The Calves; Rotary Calf - 4620 - CYBEX VR2 Owner's And Service Manual

Rotary Calf
The Machine
• Axis Alignment - The Rotary Calf machine is designed
to match the motion of the ankle joint by aligning the
joint axis with a pivot point of the machine.
• Footplate - The rotating footplate maintains full and
constant contact with the toes and ball of the foot. This
increases comfort through greater surface area for
weight distribution and increases safety by eliminating
the opportunity for the feet to slide off.
• Variable Resistance - The machine provides maximum
resistance at the beginning of the motion and appropri-
ately decreases the resistance to allow full contraction at
the end. No other calf machine varies the resistance
throughout the range of motion, allowing each repetition
to be completed with a full contraction.
• 10 to 405 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
405 pounds in five pound increments.

The Calves

• Ankle Plantar Flexion - The gastrocnemius and
the soleus are responsible for plantar flexion of the
ankle joint.
• Range of Motion - The ankle permits approxi-
mately 60 degrees of active motion. Much more
motion is often available during passive movement
under load. However, the range of motion during
exercise should be limited by the user's ability to
control the gastrocnemius and soleus concentrically
in plantar flexion and eccentrically in dorsiflexion.
• Associated Muscles - The planataris, peroneus
longus and brevis, tibialis posterior, and the flexors
of the toes assist with plantar flexion.
CYBEX VR2 Owner's Manual
MUSCLES TRAINED
Exercise
Page 3-21