Impairments: Voluntary Mvmt: Exam 1 Flashcards
Think about this!!!
Weakness
Dyscoordination
- related to which health cond, disorder or disease?
- related to which activity limitations?
When Dr. Cohen says “Coordination”
You say…..
Cerebellum!!!!!!!
*NOTE: also when he says “Dyscoordination” you say Cerebellum!!!
What is Weakness?
aka Asthenia
- Inability to gen. normal lvls of mm force
- aka Asthenia
Weakness leads to secondary changes in muscle
what are they?
Loss of type I and type II mm fibers
type I–slow twitch
type II–fast twitch
Weakness is a predictor of _____ ______ following stroke
Poor Outcome following stroke
Weakness may do 3 things:
- INC fall risk
- INC energy exp. during gait
- foster activity intolerance
Weakness
Fosters activity intolerance
leads to….
- Sedentary lifestyle
- DEconditioning
- Disuse atrophy
- DEC in ADL status
3 other problems that present as weakness:
- Bradykinesia
- Akinesia
- Apraxia
Bradykinesia or….
EXTREME slowness of mvmt
Akinesia or…
Inability to initiate mvmt
*getting the mvmt started
Apraxia or…
- inability to perform purposeful mvmts ALTHOUGH there are NO sensory or motor impairs.
-
PROBLEM W/ MOTOR PLANNING
- If challenged to do it—-> becomes more diff.
-
PROBLEM W/ MOTOR PLANNING
ex. Dr. Cohen’s pt who was sitting in chair and stood up, but when asked to “get up” —–could NOT do it
Limit to Strength Testing
Traditional strength testing
- Trad. strength testing assumes person being tested has normal motor control
- remember if it is NOT normal—–> DESCRIBE what you see
Limits of strength testing….
if the pt does not have normal motor control….
Standard mm tests are not valid!!!
Strengthening acts in people w/ CNS probs is STILL beneficial in 3 ways:
- Improves alpha-gamma coactivation
- uses neural pathways
- results in peripheral strength gains
Strengthening w/ CNS patho is still beneficial, but improvements in strength are NOT assoc’d w/ INC’d____________
NOT assoc’d w/ inc in mm tone
strengthening beneficial in CNS patho?
Strengthening programs appear to be effective in improving strength across dx groups
4 Interventions for Weakness
- PREs
- Isokinetics
- Biofeedback
- FES
Interventions for Weakness
Absence of active mvmt
0 or 1 on MMT scale
use….
- Facilitation techniques
- utilize stretch reflex path. for autogenic facilitation
- tapping, vibrating, lt. touch
- Modify functional task/environment
Autogenic Facilitation
0 or 1 MMT
Process of inhibiting the muscle that generated a stimulus (palpable contraction), while providing an excitatory impulse to the Antagonist muscle
Interventions for Weakness
Lack anti-gravity power
2 or 3 on MMT scale
- Use gravity eliminated pos’s
- begin PREs
- functional tasks
NOTE: remember w/ gravity eliminated put them in an alternative position and you support the limb during activity!!!
Interventions for Weakness
Lack full mm power
<4 on MMT scale
- Resistance
- PREs w/ wts
- manual resist. ex’s
- Consider body pos.
- use trunk and extremity mm power
- endurance
Strength training considerations and transfer effects?
- Exercise is:
- action-specific
- velocity-specific
- angle-specific
***transfer effects typ. not great**
Research: Transfer of Training
Weiss, A., et al (2000)
High intensity strength training improves strength and functional performance after stroke
Exercise training x12 wks
- Findings:
- mm strength gains
- rep’d chair stand times DEC’d
- stair climb time DEC’d (not sig.)
