Myofascial Release and DATES Flashcards
Stress
Force applied to deform a structure
normal stress is perpendicular
sheer stress is parallel
strain
change in shape due to stress (deformation)
stiffness
ratio of load to deformation/strain it causes (tight concept)
compliance
in opposite of stiffness (loose concept)
Creep
tendency of solid material to slowly move or deform permanently under the influence of long-term stress
Hysteresis
Energy lost when energy returned it is note equal to the original amount that was stored (residual strain)
Elastic material
amount of deformation is same for a given amount of stress material returns to original length when stress is removed
Visoelastic material
non linear
magnitude of stress applied is dependent on rate of loading
stored ME not completely returned once stress is removed
Force effects
Think wolff’s law (deformation occurs along lines of force)
Hooke’s law (strain placed on elastic is proportional to stress placed on it)
Newton (equal and opposite forces)
MFR mechanisms
Taking the affected structure to the balanced position relaxes the intrafusal muscle fibers of the spindles lying within the tight, contracted muscle mass.
The slow, steady return of the structure to the more neutral position allows a resetting of the gamma gain activity in the spindles of the muscle to a new, lower level.
Tight/Loose concepts
pain is typically at loose sites
–>suggest joint or soft tissue laxity
tight areas are tethered
Big bandage model
like tensegrity, fascial continuum to treat prox–>distal etc
the body is connected by deep fascial lines
Bioenergetic model
Mechanical tension creates bioelectric current changes that guide the orientation of fibrin and collagen.
Direct MFR
engage restrictive barrier
and the tissue is loaded with constant force until release occurs
Indirect MFR
dysfunctional tissues are guided along path of least resistance until free motion occurs
