RELAXATION: A state of tranquility, rest or physical or mental rest.
ORIGIN: Place when the muscle begins
TENSION: Muscle force to generate movement or support a structure
GRAVITY LINE: It is a vertical line with respect to the center of gravity
VISCOELASTICITY: Ability of the muscle to regain its form at rest, after having performed an exercise of force that has modified it.
FORCE OF GRAVITY: Force of attraction that the Earth or other celestial body exerts on the bodies that are near or on is
ELASTICITY: It is the property of a material for recovering his initial form
SHEARING:Lateral deformation that is produced by an external force
STATIC POSITION: It does not move, changes or evolves
BODY SEGMENTS: Part of the body joining two joints
Excitability: Ability to respond to a stimulus, such as the nerves and muscles
MUSCLES: Muscles are tissues of the human body composed of muscle fiber, which contract during body movements
Angle: right angle: Measures 90 and its sides are always perpendicular to each other
MUSCLE CONTRACTION: Physiological process, Development for tension
SPEED: Magnitude that measures distance over time
MUSCLE CHAIN: circuit continuity management and planes through which spread the organizing body forces