- 12% improve MAS
- 12% improve Berg
What does the research say:
High-int. strength training
CAN improve strength and balance
What does research say:
Task-oriented strength training
improves task performance and inc’s strength in the relevant mm’s
improves mm extensibility and stiffness
what does research say:
strength training and hypertonia
CAN have effect on reducing hypertonia in spastic muscles/mm groups
PNF or
Proprioceptive Neuromuscular Facilitation
PNF orig. developed for what?
combat weakness assoc’d w/ polio
Polio==LMN disorder
UE scapular and pelvic diagonal PNF patterns:
improve what?
- Specific mvmt patterns and tech’s to improve:
- Flexibility
- Strength
Principles of PNF:
Mass Mvmt
- Mass mvmt is characteristic of NORMAL motor activity
- brain knows only of mvmt
-
Mass mvmt req’s 2 things:
- tissue shortening
- tissue lengthening
Neurodevelopmental Treatment
NDT
Bobaths 1960s
challenges what?
- Challenges trunk mm’s and prox. mm stability
-
use of resistance NOT advocated
- causes abnorm. mm recruitment
-
use of resistance NOT advocated
- Has Functional relevance
Constraint Induced Mvmt or
CIM
aka
“Forced Use”
of the affected limb
Constraint Induced Mvmt: CIM
“Forced Use”
Taub and Wolf, 1990’s
- uses motor learning principles to INC active mvmt and function in UE
- restricts mvmt of unaffected side
Specific strengthening ideas?
Gen UE/LE weakness
- Gen. weakness—>
- multiple major mm groups
- multijoint mvmts
- BIG, COMPLEX mvmts
Specific strengthening ideas?
DF weakness
Hip flexor weakness
- address WHERE thes motions/mm’s will be NEEDED and treat THERE
- keep it functional
Probs w/ coordination arise from where?
- DCML
- Cb
- afferent and efferent tracts
DYScoordination is a problem w/ _______ and _______ of mvmt
Timing
Amplitude
*manifests in sev. ways
Ataxia or
Drunken sailor gait
Gen. term used to describe abnormal coordination
Ataxia
Ataxia
abnorm. coord.
demonstrated by deficits in…….
speed
amp. of displacement
directional accuracy
force of mvmt
Dysmetria or …
problem w/ distance
dys=problem
metria=distance
ex. putting pen cap onto pen
Dysmetria
over/undershooting
Inaccurate amp. and timing of mvmt
==> OVERshooting (hypermetria) OR
UNDERshooting (hypometria)
In Dysdiadochokinesia we NEED smooth reversal of agonist/antagonist
They LACK this
Dysdiadochokinesia
diff. performing something
Diff. performing rapid alternating mvmts
mvmts are clumsy, slow
- TESTS:
- sup/pro forearms fast
- DF/PF ankle fast
oscillatory mvmt due to alternating contractions of agonists and Antagonists
Tremors
Tremors
oscillatory mvmt due to alternating contractions of agonists and Antagonists
Intention or voluntary Tremor
occurs during movement of limb
absent @ rest
coordination problem
This tremor is ABSENT @ rest
coordination problem
Intention or voluntary tremor
Resting Tremor
Present @ rest
NOT typ assoc’d w/ dyscoordination
This tremor is PRESENT @ rest
NOT assoc’d w/ dyscoord.
Disappears w/ voluntary mvmt
Resting tremor
Resting tremor typ. assoc’d w/
Basal gang
higher brain centers
Examining Coord:
Finger to Nose test
- indiv tries to touch index finger of examiner w/ outstretched arm
- OBSERVE FOR:
- delay in mvmt initiation
- terminal tremor (appears when they get there)
- dysmetria (over/undershoot)
- NOTE: can be done in standing to ID diff w/ posture stabilization
Examining Dyscoord:
Heel to Shin Test aka
Frankel’s Test
- should be smooth
- Pt places heel of one leg on shin of other, near knee, slides heel down shin towards foot then reverse
Examining Dyscoord:
Rebound Test
Really checking for ….
