CYBEX VR2 Owner’s Manual
The Machine
• Range of Motion Adjustment - The chest press elimi
nates the danger of excessive stretch by providing an
adjustable starting position that, when pre-set to the indi-
vidual user’s structure/mechanics, also serves as a range
of motion limit.
.
• Plane of Motion - The handles are angled to allow opti-
mum average wrist position throughout the movement.
They are in a “barbell” or horizontal position to encour-
age motion in the horizontal plane as well as the optimal
position of neutral shoulder rotation. Vertical or neutral
handles are less effective for chest work as they encour-
age motion in the sagittal plane (shoulder flexion).
• Variable Resistance - A cam provides appropriately
varying resistance that is maximal at the end of the
motion where the body’s mechanical advantage
increases.
• 10 to 305 Pounds by Fives - The top plate provides a minimum weight of ten pounds.
Subsequent plates in the weight stack are twenty pounds each. Three “slide-on” five pound
incremental plates are securely positioned for easy access and effortless addition thereby
providing 10 to 305 pounds in five pound increments.
The Chest
• Horizontal Adduction - The pectoralis major
is primarily responsible for horizontal adduc-
tion of the shoulder joint. The pec is also
involved in flexion and extension of the
shoulder joint, although the anterior deltoid
and latissimus dorsi muscles, respectively, are
mechanically more effective at performing
those motions. The pec is involved in inter-
nal rotation of the shoulder, however, this is
a mechanically weak motion and becomes
the limiting factor in strength when combined
with other shoulder motions.
• Scapular Retraction - The position of full
scapular retraction, when maintained, creates
the greatest possible force angles of the pec
throughout the range of motion.
MUSCLES TRAINED
Exercise
Page 3-27
Chest Press - Single Axis
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