Flexibility. What is Joint Flexibility?. A description of the relative ROM allowed at a joint in different directions ROM: the angle through which a joint moves from anatomical position to the extreme limit of segment motion in a particular direction. Joint Flexibility .
A description of the relative ROM allowed at a joint in different directions
ROM: the angle through which a joint moves from anatomical position to the extreme limit of segment motion in a particular direction.
Range of motion is measured directionally from anatomical position (zero).
An indicator of the relative tightness or laxity of a joint.
the ROM present when a body segment is passively moved (by an exercise partner or clinician)
ROM achieved by virtue of muscle contraction
Shape and Tightness
The articulating bone surface, muscle tissue or fat terminate movement at extreme ROM.
Stretching increases extensibility of both tissues.
Lack of stretching significantly diminishes extensibility over time.
*Increased temperature increases flexibility of collagen.
Neuromuscular Response & Joint Flexibility
GTO Promotes RelaxationMuscle Spindles Inhibit stretch
maximizing GTO &
minimizing the muscle spindle
increases joint flexibility.
Active & Passive Stretching
Ballistic & Static Stretching
Produced by contraction of the antagonist muscles
Ex. Quadriceps contract so that hamstrings are stretched
Advantage: exercises muscle group used to develop force
Produced by a force other than tension in the antagonist muscles
Ex. Gravitational force, force applied by another body segment or by another person.
Advantage: movement can be carried out father beyond the ROM
Maintaining a slow, controlled, sustained stretch over time.
usually 20-30 seconds
Advantage: does not activate muscle spindle response that inhibits stretching
Series of quick, bouncing-type stretches.
The potential for injuries is heightened due to activation of muscle spindle which inhibits stretching
a group of stretching procedures involving alternating contraction and relaxation of the muscles being stretched