CYBEX VR2 Owner's And Service Manual page 23

Cybex VR2 Owner's Manual
Isometric (Static) Contraction - a muscular contraction in which tension is produced but
there is no change in the angle of the involved joint(s) involved.
Isotonic Contraction - a muscular contraction in which a constant resistance is moved
through a range of motion of the involved joint(s). Movement in this type of contraction typi-
cally involves both a concentric and an eccentric contraction.
Joint Play - "slack" in the connective tissues surrounding the joint that is required to allow
normal joint motion.
Kilocalorie - a unit of work or energy equal to the amount of heat required to raise the
temperature of 1 kg of water 1 degree C.
Kinematics - area of study that examines the spatial and temporal components of motion
(position, velocity and acceleration).
Kinesiology - The scientific study of human movement.
Kinetic energy - energy associated with motion.
Kinetics - area of study that examines the forces that act on a system.
Kyphosis - neutral/normal sagittal curvature of the thoracic spine. Excessive kyphosis is often
accompanied by rounded shoulders.
Lactic Acid (Lactate) - the temporary end-product of anaerobic glucose metabolism
(glycolysis).
Lean Body Mass - body weight minus body fat; composed of muscle, bone and other non-
fat tissue.
Lever - a rigid bar that rotates around a fixed support (fulcrum) in response to an applied
force.
Lever Systems - a force system existing whenever two or more parallel forces, whose
actions lines will never converge, act on the same object but at some distance from each
other. The three classifications are first, second and third class levers.
Ligament - a band of fibrous connective tissue that binds bone to bone; functions to maintain
integrity of a joint.
Lordosis - neutral/normal forward curvature of the lumbar and cervical spine.
Luxation - complete joint dislocation.
Mass - the amount of matter an object contains, or the number of atoms. Unlike weight, an
objects mass is constant, despite the value of gravitational acceleration. Mass is a determiner
of an object's inertia.
General
Exercise
Guidelines
Page 2-7