Row/Rear Delt - Single Axis - 4521 - CYBEX VR2 Owner's And Service Manual

Row / Rear Delt - Single Axis
The Machine
• Planes of Motion - The long parallel or vertical handles
are specifically designed to allow motion in the sagittal
plane (extension). The horizontal handles allow full motion
in the horizontal plane for optimum posterior deltoid (rear
delt) work. The length/position of the handles allows use
of either set from the same seat position.
• Variable Resistance - The machine provides maximum
resistance at the beginning of motion and appropriately
decreases the resistance to allow full contraction at the
end.
• 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 Latissimus Dorsi
• Extension - The latissimus dorsi is responsible
for extension as well as adduction of the shoul-
der joint. This machine is designed to resist
shoulder extension from the front. The lat is
also involved in internal rotation of the shoul-
der, however, this is a mechanically weak
motion and becomes the limiting factor in
strength when combined with other motions.
The teres major works alongside the upper
fibers of the lat in extension.
• Range of Motion - Row/extension begins with
the arm positioned forward (shoulder joint in
approximately 90 degrees of flexion) and ends
with the arm at the side in 0 degrees. Full con-
centric shortening of the lat can only occur
when the associated scapular motion is per-
formed with the shoulder motion. With motion
and resistance from the front, scapular
retraction is required. For the arm to return to the starting position, scapular motion is not
required. However, if protraction is allowed during the eccentric phase, then the scapula
must be reset in retraction at the beginning of the next repetition.
CYBEX VR2 Owner's Manual
MUSCLES TRAINED
Exercise
Page 3-45