PNF quiz Flashcards
PNF definition
system of exercise used to influence proprioceptors to influence motor output
purpose of PNF (and some buzz words) and what we are trying to tap into
increase functional carry over- restore spiral, reciprocal, dynamic diagonal movements
“tapping into pts untapped potential”
irradiation
def
how we use it
def: overflow
we use it by keeping resistance => other MU are recruited
successive induction def
once a contraction starts the next contraction or the reciprocal contraction are easier to recruit
agonist working => antagonist working better
reciprocal innervation/ inhibition def
during contraction, antagonist has to relax
4 types of muscle contractions and describe them
isotonic:
- concentric = shortening
- eccentric = lengthening
- maintained isotonic*= blocked isotonic tell the pt to keep pushing against resistance and when u remove resistance, movement occurs
isometric = stabilizing contraction, no change in length
9 basic techniques of PNF
- body position and body mechanics (of PT and pt)
- manual contacts
- appropriate resistance
- verbal commands
- stretch
- traction or approximation
- vision
- timing
- pattern
what does appropriate resistance do for us?
helps bring in muscle spindle
stretch helps 3 things…
must be accompanied by… to make it effective (2)
taps into…
- initiate movement
- redirect movement
- sustain movement*
must be accompanied by: verbal command (timing) followed by resisting the movement we want them to do
taps into monosynaptic myotatic reflex (alpha motorneuron)
when do we do traction vs. approximation?
what is their purpose?
traction: usually done during movement, helps increase movement
approximation: done before movement, done for stability
2 types of timing
and how we do them (3)
- normal
- timing for emphasis => maintained isotonic
block stronger movement to facilitate weaker components of a movement
block part of movement and continue other movement. irridation occurs
can be distal -> prox or prox -> distal
3 examples of how does vision help?
increases movement
increases wt shifting
increases trunk rotation
goal of special techniques
smooth and coordinated movement with normal postural control.
aka task specific training with optimal posture
rhythmic initiation
movement pattern (3)
purpose (4)
PROM -> AAROM -> appropriate resistance
purpose:
- evaluate arc of motion, tone and patients ability to complete arc
- give pt sense of movement
- relax pt
- muscle re-education => successive induction
isotonic reversals = dynamic reversals
movement pattern
purpose (5)
reciprocal pattern
isotonic contractions thru entire arc with appropriate resistance; can do maintained isotonic or isometric at any point in range
can use quick stretch as needed
purpose:
- facilitate coordinated, reciprocal movement
- improve smooth reversal of movement direction
- facilitate agonist/antagonist pairs
- prevent/relieve fatigue (increase endurance)
- increase AROM
combination of isotonics movement pattern
when do i do these?
purpose (2)
use eccentric, concentric and maintained isotonic in 1 direction of given diagonal
- maintained isotonic is used when there is a weakness in arc of movement, allows MU recruitment
- at strong part give resistance do these at various parts of movement for small arcs
purpose
- mimic ADL
- train pt to transition among types of contractions
when are maintained isotonics used?
why?
weak point in the range, this allows time for full MU recruitment
rhythmic stabilization = isometric reversals
characterization
goals (4)
indications (5)
characterization: resisting isometric contractions (dont let me move u)
goals:
- increase A & PROM
- increase strength
- increase stability & balance
- decrease pain
indications:
- limited ROM
- weakness in antagonist muscle group
- decreased balance
- pain when motion is attempted
- joint instability
rhythmic stabilization technique (5)
- resist isometric contraction of agonistic muscle group
- resistance increased as pt builds matching force
- when pt is fully responding, therapist moves hand and begins resisting antagonistic motion at distal part
- new resistance builds up slowly, then therapist goes to new antagonist resistance
- use traction and approximation as needed
