| Think back to last year when you
were scurrying from the car to the hotel or from the taxi to the
airport frantically trying to keep on schedule so that you could
start your hard earned vacation. Many of us will recall the excruciating
pain we experienced in our neck area while we struggled to carry
our bags across terminal and hotel floors. This pain we experienced
stems from strain and or a lack of muscular strength and muscular
endurance in the trapezius muscle. Therefore, in order to help prevent
this potential vacation scenario from repeating, we will delve into
the correct training for the trapezius muscle. As in previous months,
we will continue our series on utilizing proper biomechanics as
a means to optimizing your own developmental potential. This month
we will focus on the trapezius muscle.
Kinesiology
While many of us associate the trapezius muscle with merely being
the neck muscles that can be seen from the base of the skull, the
trapezius muscle actually consists of three fiber areas. While it
is true that the upper fibers of the trapezius muscle originate
at the base of the skull, there are also middle and lower fibers
as well. The entire muscle looks like a kite, which starts at the
base of the skull and extends down and out to the posterior aspect
of the lateral third of the scapulae and medial border of the acromion
process and then continues down, inserting in a triangular space
at the base of the scapular spine. The upper fibers are a thin and
relatively weak part of the muscle. This is the area in which we
feel the most pain while carrying luggage. The upper fibers provide
some elevation of the clavicle and are of minor importance in moving
the head. The middle fibers are stronger and thicker and provide
strong elevation, upward rotation, and retraction of the scapula.
The lower fibers assist in retraction and rotate the scapula upward.
Synergistically working together, the three parts tend to pull upward
and adduct at the same time. The muscle is always used in preventing
the glenoid fossae from being pulled down during the lifting of
objects with the arms and as mentioned, is typical in action during
the holding of an object (like luggage). Strengthening of the upper
and lower fibers can be accomplished through a variation of shoulder-shrugging
exercises. The lower and middle fibers can be strengthened through
bent rowing in a prone position and side arm shoulder joint abduction
exercises.
|
Muscle
|
Origin
|
Insertion
|
Action
|
Innervation
|
|
Trapezius
|
Upper: base of skull, occipital protuberance
and posterior ligaments of neck |
Upper: posterior aspect of the lateral clavicle
|
Upper: scapula elevation and extension of
the head at neck |
Upper: accessory nerve (cranial nerve XI
and branches of C3, C4) |
| |
Middle: spinous process of 7C and T1-T3 |
Middle: medial border of the acromion process and upper
border of acromion
|
Middle: elevation, upward rotation and adduction
of scapula |
Middle: accessory nerve (cranial nerve XI
and branches of C3, C4) |
| |
Lower: spinous process of T4-T12
|
Lower: base of scapular spine (triangular
shape) |
Lower: depression adduction, upward rotation
of the scapula |
Lower: accessory nerve (cranial nerve XI
and branches of C3, C4) |
|
Selected Exercises
Barbell Shrug
Proper Position:
1. Grasp the bar using a pronated grip approximately shoulder width.
2. Make sure that you have a solid stance while standing upright.
3. With the neck in a neutral position and the head facing forward,
this is the starting position.
Proper Form:
1. From the starting position, retract the scapula by squeezing
your shoulder blades together.
2. Simultaneously elevate and rotate the scapula upward attempting
to bring your shoulder as close to your ears as possible.
3. Hold the contraction for a second and then slowly return to the
starting position.
Essential Tips:
1. Concentrate on keeping the hands and arms relaxed while contracting
the trapezius muscle.
2. Maintain a natural arch in the spine at all times.
3. Keep the head and neck in a neutral position throughout the exercise.
4. Keep in mind that this is not a shoulder joint, rather, a shoulder
girdle movement.
5. Do not bend and bounce at the knees to assist with the movement.
Dumbbell Shrug
Proper Position:
1. Grasp each dumbbell using a pronated grip approximately shoulder
width.
2. Make sure that you have a solid stance while standing upright.
3. With the neck in a neutral position and the head facing forward
and the dumbbells resting against the side of the body, this is
the starting position
Proper Form:
1. From the starting position, retract the scapula by squeezing
your shoulder blades together.
2. Simultaneously elevate and rotate the scapula upward attempting
to bring your shoulder as close to your ears as possible.
3. Hold the contraction for a second and then slowly return to the
starting position.
Essential Tips:
1. Concentrate on keeping the hands and arms relaxed while contracting
the trapezius muscle.
2. Maintain a natural arch in the spine at all times.
3. Keep the head and neck in a neutral position throughout the exercise.
4. Keep in mind that this is not a shoulder joint; rather, a shoulder
girdle movement.
5. Do not bend and bounce at the knees to assist the movement.
Seated Cable Row
Proper Position:
1. Plant your feet firmly against the foot platform.
2. Grasp the pulley handles, and with your legs push yourself while
simultaneously pulling with your back until you are in an upright-seated
position.
3. Sit up in a ready position with your hips and knees slightly
bent and a natural arch in your lower back.
4. Keep the elbows slightly bent and pointed down. This is the starting
position.
Proper Form:
1. From the starting position, retract the scapula by pulling the
shoulder blades down and squeezing them together.
2. Contract the trapezius muscle by pulling the shoulder blades
back in retraction.
3. Unlike a seated row for the latissimus dorsi, the arms do NOT
move, you simply retract the scapula.
4. Hold the contraction for one second and return to the starting
position.
Essential Tips:
1. Avoid rotating the shoulders during execution.
2. Keep the arms in a semi-locked position throughout the exercise.
3. Maintain a natural arch in the lower back.
4. Keep the head and neck in a neutral position.
Prone Rows Against a Bench
Proper Positioning:
1. Lie face down on a bench that is elevated to a level in which
you cannot touch the floor with your hands hanging down.
2. Grasp a set of dumbbells and allow your arms to hang down.
3. Maintain slight tension by not allowing the dumbbells to touch
the ground.
Proper Form:
1. From the starting position, retract the scapula by squeezing
your shoulder blades together.
2. Do not bend or flex at the elbows.
3. Hold the contraction for one second and return slowly to the
starting position.
Essential Tips:
1. Avoid jerking the torso for assistance.
2. Keep your body against the bench in a prone position at all times.
3. Do not bend at the elbows, which would activate the biceps to
engage in elbow flexion.
In addition to proper biomechanics, it is essential to incorporate
proper stretching techniques into your training program. If you
want to stretch the upper fibers on the right side, then grasp a
dumbbell in the right hand to place the scapulae in depression while
simultaneously undergoing slight lateral flexion of the neck to
the left side. The reverse is true for the left side. In order to
stretch the middle fibers, simply undergo the above stretch but
have a partner passively pull your scapula into protraction. The
lower fibers are best stretched while your client is lying on their
side and you passively move the scapulae into maximal elevation
and protraction.
By having a stronger comprehension of the proper biomechanics of
the trapezius muscle, as well as correct methods in which to stretch
this muscle, you can successfully design a program for you and your
clients. In addition, you may help to prevent that dreaded strain
from carrying luggage over your vacation this summer. Preparation,
persistence and hard work will help you reach your potential. Until
next month, train hard and continue to live the fitness lifestyle.
Please direct all questions or comments to
patrick@issaonline.com. |