to Analyze
• Sit up
– Trunk flexion, hip flexion
• Squat (eccentric movement is first)
– Hip extension, knee extension
• Dead lift
– Trunk extension, hip extension, knee
extension
• Leg press
– Hip extension, knee extension
• Leg curls
– Knee flexion
• Leg extensions
– Knee extension
So…given all that information,
how do I create the analysis?
Arm curl
• Concentric
movement: from
down position curling
bar up to chest.
– Concentric elbow
flexion: biceps brachii,
brachialis,
brachioradialis,
pronator teres, plus
assisting forearm
flexors.
• Eccentric movement:
return to down
position (arms
extended)
– Eccentric elbow
extension: biceps
brachii, brachialis,
brachioradialis,
pronator teres, plus
assisting forearm
flexors.
Let’s do another just to make
sure you have the hang of it…
Push Up
• Concentric movement up
from floor:
– shoulder horiz adductors:
Clav. PM, Sternal PM,
anterior deltoid,
coracobrachialis, biceps
brachii.
– elbow extensors: triceps
brachii, anconeus, plus
assisting forearm
extensors.
• Eccentric movement
down to floor:
– shoulder horiz adductors:
Clav. PM, Sternal PM,
anterior deltoid,
coracobrachialis, biceps
brachii.
– elbow extensors: triceps
brachii, anconeus, plus
assisting forearm
extensors.
It’s as simple as that! You have
all the movements and exercises
here in these notes. All you have
to do is fill in the muscles for
each.