Cybex FT-360S Functional Trainer Owner’s Manual
General Exercise
Guidelines
Page 3-7
Moment Arm - (MA) the shortest distance between the action line and the joint axis.
Momentum - determined by mass x velocity. Will remain constant unless the object is acted upon by
another force.
Muscle Contraction - shortening of a muscle and/or development of tension in a muscle.
Muscular Endurance - the ability of a muscle or muscle group to perform repeated contractions against
a light load for an extended period of time.
Neutral - a point between the two extremes of a joint’s range of motion.
Obesity - excess body fat.
Open Kinematic Chain - the ends of the limbs are free to move without causing motion at another
joint. Open chain motions are not predictable because the joints may function either independently
or in unison. Less mechanically effi cient, therefore more stress is placed upon muscular tissue.
Origin - attachment of a muscle that remains relatively fi xed during muscular contraction.
Overload - to exercise a muscle or muscle group against resistance greater than that which is normally
encountered. The resistance (load) can be maximal or near-maximal.
Passive Insuffi ciency - a two-joint muscle loses the ability to cross-bridge (generate force) due to full
lengthening over its greatest anatomical length due to force created in an opposing muscle.
Passive Stabilization - due to noncontractile components. Internal stabilization is created by connective
tissue (muscular support is not provided anatomically or physiologically) and external stabilization is
provided by a bench or brace.
Plane of Motion - a two-dimensional fl at surface running through an object. Motion occurs in the plane
or parallel to the plane.
Plantar - anatomical term referring to the sole or bottom.
Plantarfl exion - movement of the foot down in the sagittal plane; movement away from the leg.
Posterior - anatomical term meaning toward the back. Opposite of anterior.
Potential Energy - energy by virtue of position.
Power - the product of force and velocity. Work divided by time.
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