CYBEX Free Weight Owner's Service Manual page 45

Cybex Free Weight Owner's Manual
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.
Prime Mover - (agonist) a muscle that is mechanically optimal to produce a specifi c motion at a joint.
There can be more than one prime mover for a particular motion and a specifi c muscle can be a prime
mover for more than one motion at a joint.
Progressive Resistance - overloading a muscle or muscle group consistently throughout the duration
of a weight-resistance program.
Pronation - a triplanar motion at the subtalar joint consisting of abduction, depression and eversion,
resulting in lowering of the longitudinal arch of the foot. Position of the forearm with the palm facing down.
Protein - a basic foodstuff containing amino acids.
Proximal - towards the attached end of the limb or origin.
Range of Motion - the amount of motion available to a joint within the anatomical limits of the joint
structure. Can be classifi ed as Passive (movement produced via a force outside the limb), Active
(movement produced by muscles within the limb) or Resisted (movement challenged under additional
load). The amount of resistance will affect the range of motion with direct proportion.
Reciprocal Inhibition - contraction of agonist causes relaxation of antagonist.
Reliability - the extent to which an experiment, test or measuring procedure yields the same results on
repeated trials. Also known as reproducibility or repeatability.
Repetition Maximum (RM) - the maximum load that a muscle or muscle group can lift in a given number
of repetitions before fatiguing. For example, an eight-RM load is the maximum load that can be lifted
eight times.
Repositioners - muscles that lift the extremity and move it to a new location allowing the prime movers
to again accept load or propel.
Response - a sudden temporary adjustment in physiological function brought on by a single exposure
to exercise, e.g., the rise in heart rate associated with an exercise bout.
Rotary Motion - (radial or angular) the movement of an object around a fi xed axis in a curved path.
S.A.I.D. Principle - Specifi c Adaptation to Imposed Demand. A muscle will gain strength in the specifi c
ranges of motion and speeds in which it is trained.
Sagittal Plane - Imaginary line that divides the body, or any of its parts, into right and left sections.
General
Exercise
Guidelines
Page 3-7