“Lack of Check”
Examining Dyscoord:
Rebound Test:
- Isometric contraction resisted by examiner—-suddently releases opposing force
-
In an individual w/ cerebellar dysfunction:
- the mvmt of the limb continues unchecked (meaning that they don’t stop it once you let go), and the person moves the limb forcefully
Dysdiadochokinesia
rapid alternating mvmts
- testing rapidly alternating mvmts
- performed w/ forearm Pro/Sup, finger flex/ext, DF/PF ankle
Romberg Test aka…
Old-School balance test
Romberg Test set up
pt stands still w/ eyes open then closed
Romberg Test
Pts w/ Cerebellar Ataxia
Show an INC in observable body sway under eyes CLOSED condition
NOTE: Not a very specific test bc anyone w/ balance prob may have a positive finding
Interventions for Coordination
we want Smooooooth mvmts
CUE your pts w/ this!!!
“Nice and Smoooooooth”
Interventions for Impaired Coord.
Train when?
During functional mvmts
Intervents for impaired Coord.
Training during Functional mvmts:
- external constraints
- encourage smooooooth mvmts
- verbal cueing
- alter lvl of diff.
-
sustained force generation—isometrics
-
involve production of rapid initial burst of agonist activity
-
followed by sustained contraction
- quick stretch!!!
-
followed by sustained contraction
-
involve production of rapid initial burst of agonist activity
-
Open and closed tasks
- closed==> pt controls timing
Interventions for Impaired Coord.
Consider three things:
- support cond’s
- timing constraints
- environmental context
Interventions for Impaired Coordination:
Increasing Complexity
- w/draw external control and guidance
- do not guide them
- encourage inc amplitude of mvmt
- bigger!! Larger ROM
- add tasks which req. speed alterations, changes in amp, direction, force
- change directions, add more resist.
- INC balance req’s
- req. that complex mvmt stopped on command
Activities for Impaired Coord.
- targeting acts.
- targeted mvmts
- stairs
- darts
- ball into hoop (basketball)
- walking TM
- jump/plyo’s
- Weighting of UE/LEs
NOTE: Always consider FUNCTION!!!
PNF initially for…
polio
LMN disorder
*can be used for neuro/ortho deficits
PNF broken down
Proprioceptive–> regarding sensations of body pos. and mvmt
NMSK–> mm’s and nerves
Facilitation–> make easier, inc ease of performance of action or task
Functional mvmts accomplished w/ 2 things:
Mass mvmt patterns of:
- limbs
- trunk mm’s
PNF basics
Functional Mvmts
- mass mvmts
- all 3 planes
- balance b/w agonist, antagonist, synergist
PNF enhances: (5 things)
- stability
- mobility
- balance
- posture and/or coordination
What does the effect of PNF really depend on?
Verbal cues!! — what you say
manual contacts!! — how you touch them
Manual Contacts
Strength or Power
Proper manual contact does what?
INC strength of contraction
Can be on surface corresponding to desired direction mvmt (indirect)
OR
On skin OVER the mm in question (direct)
Manual Contacts
Direction of Mvmt:
Tactile cues
Very strong!!
*specific cueing elicits MORE approp. response
mult. contacts or poor placement facilitates mvmt in WRONG DIRECTION
In PNF
when it comes to resistance….
- use the “correct” amount
- this could just be assistance
-
literally having them “assist” w/ the mvmt
- “Ok now you do it WITH me”
-
literally having them “assist” w/ the mvmt
- this could just be assistance
In PNF…
Using the appropriate resistance elicits smooth contraction
Not too easy or too hard
results in:
- INC mm fiber recruitment
- INC kinesthetic awareness by INC force of contraction
Types of Contraction:
Consider the type you want!!!
Concentric:
- Commands
- “push” or “pull”
Types of Contraction:
Consider the type you want!!!
Eccentric:
- Kinesthetic awareness
- Commands:
- “Let go slowly”
- Commands:
Types of Contraction:
Consider the type you want!!!
Isometric
- Intention:
- maint. position against external resist.
- PT matches force gen’d by pt
-
Commands:
- “hold still”
- “don’t let me move you”
Types of Contraction:
Maintained or Stabilizing
*NOT an isometric, per se*
- using a contraction to “initiate” the mvmt
- start w/ concentric contraction in which PT allows only minimal motion FOLLOWED BY STOPPING MVMT (isometric)
Types of Contraction:
Maintained or Stabilizing
Used to facilitate what?
- facilitates stabilization
- treats deficits of strength or kinesthesia t/o ROM
Types of Contraction:
Maintained or Stabilizing
Commands:
- “Keep it there”
- “don’t let go”
so essentially… you will initiate the mvmt and bring them thru some kind of ROM….then at various points in the ROM you STOP the mvmt (isometric) and have them HOLD it in that one particular spot!!!
4 Neurophys. basis for PNF
- Irradiation
- Successive Induction
- Reciprocal Inhibition
- Autogenic Inhibition
PNF:
Irradiation
- spread mm response from one mm group to another by altering emphasis of resistance
PNF:
Successive Induction
- INC’d response of agonist AFTER contraction of its antagonist
PNF:
Reciprocal Inhibition
- facilitation of agonist results in simultaneous inhibition of antagonist
Contraction an agonist RELAXES its antagonist
ex. bridging— fires EXT’s, FLEX’s relax
PNF:
Autogenic Inhibition
- STRETCH ASPECT OF PNF
- Stimulation of GTO’s results in MM relaxation
- This is your PNF stretching that you know already!!!
Where can irradiation occur?
ipsi/contralat.
trunk to extremities
w/in same extremity
This can facilitate contraction in desired mm’s
Irradiation
PNF
If TOO MUCH resistance….
Irradiation can create
Undesired motions
Approximation:
- compresses jt. surfaces
- co-contraction around jts
- inc’s stability
Traction or distraction
- separation of jt. surfaces
- DEC pain
- facilitates MVMT
Verbal Commands
- simple
- concise
- audible
- SPECIFIC
Other cues/stimuli you can use….
- Visual
- eyes follow hands during UE mvmts
-
Timing for Emphasis
- tactile + verbal cues MUST be timed to elicit appr. response
2 Parts to ALL PNF Activities!!!
- Movement Pattern
- Exercise Technique
UE Diagonal Patterns:
D1
See pics
distinguish b/w Flexion and Extension

D1 Pattern
Shoulder
remember “Wonder Woman”
see pics

UE Diagonal Patterns
D2
see pics

D2 Pattern:
Shoulder
see pics
“think holding a tray out and up”

What are the D1 Components of the Scapula?
Scapular Anterior Elevation (Up and Forward)
Scapular Posterior Depression (Down and Back)
What are the D2 Components of Scapular motion?
Scapular Anterior Depression
Scapular Posterior Elevation
Scapular Patterns
In terms of a clock face —- meaning the DIRECTION OF THE MOTIONS
What is the clock/motion for Anterior Elevation-Posterior Depression
D1 scap. pattern
1:00 to 7:00
Scapular Patterns
In terms of a clock face —- meaning the DIRECTION OF THE MOTIONS
What is the clock/motion for Anterior Depression-Posterior Elevation
D2
11:00 to 5:00
Pelvic PNF Patterns
- Pelvic Anterior Elevation/Posterior Depression
-
1:00 to 7:00
- remember get in line w/ the motion!!!
-
1:00 to 7:00
- Pelvic Anterior Depression/Posterior Elevation
-
10:00 to 4:00
- get in line w/ the motion!!!
-
10:00 to 4:00
Scapular Patterns

Pelvic Patterns

PNF Activation Techniques
Rhythmic Initiation
- Passive–> Active assist–> Resistive
- You do it for them
- have them help you
- now resist them
PNF Activation Techniques
Combination of Isotonics
Concentric Eccentric, stabilizing contractions
PNF Activation techniques
Reversal of Antagonists
Isotonic Reversal
Alternating Concentric isotonic contractions
PNF techniques
Reversal of Antagonists
Stabilizing Reversals
Alternating Isometrics OR maintained isotonics
PNF Activation techniques
Reversal of Antagonists
Repeated Quick Stretch
Quick stretch–> contraction of agonist—> quick stretch–> repeat
Quick Stretch
The stimulus:
- quick elongation of a muscle to INC responsiveness
- synch’d w/ verbal cues and IMMEDIATELY FOLLOWED BY appropriate resist. w/ desired manual contact
Quick Stretch
The Response
- DOES NOT WORK ON FLACCID MUSCLE
- used to facilitate stronger muscle contraction
Do NOT use Quick Stretch if….
if painful!!!
NO BOUNCING!!!
PNF Stretching
Relax/Stretch Techniques
2 types
- Contract Relax
- Hold Relax
Relax/Stretch PNF
Contract Relax
- Contraction of agonist followed by PROM
Relax/Stretch PNF
Hold Relax
- Isometric OR Stabilizing contraction followed by PROM
BOTH relax/stretch PNF tech’s do what?
Inhibition to REDUCE mm tension in muscle
3 sensory systems @ play
- visual
- auditory
- proprio.
Visual Input
How is it helpful?
Cueing where pt LOOKS can help facilitate resp.
“Where the eyes go, the head goes, and where the head goes the trunk goes!”
Auditory Input
How is it helpful?
- tone and rhythm of your voice
- simple, precise, SPECIFIC
- preparatory command
- “annnddddddd…..pull down”
Proprioceptive Input
3 elements:
- tactile
- therapist position
- appropr. resistance
Tactile Input
consider pts pos. —–use gravity!!!
Lumbrical grip!!!
Tactile Input
Helpful tips…
- PT’s contact stim’s skin/pressure recepts to facilitate desired response
- WHAT YOU TOUCH IS WHAT YOU GET
- If you want FLEX….touch FLEXORS
-
hand place. should control and guide desired resp.
- IN LINE OF MVMT DESIRED
THERAPIST POSITION
IMPORTANT!!!
- pos. yourself to move w/in the diagonal pattern of mvmt
- use whole body
-
move so that pt can move w/ you
- “stay in the groove”
- prep and time mvmts to assist or resist
Therapist’s pos.
MORE TIPS
- @ either end of mvmt
- Shoulders and hips (ASISs) FACING THE DIRECTION OF MVMT
- Forearms should be pointed IN THE DIRECTION OF DESIRED MVMT
PRACTICE!!! YOU GOT THIS!!!
Therapist’s Pos.
Body Mechanics
- use WHOLE body to gen mvmts
- Your mvmt should be in the arc and line of mvmt YOU DESIRE FROM YOUR pt
- Resist. should come from your trunk/pelvis, NOT EXTREMITIES
Appropriate resistance
- smooth/coord’d effort t/o desired mvmt
- may also be assistance
- reinforces awareness of mvmt pattern
- achieves desired effect
Appropriate Resistance
Coordination:
LESS resistance, EMPHASIS on control
“nice and smooooooooth”
Appropriate Resistance
AROM
Resistance varies to allow ROM
work them thru ROM
Appropriate resistance
Strength
GRADUALLY inc resistance t/o ROM
Appropriate Resistance
Initiation
Gradually inc resistance @ beginning of ROM
force them to “fight” you to get the mvmt started
Appropriate Resistance
Stabilization
SLOWLY apply resistance until contraction is isometric
slowly resist them and once they have the pattern down the STOP and HOLD
Use variety of muscle contractions that are specific to the pt’s NEEDS
Mvmt vs. Stabilization
Concentric vs. Eccentric
“LET THE CASE GUIDE YOU!!!!”